Answer:
MN = sqrt(34)
Step-by-step explanation:
First, draw the segment FN. The diagonal, MN, of the prism is the hypotenuse of triangle NFM. Triangle NFM is a right triangle with legs FN and FM and hypotenuse MN.
Leg FM of triangle NFM has length 4 cm.
We need to find the length of leg FN.
Look at the base of the prism which is square UNAF. FN is a diagonal of that square. Now think of right triangle FUN with legs UN and UF, each of length 3 cm. We can find FN with the Pythagorean theorem.
(UF)^2 + (UN)^2 = (FN)^2
3^2 + 3^2 = (FN)^2
(FN)^2 = 18
FN = sqrt(18)
Now we know FN. We use FN and FM as legs and find MN, the hypotenuse of triangle NFM.
(FN)^2 + (FM)^2 = (MN)^2
18 + 4^2 = (MN)^2
18 + 16 = (MN)^2
(MN)^2 = 34
MN = sqrt(34)
Iran of paper contains 500 sheets of paper. Norm has 373 sheets of paper left from a team. Express the option of a rem Norm has as a fraction and as a decimal
Answer:
373/500 = 0.746
Step-by-step explanation:
373 out of 500 is represented by the fraction 373/500.
This value is easily converted to a decimal number by multiplying numerator and denominator by 2:
(373×2)/(500×2) = 746/1000 = 0.746
_____
You can also divide 373 by 500 using a calculator to get the decimal result.
A real estate office manages an apartment complex with 50 units. When the rent is $780 per month, all 50 units are occupied. However, when the rent is $825, the average number of occupied units drops to 47. Assume that the relationship between the monthly rent p and the demand x is linear (Note:The term demand refers to thenumber of occupied units.)
(a) Write a linear equation giving the demand x in terms of the rent p. (b) Linear extrapolation - Use a graphing utility to graph the demand equation and use the trace feature to predict the
number of units occupied when the rent is raised to $855. (c) Linear interpolation - Predict the number of units occupied when the rent is lowered to $795.
Answer:
A) The linear equation is [tex]x=\frac{-1}{15}p+102[/tex]
B) When the rent is raised to $855 the number of units occupied is 45.
C) When the rent is lowered to $795 the number of units occupied is 49.
Step-by-step explanation:
A) A linear equation for the demand is written as [tex]x=mp+p_{0}[/tex], where [tex]m[/tex] is the slope, [tex]x[/tex] is the number of occupied units, [tex]p[/tex] is the rent.
[tex]m[/tex] is calculated using the problem information. When the rent is [tex]p=$780[/tex] then [tex]x=50[/tex] and when the rent is [tex]p=$825[/tex] then [tex]x=47[/tex].
Using the slope equation we have:
[tex]m=\frac{50-47}{780-825}=\frac{-3}{45}=\frac{-1}{15}[/tex]
Thus the linear equation is:
[tex]x=\frac{-1}{15}p+p_{0}[/tex]
In order to calculate [tex]p_{0}[/tex] we use the problem information, When the rent is [tex]p=$780[/tex] then number of occupied units is [tex]x=50[/tex], thus:
[tex]50=\frac{-1}{15}780+p_{0} \\\\50=-52+p_{0} \\\\p_{0}=102 \\[/tex]
Finally, the linear equation is:
[tex]x=\frac{-1}{15}p+102[/tex]
B) The demand equation is plot in the attached file, the number of units occupied when the rent is raised to $855 is 45.
C) In order to predict the number of occupied units lets use the equation:
[tex]x=\frac{-1}{15}p+102[/tex]
where [tex]p=$795[/tex], then:
[tex]x=\frac{-1}{15}795+102\\ \\x=-53+102\\\\x=49[/tex]
Thus, when the rent is lowered to $795 the number of units occupied is 49.
A shrew, the mammal with the fastest metabolism, has a mass of only 0.004 kg. What is its mass in grams? A. 0.4 g B. 0.04 g C. 4 g D. 0.000004 g
Answer:
C
Step-by-step explanation:1 kilogram = 1000 grams so if you multiply 0.004 times 1000 you get 4 grams
To make a greeting card, Bryce used 1/8 sheet of red paper, 3/8 sheet of green paper, and 7/8 sheet of white paper. How many sheets of paper did Bryce use?
HELP ASAP! Algebra II Questions!!
Answer:
The answer to your question is: the last option 5a² + 3b + 6a
Step-by-step explanation:
7a² + 3b + 6a - 2a²
look for like terms
7a² - 2a² 3b 6a
Simplify like terms
5a² + 3b + 6a
A health clinic uses a solution of bleach to sterilize petri dishes in which cultures are grown. The sterilization tank contains 120 gal of a solution of 4% ordinary household bleach mixed with pure distilled water. New research indicates that the concentration of bleach should be 6% for complete sterilization. How much of the solution should be drained and replaced with bleach to increase the bleach content to the recommended level?
Answer:
2.5 gal
Step-by-step explanation:
let be x = galons of solution to be drained and replace with bleach
so, we have to substract to the current solution of bleach 0.04*120, x gallons that have a concentration of 0.04 x
and also, we have to add the same gallons of bleach to the solution, that is x
and have to obtain a final concentration of 0.06*120
we can express the problem with the follow equation:
0.04*120 - 0.04*x + x = 0.06*120
solving the equation for x:
4.8+0.96*x=7.2
0.96*x=7.2-4.8
0.96*x=2.4
x =2.5 gallons
A spyware is trying to break into a system by guessing its password. It does not give up until it tries 1 million different passwords. What is the probability that it will guess the password and break in if by rules, the password must consist of
(a) 6 different lower-case letters
(b) 6 different letters, some may be upper-case, and it is case-sensitive
(c) any 6 letters, upper- or lower-case, and it is case-sensitive
(d) any 6 characters including letters and digits
The probability of a spyware program breaking into a system depends on the complexity of the password rules. By calculating the total number of possible passwords based on given rules and comparing it to the number of guessing attempts (1,000,000), one can determine the probability for each scenario.
Explanation:The probability of a spyware program guessing a password correctly can be calculated by determining the total number of possible unique passwords and then seeing how many attempts the spyware has in comparison.
6 different lower-case letters: There are 26 possibilities for each character, and because the letters must be different, the total number of possibilities is 26 * 25 * 24 * 23 * 22 * 21. Since the spyware makes 1 million (1,000,000) attempts, the probability of guessing correctly is 1,000,000 / (26 * 25 * 24 * 23 * 22 * 21).6 different letters, case-sensitive: There are 52 possibilities for each character (26 lower-case + 26 upper-case), and since letters must be different, the total number of possibilities is 52 * 51 * 50 * 49 * 48 * 47. So the probability is 1,000,000 / (52 * 51 * 50 * 49 * 48 * 47).Case-sensitive combination of letters: Since letters can be the same and are case-sensitive, there are 52 possibilities for each character, for a total of 52^6 possible combinations. The probability is 1,000,000 / 52^6.Any 6 characters including letters and digits: There are 62 possibilities for each position (26 lower-case + 26 upper-case + 10 digits), giving us 62^6 possible combinations. The probability is 1,000,000 / 62^6.In all cases, the probability of the spyware breaking in is the quotient of the number of attempts made (1,000,000) and the total number of possible passwords for each scenario.
Statistics is defined as a body of techniques used to facilitate the collection, organization, presentation, analysis, and interpretation of information for the purpose of making better decisionsa) trueb) flase
Answer:
The given statement is true.
Step-by-step explanation:
Statistics is defined as a body of techniques used to facilitate the collection, organization, presentation, analysis, and interpretation of information for the purpose of making better decisions : TRUE statement.
Statistics helps the people to use limited sample to make accurate conclusions about a greater population. In stats we use tables, charts and graphs to present the data to draw some conclusions.
To determine her power usage, Keri divides up her day into three parts: morning, afternoon, and evening. She then measures her power usage at 4 randomly selected times during each part of the day. What type of sampling did she use?
Answer:
Stratified Sampling
Step-by-step explanation:
Since Keri divides the day into different strata and each unit is selected from each strata randomly. So, it is Stratified Sampling.
Further, In Stratified Sampling population is divided into several groups such that within the group it is homogeneous and between the group it is heterogeneous. And now a selection of each stratum and unit has an equal chance of selection.
Two vectors A and B are added together to form a vector C. The relationship between the magnitudes of the vectors is given by a2 + b2 > c2. Which one of the following statements concerning these vectors is true?
The angle between the two vectors must be an obtuse angle, i.e, greater than 90 The two vectors must point in opposite directions
The two vectors must point in opposite directions
The two vectors must be parallel.
The angle between the two vectors must be an acute angle, l-e, less than 900.
Answer:
D.The angle between the two vectors must be an acute angle which is less than 90 degrees.
Step-by-step explanation:
We are given that two vectors A and B are added together to form a vector C.
The relationship between the magnitudes of the vectors is given by [tex]a^2+b^2 >c^2[/tex]
We have to find which statement is true about given vectors.
We know that if a triangle is an obtuse triangle then
[tex]c^2 >a^2+b^2[/tex]
If a triangle is an acute triangle then
[tex]a^2+b^2 >c^2[/tex]
If a triangle is right angle triangle then
[tex]c^2=a^2+b^2[/tex]
Therefore,the angle between the two vectors must be an acute angle which is less than 90 degrees.
Option D is true.
Please help me out with this
Answer:
y = - 3x + 4
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (2, - 2) ← 2 points on the line
m = [tex]\frac{-2-4}{2-0}[/tex] = [tex]\frac{-6}{2}[/tex] = - 3
Note the line crosses the y- axis at (0, 4) ⇒ c = 4
y = - 3x + 4 ← equation of line
The equation A=p(1+r)^t can be used to calculate compound interest on a savings account. A = future balance, p = current balance, r = rate of interest, and t = time in years. If you deposit $2,000 at 10% each year, how much money will be in your account in 10 years(Round to the nearest dollar.)
A.
$2,200
B.
$4,000
C.
$4,318
D.
$5,187
To calculate the compound interest, the formula[tex]A=p(1+r)^t[/tex] is used with the principal amount of $2,000, an annual interest rate of 10%, and a time frame of 10 years. The correct calculation results in a future balance of $5,187, when rounded to the nearest dollar. The correct option is d.
The equation [tex]A=p(1+r)^t[/tex] is used to calculate the compound interest on a savings account. To find out how much money will be in the account after a certain number of years, we can follow these steps:
Identify the principal amount (p), which is the initial amount deposited. In this case, it's $2,000.Determine the annual interest rate (r), expressed as a decimal. For a 10% interest rate, r would be 0.10.Identify the time (t) in years that the money will be invested. Here, it is 10 years.Substitute these values into the formula: [tex]A = 2000(1 + 0.10)^{10[/tex]Calculate the future balance A.After performing the calculation, we get:
A =[tex]2000(1 + 0.10)^{10[/tex] = [tex]2000(1.10)^{10[/tex] = 2000 ×2.59374 = $5,187.48
Therefore, rounded to the nearest dollar, you will have $5,187 in your account after 10 years. The correct answer is D. $5,187.
A survey was given to 259 people asking where the people like dogs and or cats 186 people said they like dogs 105 people say they like cats 58 said they don't like dogs or cats how many said they like both
Answer:
90
Step-by-step explanation:
There are several ways you can go at this, but the basic idea is that "likes dogs" includes "likes both", as does "likes cats."
That means ...
(likes dogs) + (likes cats) + (likes neither)
= (likes dogs only + likes both) + (likes cats only + likes both) + (likes neither)
= [likes dogs only +likes cats only +likes both +likes neither] + (likes both)
= [total] + (likes both)
In numbers, ...
186 + 105 + 58 = 259 + (likes both)
90 = likes both . . . . . . subtract 259
At a hotdog stand they serve regular and foot-long hotdogs are the ratio of 3 to 2 based on this ratio how many foot-long hotdogs will be served if there are a total of 80 hotdogs served
To calculate the number of foot-long hot dogs served, divide the total number of hot dogs by the total parts of the ratio (80/5 = 16) and then multiply by the number of parts for foot-long hot dogs (2 * 16 = 32 foot-long hot dogs served).
If the ratio of regular hot dogs to foot-long hot dogs at a hot dog stand is 3 to 2, and there are a total of 80 hot dogs served, we can calculate the number of foot-long hot dogs served using proportional reasoning.
To find out how many foot-long hot dogs are served, first add up the parts of the ratio: 3 parts regular hot dogs + 2 parts foot-long hot dogs = 5 parts total. Since there are 80 hot dogs served in total, we divide this number by the total number of parts to find the value of one part.
80 hot dogs \/ 5 parts = 16 hot dogs per part.
Now, multiply the value of one part by the number of parts for foot-long hot dogs to get the total number of foot-long hot dogs served:
2 parts foot-long hot dogs x 16 hot dogs per part = 32 foot-long hot dogs.
You are a bus driver and are scheduled to depart from Terminal A at 9:18 a.M. And arrive at Terminal B at 10:03 a.M. You arrive at a stop on your route at 9:58 a.M., and you have 5 more stops remaining, including your arrival at Terminal B. Average travel time between stops is 2 minutes, and loading and unloading takes an average of 1 minute. How many minutes past your scheduled arrival time should you expect to arrive at Terminal B?
You should expect to arrive at Terminal B approximately 17 minutes past the scheduled arrival time, factoring in remaining stops and travel times.
Let's calculate the expected delay in arrival at Terminal B.
Given:
- Scheduled departure from Terminal A: 9:18 a.m.
- Scheduled arrival at Terminal B: 10:03 a.m.
- Arrival at a stop on the route at 9:58 a.m.
- 5 more stops remaining, including the arrival at Terminal B.
- Average travel time between stops: 2 minutes
- Loading and unloading time: 1 minute
1. Total travel time from the current stop to Terminal B:
[tex]\[ 10:03 \text{ a.m.} - 9:58 \text{ a.m.} = 5 \text{ minutes} \][/tex]
2. Remaining stops:
[tex]\[ 5 \text{ stops} \times (2 \text{ minutes travel time} + 1 \text{ minute loading/unloading}) = 5 \text{ stops} \times 3 \text{ minutes per stop} = 15 \text{ minutes} \][/tex]
3. Total time from the current stop to Terminal B, including remaining stops:
[tex]\[ 5 \text{ minutes (travel time to Terminal B)} + 15 \text{ minutes (remaining stops)} = 20 \text{ minutes} \][/tex]
4. Determine how many minutes past the scheduled arrival time at Terminal B this would be:
[tex]\[ 20 \text{ minutes} - (10:03 \text{ a.m.} - 10:00 \text{ a.m.}) = 20 \text{ minutes} - 3 \text{ minutes} = 17 \text{ minutes} \][/tex]
Therefore, you should expect to arrive at Terminal B 17 minutes past the scheduled arrival time.
If the correct answer is indeed 10 minutes, then there might be a misunderstanding or a mistake in the problem statement.
You can expect to arrive at Terminal B approximately 10 minutes past your scheduled arrival time. This is calculated based on the average travel time and loading/unloading time for the remaining stops.
To determine how many minutes past your scheduled arrival time you should expect to arrive at Terminal B, let's break down the time required for the remaining stops.
You arrive at a stop on your route at 9:58 AM. You have 5 more stops remaining, including Terminal B.Average travel time between stops is 2 minutes, and loading and unloading takes 1 minute. Therefore, each stop takes 3 minutes on average (2 minutes travel + 1 minute loading/unloading).For 5 stops, the total time required will be 3 minutes per stop × 5 stops = 15 minutes.If you start this 15-minute period at 9:58 AM, the calculation is: 9:58 AM + 15 minutes = 10:13 AM.Your scheduled arrival at Terminal B is 10:03 AM.The delay is then 10:13 AM minus 10:03 AM, which results in a 10-minute delay.Therefore, you should expect to arrive at Terminal B approximately 10 minutes past your scheduled arrival time.
What is the measure of angle BAC?
ABCD is a square
30
45
60
90
Answer:
B:45 degrees.
Step-by-step explanation:
We are given that a square ABCD .
We have to find the measure of angle BAC.
We know that each angle of square is of 90 degrees.
We know that diagonal AC bisect the angle BAD.
Therefore, measure of angle BAC=Measure of angle CAD.
Measure of angle BAD=[tex]\frac{1}{2}\times 90=45^{\circ}[/tex]
Hence, the measure of angle BAC=45 degrees.
Answer:B:45 degrees.
Answer:
45
Step-by-step explanation:
Five friends a matinee movie spend $8 per ticket.They also purchase a small bag of popcorn each.If the friends pend a total of $62.50,how much does each bag of popcorn cost?
Five friends went to see a movie. Each person paid $5.
This is a total of $40.
$62.50 - $40 = $22.50.
We now have $22.50 to divide by 5 people.
So, $22.50/5 = $4.50.
Each person paid $4.50 for popcorn.
How many oranges are in a crate if the price of a crate of oranges is $1.60 and the price of oranges is $0.20 per pound and there are 3 oranges per pound?
The crate contains 24 oranges.
What is unitary method ?Unitary method is a mathematical technique for first finding the value of a single unit and then deriving the given units from it by multiplying with the single unit.
According to the given question a no. of oranges are in a crate which costs 1.60 dollars also given that per pound of orange costs 0.20 dollars.
∴ The crate contains (1.60/0.20) pounds of oranges which is
= 8 pounds of oranges.
Given 3 oranges are of 1 pound
∴ In 8 pounds of oranges pieces of oranges are (8×3) = 24 oranges.
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A researcher conducts a repeated-measures study to evaluate a treatment with a sample of n = 16 participants and obtains a t statistic of t = 1.94. The treatment is expected to increase scores and the sample mean shows an increase. What is the correct decision for a hypothesis test using α = .05?
Given : Sample size : n= 16
Degree of freedom = n-1=15
The obtained t-statistic value = 1.94
Since, The treatment is expected to increase scores and the sample mean shows an increase.
Let [tex]\mu_0[/tex] be the population mean before and [tex]\mu[/tex] denotes the population mean after the treatment.
then the related hypothesis will be :-
[tex]\text{Null hypothesis }H_0:\mu_0=\mu\\\\\text{Alternative hypothesis } H_1:\mu_0<\mu[/tex]
Since the alternative hypothesis is left-tailed, so the test is a left tailed test.
The critical value for [tex]\alpha=0.05[/tex]=1.753
Since, the obtained value (1.94) is greater than the critical value (1.753) so we reject the null hypothesis .
Therefore, we have enough evidence to support the alternative hypothesis.
Hence, we conclude that treatment may successful to increase scores and the sample mean shows an increase.
Slope and y intercept
Answer:
can you elaborate
Step-by-step explanation:
I think you're talking about the slope formula so I'll tell you that y=x+b
y2-y1/x2-x1 (x1,y1) is the first coordinate and (x2,y2) is the second coordinate
Answer:
Step-by-step explanation:
1 ) the slope formula for the line passes by : A(XA,YA) B(XB,YB)
the slope is : (YB - YA)/(XB -XA)
2) y intercept for the line when : x = 0
A checking account has the following balances:
1. Check register balance of $459.70
2. Bank statement balance of $562.43
3. Two outstanding checks of $76.40 and $29.83
4. Service charge of $3.50.
What is the true balance?
Answer:
The true balance is $562.43
Step-by-step explanation:
1. Check register balance of $459.70
2. Bank statement balance of $562.43
3. Two outstanding checks of $76.40 and $29.83
4. Service charge of $3.50.
The working is shown like -
Subtract the service charge from check register balance
[tex]459.70-3.50=456.20[/tex] dollars
Then add the outstanding checks to this
[tex]456.20+76.40+29.83=562.43[/tex] dollars
Hence, the true balance is $562.43.
Answer:
THIS ANSWER IS CORRECT!!
Step-by-step explanation:
What is the true balance?
$456.20
You have the Check registar balance which includes your outstanding checks. You minus the $3.50 fee to get the true balance.
Mrs. Drew wants to build a square sandbox with an area of 400 square feet. What is the total length of wood Mrs. Drew needs to make the sides of the sandbox?
Answer:
80 ft
Step-by-step explanation:
The area can be used to find the side length. The perimeter is the sum of side lengths.
A = s² . . . . . the area of a square is the square of its side length
s = √A . . . . the side length is the square root of the area
s = √(400 ft²) = 20 ft
The perimeter is the sum of the four equal-length sides of the square, so is ...
P = 4s
P = 4(20 ft) = 80 ft
Mrs. Drew needs 80 ft of wood to make the sides of the sandbox.
Final answer:
To build a square sandbox with an area of 400 square feet, each side of the sandbox is 20 feet long, and Mrs. Drew will need a total of 80 feet of wood to construct the sides.
Explanation:
Finding the Total Length of Wood for a Sandbox
The question asks us to determine the total length of wood necessary to build a square sandbox with an area of 400 square feet. To find the length of one side of the sandbox, we take the square root of the area. The square root of 400 square feet is 20 feet, which means each side of the sandbox is 20 feet long. Since the sandbox is square, it has four equal sides.
The total length of wood Mrs. Drew needs for the sandbox is the sum of the lengths of all four sides:
20 feet + 20 feet + 20 feet + 20 feet = 80 feet.
Therefore, Mrs. Drew will require 80 feet of wood to construct the sides of the sandbox.
It's helpful to remember when working with square areas that the perimeter (or total length around the square) is always four times a single side. This is a key concept in geometry and is useful in practical applications such as planning the construction of a sandbox.
Owen went to the grocery store and purchased cans of soup and frozen dinners. Each can of soup has 500 mg of sodium and each frozen dinner has 650 mg of sodium. Owen purchased a total of 19 cans of soup and frozen dinners which collectively contain 11000 mg of sodium. Determine the number of cans of soup purchased and the number of frozen dinners purchased.
Answer: 2 with the remainder of 200
Step-by-step explanation:
first you are going to times 19 cans by 500 mg of sodium and get 9,500
then you are going to subtract 11,000 by 9,500 and get 1,500
lastly you are going to take 1,500 and divide it by 650.
in the end you will get 2 with the remainder of 200.
Answer:
Owen bought [tex]9[/tex] cans of soup and [tex]10[/tex] cans of frozen dinners.
Step-by-step explanation:
We can solve this problem by writing the linear equation system that represents the situation.
Let be ''x'' the number of cans of soup purchased and ''y'' the number of frozen dinners purchased.
By reading the question we can write the following linear equation system :
[tex]x+y=19[/tex] (I)
[tex]x.(500)+y.(650)=11000[/tex] (II)
Working with the equation (I) we find that [tex]x=19-y[/tex] (III)
If we replace (III) in (II) :
[tex](19-y).(500)+y.(650)=11000[/tex]
[tex]9500-500y+650y=11000[/tex]
[tex]150y=1500[/tex]
[tex]y=10[/tex]
We find that Owen bought [tex]10[/tex] cans of frozen dinners.
If we replace the value of ''y'' in (I) :
[tex]x+10=19[/tex]
[tex]x=9[/tex]
We find that Owen bought [tex]9[/tex] cans of soup.
The heights of the adults in one town have a bell-shaped distribution with a mean of 67.5 inches and a standard deviation of 3.4 inches. Based on the empirical rule, what should you predict about the percentage of adults in the town whose heights are between 57.3 and 77.7 inches?
Answer:
The percentage is approximately 99.7%
Step-by-step explanation:
In order to understand this question you must understand the bell curve. (I would suggest googling a picture of the bell curve)
The mean of the bell curve is 67.5, meaning +1 standard deviation would be 70.9 (67.5+3.4). This would mean that 34% of the sample is between 67.5" and 70.9" (The bell curve % goes 34/14/2/.1 in that order)
When looking at the bell curve of this data, you would find that ±3 standard deviations gives you the range of 57.3" to 77.7". This would represent roughly (2+14+34+34+14+2)% of the sample. This excludes the .2% that are above or below 57.3" to 77.7". Therefore, the only answer that is close would be 99.7%
Using the empirical rule for a normal distribution, the calculation shows that approximately 99.7% of adults in town have heights between 57.3 and 77.7 inches.
Explanation:The heights of the adults in this town follow a bell-shaped distribution known as the normal distribution. This means that the values are symmetrically distributed around the mean, with most values close to the mean and fewer values farther away. The empirical rule states that approximately 68 percent of the data falls within one standard deviation of the mean, about 95 percent falls within two standard deviations, and about 99.7 percent falls within three standard deviations.
In this case, the mean is 67.5 inches and the standard deviation is 3.4 inches. Thus, one standard deviation away from the mean is a range from 67.5 - 3.4 = 64.1 inches to 67.5 + 3.4 = 70.9 inches. Two standard deviations away from the mean is a range from 64.1 - 3.4 = 60.7 inches to 70.9 + 3.4 = 74.3 inches. Three standard deviations away from the mean is a range from 60.7 - 3.4 = 57.3 inches to 74.3 + 3.4 = 77.7 inches.
Therefore, according to the empirical rule, we would predict that about 99.7 percent of adults in the town have heights between 57.3 and 77.7 inches.
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A newborn calf weighs about 90 pounds. Each week, it's weight increases by 5%. a) If we were to graph this growth, would it be a linear or exponential function? b) How do you know? Support your answer.
Answer: exponential because it's a ratio :)
Step-by-step explanation:
Answer:
Exponential. Because of its cumulative nature (gain of weight) and its growth rate (5%).
Step-by-step explanation:
It's a growth graph given by an exponential function because every gain of weight is cumulative to the earlier week's. This function can be modeled this way since the rate of growth (5%) was given, which is added by 1 then plugged into the formula. [tex]y=90(1.05)^{t}[/tex] Besides, this model is identical to Interest Composite Rate, which follows the same basic structure, namely Cumulative Growth at a given rate.
Bao was given $\$1,\!000$ for his birthday. He decided to invest the money in a bank account that earns $10\%$ interest, compounded annually. In dollars, how much total interest will Bao have earned 3 years later?
Bao's initial investment is $1,000, the annual interest rate is 10% or 0.10, and the interest is compounded annually. Plugging in these values into the formula, Bao will earn a total interest of $331 after 3 years.
Explanation:To calculate the total interest Bao will have earned after 3 years, we can use the formula for compound interest: [tex]A = P(1+r/n)^(nt)[/tex] where A is the final amount, P is the principal amount (initial investment), r is the annual interest rate (as a decimal), n is the number of times interest is compounded per year, and t is the number of years.
In this case, Bao's initial investment (P) is $1,000, the annual interest rate (r) is 10% or 0.10, and the interest is compounded annually (n = 1). We need to find the final amount (A) after 3 years (t = 3).
Plugging in these values into the formula:
[tex]A = 1000(1+0.10/1)^3[/tex]
= $1,331.
Therefore, Bao will earn a total interest of $331 after 3 years.
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Final answer:
Bao will have earned $331 in total interest after 3 years by investing his $1,000 at an annual compound interest rate of 10%.
Explanation:
The student's question involves calculating the amount of interest earned from a compound interest formula over a period of 3 years. To determine the total interest earned by Bao after 3 years, we need to apply the compound interest formula:
[tex]A = P (1 + r/n)^{nt}[/tex]
Where:
A is the amount of money accumulated after n years, including interest.
P is the principal amount (the original sum of money).
r is the annual interest rate (decimal).
n is the number of times that interest is compounded per year.
t is the time the money is invested for, in years.
For Bao's investment:
P = $1,000
r = 10% or 0.10
n = 1 (since interest is compounded annually)
t = 3 years
Using the formula:
[tex]A = 1000 (1 + 0.10/1)^{(1*3)} = 1000 (1.10)^3 = 1000 * 1.331 = $1,331[/tex]
The total interest earned after 3 years is:
Interest = A - P = $1,331 - $1,000 = $331
So, Bao will have earned $331 in total interest 3 years later.
Write a complete two-column proof for the following information.
Given: AB = 3y - 1, BC = 7y, AC = 29
Prove: AB = 8
Answer:
The answer to your question is below
Step-by-step explanation:
Data
AB = 3y - 1
BC = 7y
AC = 29
Prove AB = 8
AB + BC = AC
3y - 1 + 7y = 29
10y -1 = 29
10y = 29 + 1
10y = 30
y = 30/10
y = 3
AB = 3y - 1
= 3(3) - 1
= 9 - 1
= 8
The distance from Los Angeles to Mumbai is 14,000 km. Flights take 22
hours, whilst the return flight from Mumbai to Los Angeles takes only 17
hours because of the direction of the prevailing wind. Assuming the
airplane would fly the same speed in both directions in still air, what is
the average wind velocity?
Answer:
about 93.6 km/h
Step-by-step explanation:
The speed westbound is ...
14000 km/(22 h) ≈ 636.364 km/h
The speed eastbound is ...
14000 km/(17 h) ≈ 823.529 km/h
The difference in speeds is twice the wind speed, so the wind speed is ...
(823.529 -636.364)/2 km/h ≈ 93.6 km/h
To find the wind velocity, first calculate the plane's average speed in still air by averaging its speeds in opposite directions. Then subtract the plane's speed against the wind from its speed in still air. The result is the wind velocity, which in this case is 93.59 km/h.
Explanation:To calculate the wind velocity, we will first need to find out the airplane's speed in still air. This can be calculated by getting the average of the two speeds in opposite directions. You see, when a plane flies from Los Angeles to Mumbai, it takes 22 hours, while the return flight from Mumbai to Los Angeles takes only 17 hours because of wind assistance. Here's how to work it out:
First, calculate the plane’s speed for both directions: For the LA to Mumbai direction it’s 14,000 km / 22 hours = 636.36 km/h, and for the Mumbai to LA direction it’s 14,000 km / 17 hours = 823.53 km/h.Now, get the average speed of the plane in still air. It would be the sum of these two speeds divided by two: (636.36 km/h + 823.53 km/h) / 2 = 729.95 km/h. This is the plane’s speed in an environment without wind.To find the wind velocity, subtract the plane's speed against the wind (LA to Mumbai direction) from the speed in still air. This gives us: 729.95 km/h - 636.36 km/h = 93.59 km/h. Therefore, the average wind velocity is 93.59 km/h.Learn more about Wind Velocity here:https://brainly.com/question/34068902
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Study the following distribution chart
Answer:
40 and 70
Step-by-step explanation:
The mode is the most occurring value in a data set. In this data set, the mode is 40 and 70 because
Alex has 360 yards of fencing to enclose a rectangular area. Find the dimensions of the rectangle that maximize the enclosed area. What is the maximum area?
Answer:
90 yd by 90 yd (square)8100 yd²Step-by-step explanation:
When the perimeter of the rectangle is 360 yd, the sum of the lengths of two adjacent sides is 180 yd. If x is the length of one side of the rectangle, then the adjacent side is (180-x). The area is the product of these lengths,
area = x(180 -x)
This describes a downward-opening parabola with zeros at x=0 and x=180. The vertex (maximum) of the parabola is halfway between, at x=90. The adjacent sides of the maximum-area rectangle are the same length: the rectangle is a square with sides 90 yards each.
The area is (90 yd)² = 8100 yd².
The maximum area is achieved when Alex uses the fencing to create a square. Dividing 360 yards by 4 gives each side a length of 90 yards. Thus, the maximum area that can be enclosed is 8100 square yards.
Explanation:Alex is attempting to maximize the area of a rectangular enclosure by manipulating the length and width dimensions. In this circumstance, the maximum area will be achieved when the rectangle is square. This is because for a fixed perimeter, in this case 360 yards, a square provides the largest possible area.
The rectangle will be square if all its sides are equal. Hence, to find the dimensions of the rectangle, divide the total length of the fencing by 4 (as a square has 4 equal sides), i.e., 360 yards/4 = 90 yards. Thus, the rectangle's dimensions will be 90 yards by 90 yards.
To find the maximum area, multiply the length by the width, i.e., 90 yards * 90 yards = 8100 square yards. Therefore, the maximum area that can be enclosed by the fencing is 8100 square yards.
Learn more about Maximizing Area here:https://brainly.com/question/34713449
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