Answer: -57
Step-by-step explanation:
The difference between the expression is [tex]\rm -10x^2-7x+1[/tex].
What is subtraction?Subtraction is one of the four basic arithmetic operations that is used to find the difference.
Subtract – 2x2 + 3x – 9 from 8x2 + 10x – 10.
The difference between the expression is determined in the following steps given below.
[tex]\rm = -2x^2+3x-9-(8x^2+10x-10)\\\\= -2x^2+3x-9-8x^2-10x+10\\\\= -10x^2-7x+1[/tex]
Hence, the difference between the expression is [tex]\rm -10x^2-7x+1[/tex].
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What is the value of (5.3 times 10 Superscript 4 Baseline) (4.2 times 10 Superscript 3) in scientific notation?
Answer:
[tex]2.226X 10^8[/tex]
Step-by-step explanation:
We are to determine the value of [tex](5.3 X 10^4) (4.2 X 10 ^ 3)[/tex] in scientific notation.
Given:
[tex](5.3 X 10^4) (4.2 X 10 ^ 3)[/tex]
STEP 1: Remove the brackets.
[tex](5.3 X 10^4) (4.2 X 10 ^ 3)=5.3 X 10^4X4.2 X 10 ^ 3[/tex]
STEP 2: Separate the numbers and index of 10.
[tex]=5.3 X4.2X 10^4 X 10 ^ 3[/tex]
STEP 3: Multiply the Numbers and Index of 10
[tex]=22.26X 10^{4+3}[/tex]
STEP 4: Simplify and write in Scientific notation
[tex]22.26=2.226X10\\Therefore:\\22.26X 10^{4+3}=2.226X10X 10^{4+3}=2.226X10X 10^7=2.226X 10^8[/tex]
Thus:
[tex](5.3 X 10^4) (4.2 X 10 ^ 3)=2.226X 10^8[/tex] in scientific notation
Answer:
C.) 2.226 times 10^8
Step-by-step explanation:
5.3* 10^4 * 4.2 * 10^3
5.3* 4.2 =22.26
10^(4+3) = 10^7
22.26*10^7
2.226 * 10 ^(7+1)
=2.226*10^8
What is the equation of this line
Answer:
y= -2/3x - 2
Step-by-step explanation:
You can draw a triangle base on the line, y= -2, x =-6/2 --> x=-3
when x=0, y =-2
when y=0, -3x-2=0-->x=-2/3
a town has 35,000 registered voters. a random sample of 500 voters finds that 125 of them are in favor of a new dog park. how many are to are likely to vote for the dog park. write a proportion to represent this problem or explain your reasoning.
Answer:
8750 registered voters
Step-by-step explanation:
Kindly refer to the attached image for explanations
Mr. Jackson’s monthly salary is revised from $2500 to $2600. What percentage is the salary increased?
Answer:
.004 %
Step-by-step explanation:
Leslie can but 88 pound bag of dog food for $7.40 or a 4 pound bag of the same dog found for $5.38 which is better?
Answer:
8 pound bag for $7.40
Step-by-step explanation:
7.40÷8= $0.925→ it means, per pound costs $0.9255.38÷4= $1.345→ it means, per pound costs $1.345Therefore, the first option for 8 pound bag for $7.40 is cheaper and better.
y + 174 = 200 Please do it quick!!!
Answer:
The answer is 26
Step-by-step explanation:
You need to subtract 174 from itself and then too 200.Then you should get your answer.
Answer:
y = 26
Step-by-step explanation:
y + 174 = 200
-174 -174
y = 26
Student council expects $150 students for a dance and spends $10 on food for each student. The council expects the number of students to increase by 8% each year for the next 5 years and wants to reduce the amount of money spent on food by 4% for each student each year.
Use the drop-down menus to choose or create functions to model:
A. The predicted number of students over time, S(t)
B. The predicted amount spent per student over time,A(t)
C. The predicted total expense for food each year over time, E(t)
We developed three functions to model student attendance, per-student expenditure, and total food cost. S(t) = 150 * (1 + 0.08)^t models the number of students, A(t) = 10 * (1 - 0.04)^t models the cost per student, and E(t) = S(t) * A(t) models the total cost.
Explanation:We are asked to model the predicted number of students, the amount spent per student and the total expense for food per year over time.
A. The function S(t) = 150 * (1 + 0.08)^t represents the predicted number of students over time.
'S' stands for the number of students.'t' stands for the time in years.B. The function A(t) = 10 * (1 - 0.04)^t represents the predicted amount spent per student over time.
'A' stands for the amount spent per student.C. The function E(t) = S(t) * A(t), represents the total predicted expense for food each year over time.
'E' stands for the total expense.So, 'S(t)' represents the increase of students, 'A(t)' represents the decrease in the amount spent per student, and 'E(t)' the total expenditure of food each year.
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Write a formula for r in terms of 0 based on the image below.
Given:
The arc length for the given sector is 7π
The central angle for the given sector is θ
The radius of the circle is r.
We need to determine the formula for r in terms of θ
Formula for r:
The formula for r in terms of θ can be determined using the arc length formula,
[tex]S=r \theta[/tex]
Substituting the values, we have;
[tex]7 \pi =r \theta[/tex]
Dividing both sides by θ, we get;
[tex]\frac{7 \pi}{\theta}=r[/tex]
Thus, the formula for r in terms of θ is [tex]\frac{7 \pi}{\theta}[/tex]
Suppose chocolate costs $17.60 per kilogram. Karega buys 25 grams of chocolate and Samadhi buys 100 grams of chocolate.
How much more did Samadhi pay for her chocolate?
$0.44
$1.32
$2.20
$2.64
Samadhi paid $1.32 more than Karega for her chocolate.
Explanation:The subject of this question is in Mathematics, specifically it involves unit conversion and arithmetic calculations. We know that chocolate costs $17.60 per kilogram. But Karega and Samadhi are buying chocolate in grams which means we need to convert the cost from kilograms to grams. 1 kilogram is equal to 1000 grams. So, cost of chocolate per gram = $17.60/1000 = $0.0176.
Karega is buying 25 grams of chocolate, so the cost = 25 * $0.0176 = $0.44. Samadhi is buying 100 grams of chocolate, so the cost =$0.0176 * 100 = $1.76. To find out how much more Samadhi paid for her chocolate compared to Karega, we subtract Karega's cost from Samadhi's cost which gives $1.76 - $0.44 = $1.32.
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Emilia and Sydney went out to dinner. The bill came to $24. They want to leave a 20% tip and split the bill. How much do they each pay?
Answer:
$9.6
Step-by-step explanation:
tip $24×20% = 24×20/100 = 480/100 = $4.8
How much do they each pay ?
($24 - $4.8) : 2 = $19.2 : 2 = $9.6
x/5 + 3 = 2 plz solve
-----------------------------------------------------------
X/5 +3 = 2
Subtract 3 from both sides:
x/5 +3-3=2-3
Simplify:
x/5=-1
Multiply both sides by 5:
5x/5=5(-1)
Simplify:
x= -5
Your Answer Is x= -5
plz mark me as brainliest :)
An art collector buys a replica of a famous sculpture. The replica has exactly the same shape as the original but is smaller. The replica is 18 cm tall, and the the
original sculpture is 30 cm tall. If 189 cm of bronze was needed to make the replica, how much bronze was needed to make the original sculpture?
Answer:
The answer is 315 cm of bronze
Step-by-step explanation:
Answer:
315cm
Step-by-step explanation:
For this, we need to set up a proportion.
18/189=30/x
Cross multiply.
18x=189*30
18x=5670
Divide both sides by 18.
x=315
John and Tyrone each go for a morning jog before work. John's jogging
pace is represented by the equation y=5x, where y is the number of
miles he jogs and x is the number of hours he jogs. Tyrone's pace is
given by the graph. Choose the statement that correctly compares their
unit rates.
The question asks to compare the unit rates of two joggers, John and Tyrone. John's unit rate is 5 miles per hour, as indicated by the equation y=5x. Without Tyrone's graph data, a direct comparison cannot be made.
Explanation:The subject of the question involves comparing unit rates of two joggers, which requires an understanding of linear equations and graph interpretations in mathematics. Based on the given information, John's jogging pace is defined by the linear equation y=5x, where y is the number of miles he jogs and x is the number of hours he jogs. This equation suggests that John's unit rate, or his speed, is 5 miles per hour. However, to compare John's unit rate to Tyrone's, we need additional information about the slope of Tyrone's graph, which represents his speed.
Without the specific graph or a defined equation for Tyrone's pace, we can't make a direct comparison. Typically, the unit rate for a jogger is found by taking the slope of the position vs. time graph, which involves dividing the change in position (the rise) by the change in time (the run). If the slope of Tyrone's graph were provided, we could determine his speed and compare it to John's.
Remember, the unit rate is a measure of how much of something occurs per unit of another thing. In this case, it's the speed at which each jogger moves per hour. If additional data from Tyrone's graph were given, we would look for a constant rate of change or identify two points on the graph to calculate the slope (speed) and thus compare the unit rates of the two joggers.
help me pls ASAP !!
I just need the simplified exponent
Answer:
256y^3/x^2
Step-by-step explanation:
A number cube is rolled three times. What is the probability of rolling a number less than 3 each time?
Answer:
8/27
Step-by-step explanation:
The probability of rolling a number less than 3 three times in a row on a number cube (or die) is 1/27.
Explanation:The subject of this question is probability in mathematics. A number cube, often referred to as a die, has six faces numbered 1 through 6. If we are looking for the probability of rolling a number less than 3, we are looking for the probability of rolling a 1 or a 2. Out of six possibilities, two are successful outcomes (1 and 2), so the probability of rolling a number less than 3 in one roll is 2 out of 6, or 1/3.
However, since the number cube is rolled three times, we have to consider this probability for each roll. In probability, when we want to find the likelihood of multiple events all occurring, we multiply the probabilities of each individual event. Therefore, the probability of rolling a number less than 3 three times in a row is (1/3) * (1/3) * (1/3) = 1/27.
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Consider the function f(x) = 3x2 + 7x + 2.
What is the value of the discriminant?
How many x-intercepts does this function have?
What is the number of zeros for this function?
Answer:
Step-by-step explanation:
This function I believe has one x intercept which is (-2/13,0)
Answer:
It's 25 , 2 , two real number solutionsStep-by-step explanation:
Just did it
Martin solved an equation, as shown below: Step 1: 19v = 76 Step 2: v = 76 - 19 Step 3: v =57 Part A: Is Martin's answer correct or incorrect? If it is incorrect, explain why it is incorrect and show the correct steps to solve the equation. (6 points) Part B: How many solutions will this equation have? (4 points)
Answer:
A. incorrect. He has to divide 76 by 19, instead of subtract 19 to 76.
B. This equation has one solution. v=4
Step-by-step explanation:
Hi, Martin’s answer is incorrect.
A. He has to divide 76 by 19, instead of subtract 19 to 76.
The correct steps are:
19v = 76
Since 19 is multiplying the variable, to eliminate it we have to divide by 19.
v = 76/19
v = 4
B. This equation has one solution. It’s v=4
Feel free to ask for more if needed or if you did not understand something.
Help anyone:) please?
Answer:
3 i believe i have not done this in long time
Step-by-step explanation:
Step 1: Put the numbers in order. ...
Step 2: Find the median. ...
Step 3: Place parentheses around the numbers above and below the median. Not necessary statistically, but it makes Q1 and Q3 easier to spot. ...
Step 4: Find Q1 and Q3. ...
Step 5: Subtract Q1 from Q3 to find the interquartile range.
Answer:
3
Step-by-step explanation:
The formula for the IQR is [tex]Q_{3} -Q_{1}[/tex] so you would subtract quartile 1 from quartile 3
11 - 8 = 3
IQR = 3
write a multiple of-6/-3 rational number
Answer:
A multiple of -6/-3 could be 2
Step-by-step explanation:
A multiple is a number that may be divided by another a certain number of times without a remainder. When we divide -6/-3 we get -2 which is rational and doesn't have any remainder.
Other examples: -2,
Describe how u can solved example 2 by using division ?
It takes Evan 14 minutes to complete a word search.
How many word searches can Evan complete in 98 minutes?
Answer:
7 word searches
Step-by-step explanation:
To solve this problem, all we have to do is take the total amount of minutes and divide it by the amount of minutes it takes Evan to complete one word search.
98/14 = 7
Evan can complete 7 word searches in 98 minutes.
He can search 7 words.
What is unitary method?The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
Given:
Evan 14 minutes to complete a word search
Evan can complete in 98 minutes
=98/14
=7
Hence, Evan can search 7 words in 98 minutes.
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Suppose that the probability that a person will die in the next 20 years is
17.5452%. If this person has a life insurance policy that will pay out $25,000
to the beneficiaries of the policy if the person dies in the next 20 years, what
is the premium of the policy? Assume that the administrative costs of the
policy amount to $65.
O A. $4450.50
O B. $4581.30
O C. $25,000
O D. $4523.89
Answer: $4450.50
Step-by-step explanation:
Just guessed and got it right
The premium of the policy will be $4451.3.
What is Insurance?A person or organisation and an insurance company enter into a contract known as insurance whereby the person or organisation pays the insurance company a premium in exchange for financial protection or reimbursement in the case of an unanticipated loss or event. Up to the limitations outlined in the insurance policy, the insurance company promises to pay for any covered losses or damages. Insurance can be used to guard against a range of hazards, such as liability, property damage, death, and injury.
The premium of the policy can be calculated as:
Premium = (Probability of death x Benefit amount) + Administrative costs
So,
Premium = (0.175452 x 25000) + 65
Premium = 4,386.3 + 65
Premium = $4,451.3.
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Please Help
The surface area S of a cube is equal to the sum of the areas of the 6 square faces that form the cube. We want to paint the cube and need to know how many square units of paint to purchase. If each face has side length s, then the formula S = 6s2 can be used to find the surface area of the cube. The length of a side is indicated in the cube below( s = x - 5). The surface area of the cube is 1944 units2.
What is the value of x? SHOW and EXPLAIN each of the steps you used to solve
Answer:
23
Step-by-step explanation:
-The length of the cubes side is (x-5) and the total surface area is 1944 sq units.
-We apply the formula for surface area and equate to solve for x:
[tex]A=6s^2\\\\1944=6(x-5)^2\\\\324=(x-5)^2\\\\324=x^2-10x+25[/tex]
#Equate to zero as below:
[tex]324=x^2-10x+25\\\\x^2-10x+25-324=0\\\\x^2-10x-299=0\\\\\# Quadratic \ Formula:\\\\x_{1,2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}\\\\\\=\frac{10\pm\sqrt{(-10)^2-4(1\times-299)}}{2\times1}\\\\x_1=23, \ \ \ x_2=-13[/tex]
length dimensions are always positive.
Hence, the value of x is 23
4
[tex]4 \sqrt{5} \times 3 \sqrt{5 } [/tex]
5х35
Answer:
60
Step-by-step explanation:
4 sqrt(5) * 3 sqrt(5) =
12 sqrt(5) sqrt(5)
12 *5
60
PLEASE I REALLY NEED HELP IT'S DUE TODAY AND I CAN'T DO THIS PLEASE HELP ME!!!
Data from 200 flights were collected. The flights were categorized as domestic or international and late or not late. Is there an association between international flights and a flight being late?
Find the relative frequency of a flight being late among international flights.
Answer: There is NO correlation between international flights and a flight being late.
Step-by-step explanation:
See attachment for rationale and step by step.
What is 3 divided by 0.05?
3 divided by 0.05 is equal to 60.
Given that we need to find the value of 3 divided by 0.05,
To calculate 3 divided by 0.05, you can use the following formula:
3 ÷ 0.05 = [tex]\frac{3}{0.05}[/tex]
To divide by a decimal number like 0.05, you can multiply both the numerator and denominator by a power of 10 to eliminate the decimal point.
In this case, multiplying by 100 will work:
[tex]3 \div 0.05 = \frac{3}{0.05} \times\frac{100}{100}[/tex]
Now we can perform the division:
[tex]3 \div 0.05 = \frac{3\times 100}{0.05 \times100}[/tex]
Simplifying further:
[tex]3 \div 100 =[/tex] [tex]\frac{300}{5}[/tex]
Finally, performing the division:
300 / 5 = 60
Therefore, 3 divided by 0.05 is equal to 60.
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Which net folds into the pyramid.
Answer:
I am pretty sure it’s c
Step-by-step explanation:
Answer:
I believe it is x
Step-by-step explanation:
I was looking at the pyramid net and the only two that looked close where "w" and "x" but "w" had flaws so that is why I believe the answer is "x".
What is 1 divided by .5
Answer:
[tex] \frac{1}{.5} \\ 1 \div 0.5 \\ = 2[/tex]
what is the volume of a cylinder with base radius 2 and height 9
Answer:
V = 113.04
Step-by-step explanation:
V=pi r^2 h
V= (3.14)(4)(9)
V=113.04
Volume of the cylinder is 113.14 cubic unit .
What is the formula of volume of a cylinder ?Let, radius of the cylinder = r unit
and height of the cylinder = h unit
∴ Volume of the cylinder = [tex]\pi[/tex][tex]r^{2}[/tex]h cubic unit
How to calculate the Volume of given cylinder ?Given, radius of the cylinder (h) = 9 unit
and given base radius (r) = 2 unit
∴ Volume of the given cylinder = [tex]\pi[/tex][tex]r^{2}[/tex]h cubic unit
= [tex]\frac{22}{7}[/tex]×[tex]2^{2}[/tex]×9 cubic unit [ ∵[tex]\pi[/tex]=[tex]\frac{22}{7}[/tex]]
= [tex]\frac{792}{7}[/tex] cubic unit
= 113.14 cubic unit
113.14 cubic unit is the volume of the given cylinder .
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Piper can run 3 laps in 8 minutes. Walker can run 10 laps in 25 minutes. Sophie can run 1 lap in 3 minutes. Who is the slowest runner?
Answer:
Sophie
Step-by-step explanation:
For each runner, divide their time running by the laps they ran.
Piper: 8÷3≈2.7
Walker: 25÷10=2.5
Sophie: 3÷1=3
Sophie takes the longest time to run one lap, she is the slowest.
Answer:
Sophie is the slowest runner.
Step-by-step explanation:
We are given the various constant of proportionally s.
3:8, 10:25, & 1:3
Simplify each one by finding a least common factor, LCF, for the first side of such, and multiply the number that would be needed to get to such on both sides.
Thus, 30 laps in 80 seconds , 30 laps in 75 seconds , and 30 laps in 90 seconds.
As seen here, 30:90 is lowest, so Sophie is the slowest runner.
Hope this helped!
~Penny