MATHEMATICS MIDDLE SCHOOL

Which is the most appropriate unit of measurements to use to measure the thickness of a quarter?Elaborate.

A.) meters
B.) Kilometers
C.) Centimeters
D.) Millimeters.

Answers

Answer 1
Answer: The best method to measure the thickness of a quarter is (C) Centimeters.

This is because the thickness of a quarter is very small and thus bigger units such as meters and kilometers will not be convenient. Centimeters is the best unit.

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33pt = blank qt blank pt
9(3+c+4) use distributive property to simplify the expression
A scale drawing for a rectangular parking lot measures 6.8 cm by 12.3 cm. The scale is 5 cm : 25 cm. Find the area of the parking lot.

can someone please help me asap you know i help you when needed anyways i need to be able to plot the x and y coordinates so how do i do that? when y=5 times 2^x x is the value i need to plug in to plot it on the graph the graph goes up until 20 so i just need some x values please

Answers

First question do u have a graphing calculator?? If so, go to the y= menu and type in 5times 2^x then hit 2nd and then graph find any coordinate pair you want Keep in mind I am explaining the steps to take on a Texas Instruments TI84 plus calculator Good luck!!
The equation y=5(2^x) gives you everything you need to plot any number of points.  You can give x any value and then just solve for y.  So what you are doing is giving the x coordinate and solving the equation for the y coordinate.  I like to keep it simple.  Try using 0, 1, -1, 2, and -2 for the x coordinates.

y = 5(2^x)
y = 5(2^0)
y = 5(1)
y = 5

So when x is 0, y is 5  (0, 5)

y = 5(2^1)
y = 5(2)
y = 10

So when x is 1, y is 10  (1, 10)

y = 5(2^-1)
y = 5(1/2)
y = 5/2

So when x is -1, y is -10   (-1, 5/2)

y = 5(2^2)
y = 5(4)
y = 20

So when x is 2, y is 20    (2, 20)

y = 5(2^-2)
y = 5(1/4)
y = 5/4

So when x is -2, y is 5/4    (-2, 5/4)

Now plot the points and it should look something like this... (see the pic)

33 pints=how many gallons?

Answers

Answer:

4.125 gallons

Step-by-step explanation:

Please help If the team’s average time is less than one minute per leg, then the eighth graders earn 50 points. If not, the seventh graders earn 50 points. Which grade should be awarded 50 points?

Answers

Answer:

the eighth graders receive the 50 pts because, they had the number 58 and 58 is under one minute.

Step-by-step explanation:

Answer:

the eighth graders receive the 50 pts because, they had the number 58 and 58 is under one minute.

Step-by-step explanation:

Find the area of the figure to the nearest tenth.

Answers

Answer:

36

Step-by-step explanation:

6 x 6 = 36

now to the nearest tenth it would be

36

so your answer is 36
The answer is 36 your welcome

A hose fills a hot tub at a rate of 2.58 gallons per minute. How many hours will it take to fill a 268​-gallon hot​ tub?

Answers

Answer:

1.73 hours

Step-by-step explanation:

This can be solved with proportions.

(2.58 gallons)/(1 minute) = (268 gallons)/(x minutes) \n

Cross multiply and you get:

2.58x gallons * minutes = 268 gallons * minutes\n

Divide by 2.58 gallons and you get:

x minutes = (268 gallons)/(2.58 gallons) * minutes \nx minutes = 103.876 minutes\nx = 103.876 minutes\n

And to find out the number of hours that is, divide by 60 and you get 1.73 hours.

Action movies make up 85% of Devon's movie collection. If he has 20 movies,how many action movies are in Devon's collection?

Answers

Method 1

We can find the number of Devon's movie collection by multiplying its percentage by the number of Action movies. That is;

Number of Devon's movie collection = (85)/(100) * 20=(85)/(5) =17

Method 2

We can also use ratio and proportion. According to the question, out of every 100 Action movies 85 are Devon's Movie collection. This means,


Action movies                                        Devon's collection                  

100                                                                         85

20                                                                             x

If 100 corresponds to 85, then 20 will correspond to a less value than 85. If less more divides,Hence,

x=(85 * 20)/(100)=17.

Therefore he has 17 movies that are in Devon's collection.
The answer is 17, because you know it’s going to be most of it, so you do 20 times .85 on your calculator, and you have your answer! :) 
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