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Related Questions
During a two week period, Norm worked 85.6 hours. His hourly wage is $6.92. How much did he earn? (Round the answer to the nearest cent)
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Looking at the waves on an ocean beach, a girl notices that the waves reach the shore at the same time apart. She also notices that the distance between waves looks the same. In science, what do we call the distance between waves? A) amplitude B) frequency C) period D) wavelength
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Answer:
D) Wavelength
Step-by-step explanation:
The correct answer is wavelength. Wavelength is defined as the distance between two identical points on the waves.
Amplitude is the maximum/minimum height reached by the wave. Frequency is defined as the number of waves passing through a point in 1 sec. Period or Time period is the reciprocal of Frequency and it represents time taken for the wave to complete its one cycle.
Therefore, from the given options, Wavelength is the best possible answer.
Answer: THE ANSWER IS D)WAVELENGTH
Step-by-step explanation:
4n less than or equal to 12
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How do I solve the y= x/11- 11x
d/dx ( x/11- 11/x)
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Question 10 an urn contains two white marbles and one black marble. a marble is drawn from the urn without replacement and put aside without my seeing it. then a second marble is drawn, and it is white. what is the probability that the unknown removed marble is white, and what is the probability that it is black?
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Final answer:
The probability that the unknown removed marble is white is 1/2, and the probability that it is black is also 1/2. This is calculated by considering the outcomes of the draws, their probabilities, and the fact that drawing a white marble after another without replacement affects the outcomes.
Explanation:
The question involves calculating conditional probabilities in a scenario where marbles are drawn from an urn without replacement. Initially, the urn contains two white marbles and one black marble. A marble is drawn and set aside (its color unknown), and then a second marble is drawn, which is observed to be white. We are asked to find the probability that the first marble drawn was white, and the probability it was black.
To solve this, we consider the two possible scenarios for the first draw: drawing a white marble or drawing a black marble, and then drawing a white marble in the second draw. The probability of drawing white then another white (WW) equals, the probability of drawing a white marble first (2/3) multiplied by the probability of drawing the second white marble given the first was white (1/2). This gives (2/3)*(1/2) = 1/3. Alternatively, the probability of drawing a black then a white marble (BW) equals the probability of drawing a black marble first (1/3) multiplied by the probability of drawing a white marble given the first was black (2/2) = 1/3, simplifying to (1/3)*(1) = 1/3
To find the probability that the unknown marble is white, we see that both scenarios WW and BW result in drawing a white marble second, so we only need to calculate the probability of the WW scenario over the total probability of drawing a white marble in the second draw. This gives us 1/3 / (1/3 + 1/3) = 1/2. Therefore, the probability that the unknown marble is white is 1/2, and by complement, the probability it is black is also 1/2
A new sidewalk will be 4 ft wide, 280 ft long, and filled to a depth of 9 inches (0.75 ft) with concrete. How many cubic yards of concrete are needed?
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Answer:
Volume of the pit is [tex]31.11[/tex] cubic yards.
Step-by-step explanation:
First lets change all the values to yards.
1 yard = 3 foot
Width in yards = [tex]\frac{4}{3}[/tex] yards
Length in yards = [tex]\frac{280}{3}[/tex] yards
Depth in yards = [tex]\frac{0.75}{3}[/tex] yards
Volume of the pit = Length * Width * Depth
=[tex]\frac{4}{3} *\frac{280}{3} *\frac{0.75}{3}[/tex]
=[tex]\frac{4*280*0.75}{3*3*3}[/tex]
=[tex]\frac{840}{27}[/tex]
=[tex]31.11[/tex] cubic yards.
Volume of the pit is [tex]31.11[/tex] cubic yards.
An apple juice producer buys all his apples from a conglomerate of apple growers in one northwest state. the amount of juice squeezed from each of these apples is approximately normally distributed with a mean of 2.25 ounces and a standard deviation of 0.15 ounce.what is the probability that a randomly selected apple will contain between 2.00 and 2.15 ounces?
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What is 5(7h+3m) equal to?
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5(7h)=35h
5(3m)=15m
you should then have 35h+15m and since you cannot combine the variables that should be your final answer
5(7h) + 5(3m)
35h + 15m
What is the range of f(x) = (3/4)x – 4?
{y | y > –4}
{y | y > 3/4}
{y | y < –4}
{y | y < 3/4}
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Answer:
A- {y | y > -4}
Step-by-step explanation:
Since the range is x - 4 the range will only go down to - 4. It will not go past the - 4 mark. Therefore the range should be anything greater then -4 to infinity.
SO-
A- {y | y > -4}
find the height of each pyramid square pyramid: volume 297 ft cubed area of the base 81 ft squared
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The formula for the volume of a right pyramid is V=1/3Bh, where B is the area of the base and h is the height. Substituting the known information, we have:
297=1/3(81)h
297=27h
Divide both sides by 27:
297/27 = 27h/27
11 = h
I don't know if this is right but I got 0.14
Calculate the effective rate of interest (to the nearest hundredth percent) of the following Treasury bill. Given: $10,000 Treasury bill, 3.85% for 13 weeks.
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.. (effective rate) = r/(1 -rt)
If we assume a 52-week year, the t = (13 weeks)/(52 weeks) = 1/4.
.. (effective rate) = 0.0385/(1 -0.0385/4) ≈ 0.038874 ≈ 3.89%
a collection of dimes and nickels is worth $4.70 there are 60 coins in all how many of each are there?
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Answer:
26 nickels34 dimesStep-by-step explanation:
If all were nickels, the value would be 60×$0.05 = $3.00. Their $4.70 value is $1.70 more than that. For each nickel replaced by a dime, the value goes up by $0.05, so there must be 1.70/0.05 = 34 replacements. That is, ...
... there are 34 dimes and 60-34 = 26 nickels.
_____
Using an equation
In mixture problems, it often works well to let the variable represent the quantity of the largest contributor. Here, we can let "d" represent the number of dimes, the coin with the greatest value. Then 60-d will be the number of nickels, and the total value of the coins (in dollars) is ...
... (60 -d)×0.05 + d×0.10 = 4.70
... 0.05d + 0.05×60 = 4.70 . . .simplify
... 0.05d = 4.70 -3.00 . . . . . . . subtract 3.00
... d = 1.70/0.05 = 34 . . . . . . . . divide by the coefficient of d
There are 34 dimes and 26 nickels.
The sequence of math steps should look a lot like the sequence of steps described in words, above.
_____
As a mixture problem
The average coin value is 4.70/60 = 0.07833... = 7 5/6¢. Then the proportion that are dimes is given by ...
... (7 5/6 - 5)/(10 - 5) = (2 5/6)/5 = 17/30 . . . . . 10 and 5 are the cents values of the coins in the mix
Multiplying by the 60 coins, we find (17/30)×60 = 34 are dimes. The remaining 26 are nickels.
- - -
The formula used above is ...
... proportion of highest contributor = ...
... ((mix value) - (least contributor)) / ((greatest contributor) - (least contributor))
This is the generic solution for any mixture problem.
If your expenses are more than your income, then you have a positive net cash flow. Please select the best answer from the choices provided T F
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Answer:
No, it is not a positive net cash flow. Because they are spending more than they even have which is creating debt.
Step-by-step explanation:
If your expenses are more than your income, then you have a positive net cash flow, which is false.
What is cash flow?The cash balance of liquid assets coming into and going out of a business is referred to as cash flow. Money spent and money received reflect inflows and outflows, respectively.
The cash flow is the difference between outflow and inflow.
Cash flow = out flow - inflow
If the value of the cash flow is negative that means the expense is more.
If the value of the cash flow is positive that means the income is more.
If your expenses are more than your income, then you have a positive net cash flow, which is false.
More about the cash flow link is given below.
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The center of a circle is located at (5, −5) . The radius of the circle is 3.
What is the equation of the circle in general form?
x2+y2−10x+10y+41=0
x2+y2+10x−10y+47=0
x2+y2+10x−10y+41=0
x2+y2−10x+10y+47=0
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[tex](x - xo) {}^{2} + (y - yo) {}^{2} = r {}^{2} [/tex]
(x-5)²+(y+5)²=3²
x²-10x+25+y²+10y+25=9
x²+y²-10x+10y+41=0
Answer:
I did this twice to help anyone who might have missed from the same question I answered earlier. Have a nice day! Stay safe! And this is really good for k12 students!
Step-by-step explanation:
A woman has 7 keys. only one of them will open her door. when seh arrives at the door there is no sufficient light for her to find the correct key. if she tries one key at a time and discards the keys that don't work, what is the probability that she will open the door with the first key she picks? what is the probability that it will take exactly three attempts to open the door? suppose that the first three attempts to open the door have been unsuccessful. what is the probability that she will pick the right key the fourth time?
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[tex] \frac{1}{7} [/tex]
if it takes three attempts to open the door,the probability is
[tex] \frac{1}{3} [/tex]
if the three attempts would not work
then the probability that the fourth attempt will open the door is
[tex] \frac{1}{4} [/tex]
hope this helps
The chance of the woman opening the door with the first key she picks is 1/7, or approximately 14.29%. The probability that it takes exactly three tries to find the correct key is also 1/7 or 14.29%. If the first three tries are unsuccessful, the probability that the fourth key is the correct key is 1/4, or 25%.
The probability that the woman will open the door with the first key she picks is 1 out of 7 keys, or about 14.29%. This is because each key has an equal chance of being the correct one, and there is only one correct key among the seven.
For the probability that it will take exactly three attempts to open the door, we need to consider the sequence of events: She picks a wrong key first (6 out of 7 chances), and then picks another wrong key from the remaining six (5 out of 6 chances), and then finally picks the correct key from the remaining five (1 out of 5 chances). We multiply these probabilities: (6/7) * (5/6) * (1/5) = 1/7 or about 14.29%.
If the first three attempts have been unsuccessful, we are now left with four keys, one of which is the correct one. Therefore, the probability that she will pick the right key on the fourth attempt is 1 out of 4, or 25%.
the width of a large, rectangular-shaped tree farm is 1.9 kilometers. The length of the farm is 4.4 kilometers. What is the best estimate of the area of the farm ?
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Answer:- The best estimate of the area of the farm is 8 kilometers.
Explanation:-
Given:- Width of the rectangular shaped tree farm= 1.9 kilometers
⇒Estimated width of the farm=2 kilometers [2 is the nearest integer to 1.9]
Length of the rectangular shaped tree farm=4.4 kilometers
⇒Estimated length of the farm=4 kilometers [4 is the nearest integer to 4..4]
To make estimates, we usually round the numbers the nearest integer.
Now, Estimated Area of the Farm= estimated width × estimated length
= 2×4 kilometers = 8 kilometers.
∴the best estimate of the area of the farm =8 kilometers.
Lou Harris is guaranteed a minimum of $275 weekly salary plus 5 1/4% of hs total sales. What are his total sales for a week in which his gross pay was $700
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We can set up an equation for this. Let x be the amount of sales. 5.25% = 5.25/100 = 0.0525.
275+0.0525x=700
Subtract 275 from both sides:
275+0.0525x-275 = 700-275
0.0525x=425
Divide both sides by 0.0525:
0.0525x/0.0525 = 425/0.0525
x = 8095.24
uka and Anja each measured the height of their friend three times. Their friend is 59 inches tall. They recorded their measurements as shown. Luka: 59 in., 58, in., 58 in. Anja: 59.3 in., 59.6 in., 58.2 in. Which statement is true? Luka’s measurements are more precise and more accurate. Anja’s measurements are more precise and more accurate. Luka’s measurements are more precise, but Anja’s measurements are more accurate. Luka’s measurements are more accurate, but Anja’s measurements are more precise.
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Your correct answer would be the (last option, option d). The reason to why Luka’s measurements are more accurate, but Anja’s measurements are more precise would be because if you have noticed, Luka's is rounded to the answer, which would make this accurate, because it's rounded. But when it is very precise, that would be different, because this would not be accurate, because it would contain a direct number in this situation.
I hope this helps you!
Luka’s measurements are more precise, but Anja’s measurements are more accurate.
What is measurement?In the study of science and mathematics, measurement is a fundamental concept. The characteristics of an object or event that we can compare to other things or events are quantified by measurement. When discussing the division of a quantity, the term "measurement" is the one that is used the most frequently. Also, when it takes a certain number of things to complete a certain task. We frequently encounter various length, weight, and time measurement types in our daily lives.
Given actual height of their friend is 59 inches
Luka recording 59 in, 58 in, 58in
Anja recording 59.3 in, 59.6 in, 58.2 in,
Accuracy is how close a measured value is to the actual value.
Precision is how close the measured values are to each other.
Accuracy:
Luka: ( 59 + 58 + 58 ) / 3 = 58.33
Anja: ( 59.3 + 59.6 + 58.2 ) / 3 = 59.03 ( closer to 59 )
Precision:
Luka : 59 - 58 = 1 ( subtract the lowest from the highest result )
Anja: 59.6 - 58.2 = 1.4
Luka's measurements are more precise, but Anja's measurements are more accurate.
Hence option C is correct.
Learn more about measurement;
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Charlene has nine different necklaces, and she wears four at a time. How many different ways can Charlene wear four necklaces?
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What is the truth value of p ∨ q?
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Answer:
T T T F
Step-by-step explanation:
suppose that p is true and q is true then the truth value of p∨q is true .
when p is true and q is false then the truth values of p∨q is true
when we take p is false and q is true then the truth value is p∨q is true
when we take p is false and q is false then the truth value is p∨q is false .
if any value of p or q is true then truth value of p∨q is true and if both are false then the truth value of p∨q is false .
They could mow the lawn in how many hours if they work together
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Jack can mow 10% of the yard in 0.3 hours
Marilyn can mow 10% of the yard in 0.7 hours
Jack will mow 70% of the yard : 0.3 hours ( 10% ) × 7
= 2.1 hours . Jack can mow 70% of the yard in 2.1 hours
Marilyn will mow 30% of the yard : 0.7 hours ( 10%) × 3 = 2.1 hours. Marilyn can mow 30% of the yard in 2.1 hours.
John mowwing for 2.1 hours + Marilyn mowwing for 2.1 hours = 100% of the yard in 4.2 hours.
Awnser : 4.2 hours
First, figure out their mowing rates per hour.
Jack's is [tex] \frac{1}{3} [/tex] since he mows 1 lawn in 3 hours; Marilyn's is [tex] \frac{1}{7} [/tex] since she mows 1 lawn in 7 hours.
We now know that their combined rate of mowing 1 lawn is [tex] \frac{1}{3} + \frac{1}{7} [/tex]. Use the variable t for time and multiply it by their combined rate to figure out their combined time of mowing 1 lawn.
[tex]( \frac{1}{3} + \frac{1}{7})t =1[/tex]
[tex]( \frac{7}{21} + \frac{3}{21} )t=1[/tex]
[tex] \frac{10}{21} t =1[/tex]
[tex]t= \frac{21}{10} [/tex]
Answer:
Jack and Marilyn could mow the lawn in [tex] \frac{21}{10} [/tex] or 2.1 hours if they work together.
Trigonometric Identities and Applications?
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[tex]\bf 8cos^2(\theta )-3cos(\theta )=0\implies \stackrel{common~factor}{cos(\theta )}[8cos(\theta )-3]=0\\\\ -------------------------------\\\\ cos(\theta )=0\implies \measuredangle \theta =cos^{-1}(0)\implies \measuredangle \theta =90^o\\\\ -------------------------------\\\\ 8cos(\theta )-3=0\implies 8cos(\theta )=3\implies cos(\theta )=\cfrac{3}{8} \\\\\\ \measuredangle \theta =cos^{-1}\left( \cfrac{3}{8}\right)[/tex]
22)
[tex]\bf \begin{cases} y=cos(2x)\\ y=cos^2(x)-1 \end{cases}\implies \stackrel{intersection~at}{cos(2x)=cos^2(x)-1} \\\\\\ 2cos^2(x)-1=cos^2(x)-1\implies 2cos^2(x)-1-cos^2(x)+1=0 \\\\\\ 2cos^2(x)-cos^2(x)=0\implies cos^2(x)=0\implies cos(x)=0 \\\\\\ \measuredangle \theta =cos^{-1}(0)\implies \measuredangle \theta =180^o~~,~~270^o[/tex]
Trigonometric identities are equations that hold true for all permissible values of the involved variables. They are fundamental to many areas of mathematics and have applications in various fields such as physics and engineering.
Explanation:Trigonometric identities are equations that are true for all values of the variables where both sides of the equation are defined. They are fundamental to the study of mathematics, particularly in geometry, calculus and physics.
Some of the basic trigonometric identities include:
Reciprocal identities:sin = 1/csc θcos = 1/sec θtan = 1/cot θPythagorean identities:sin² θ + cos² θ = 11 + tan² θ = sec² θ1 + cot² θ = csc² θ...Trigonometric identities are widely used in solving trigonometric equations and proving other identities, and in many fields such as engineering, physics and computer science.
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Akira Chang's uncle dies without a will, leaving an estate of $945,000. His heirs consist of a wife and two adult children. His state requires that, in the absence of a will, each child is to receive two-thirds as much as a spouse. How much will his wife receive?
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.. w +2*(2/3*w) = 945,000
.. 7/3w = 945,000
.. w = (3/7)*945,000 = 405,000
The wife will receive $405,000.
Karla is mowing her lawn. She knows 2/5 of the lawn before stopping for a snack. She resumes mowing after her snack and mows another 1/3 of her lawn before stopping. What total fraction of the lawn does Karla mow before lunch?
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2/5+1/3=6/15+5/15=11/15 she mows before lunch
Karla mows a total of 11/15 of her lawn before lunch after adding the fractions 2/5 and 1/3 with a common denominator of 15.
The student's question has two parts where Karla mows her lawn in fractions, first 2/5 and then another 1/3. To find the total fraction of the lawn that she mows before lunch, these two fractions need to be added. However, since they do not have the same denominator, we first need to find a common denominator to combine these fractions properly.
The least common denominator (LCD) for 5 and 3 is 15. We convert the fractions to have this common denominator:
(2/5) becomes (6/15) after multiplying both the numerator and denominator by 3.(1/3) becomes (5/15) after multiplying both the numerator and denominator by 5.Now we add the fractions:
(6/15) + (5/15) = (11/15)
Thus, Karla mows a total of 11/15 of her lawn before lunch.
Calculate.
(10.4)2 =
20.16
100.16
108.16
20.8
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[tex]\boxed{ \frac{2^4*13^2}{5^2} = 108.16000} \\ \\ \\ \\ we \ first \ simplify \ 52/2 \\ \\ \boxed{\boxed{(52)^2 = (2^2*13)^2 = 2^4 *13^2}} \\ \\ this \ would \ all \ sum \ up \ to \ be . . . . \\ \\ (108.16)[/tex]
Your answer would be the: (third option)
Mark’s father drove the family car 32,143 miles last year. He drove the car 29,675 miles this year.
How many fewer miles did Mark’s father drive the car this year?
A. 2,468 mi
B. 2,578 mi
C. 3,468 mi
D. 3,478 mi
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Write a mixed number for p so that 3 1/4 x p is more than 3 1/4
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The value of p just needs to be greater than 1. It could be 43 million (and 2/7, since you want a mixed number).
Ethan is conducting an experiment to determine whether a new medication is effective in reducing sneezing. He finds 1,500 volunteers with sneezing issues and divides them into 2 groups. The control group does not receive any medication; the treatment group receives the medication. The patients in the treatment group show reduced signs of sneezing. What can Ethan conclude from this experiment?
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Based on results from that hypothesis testing Ethan can decide if there is a significant decrease of sneezing in the patients of treatment group or not.
However, before performing any such testing, Ethan can also observe the data and conclude on basis of his observations i.e. if considerable number of patients in treatment group show reduced signs of sneezing then the new medicine is effective in reducing sneezing.
Marlena is making fruit salad she will choose from 6 of the 11 different fruits offered at a fruit stand. How many different fruit salads can she make
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The Correct answer is 462
There are 50 dimes in a roll of dimes, 40 nickels in a roll of nickels, and 40 quarters in a roll of quarters. Rob has 12 rolls of coins with a total value of $70.00. He has 3 more rolls of nickels than dimes. How many rolls of each coin does he have?