MATHEMATICS MIDDLE SCHOOL

Do all triangles have right angles? Explain.

Answers

Answer 1
Answer: No, because some angles are obtuse or acute....
Answer 2
Answer: Some are not because some are 180 degrees

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a rectanguler prism is 7 meters wide,8 meters tall,and 39.5 meters long. what is the volume of the container?

Answers

volume of recangular prism=legnth times widh times height


volume=39.5 times 7 times 8=2212 m^3

Can someone help me on B and C

Answers

B. If you look at the graph and go over 5cm and up 3m, you can see that that point is not near the others, so it can't be accurate according to the data on your graph.C. If you go over 3.2 cm on your graph, go up to where the other points are, and you will see that the most likely height would be about 4.7m. Try to imagine a line going through your graph around where the points are, that might help you see where other points would be. I hope that makes sense let me know if you need anything else I'm always happy to help :)

Shen’s mother gave him $10 to go buy groceries. He picked up a gallon of milk for $3.49, three pounds of oranges that cost $1.14 per pound, and a box of cereal for $3.46. Shen used front-end estimation to determine whether he had enough money for the groceries. How much did he estimate the total cost would be?

Answers

Gallon of milk: $3.49
3lbs oranges: $1.14(3) = $3.42
Box of cereal: $3.46

Front end estimation is taking the number in front and the rest of the numbers coming after it will be zeroes.

Using front end estimation:
$3.49 => $3.00
$3.42 => $3.00
$3.46 => $3.00

Add all these up; Shen estimated the total cost of the groceries would be $9.00.

Answer:

B

Step-by-step explanation:

Explain the steps you would take to write 36\10 as a decimal.

Answers

Divide by 36 by 10 which gets you 360% percent. Convert it to 3.60 as a decimal. I am sorry if I get this wrong cause I don't understand what you want. 
So you would do 36 divided by 10 and get 3.6 move 2 places to right and put a zero to get 360%

3(3t + s) and 3s - t S = 9 and t =12

Answers

the answer is 108+3s i think but not 100% sure
3(3(12)+9)
3(36+9)
3(45)
165

3(9)-12
27-12
15

A parking lot in the shape of a trapezoid has an area of 12,052.1 square meters. The length of one base is 82.4 meters and the length of the base is 108.6 meters. What is the width of the parking lot

Answers

When you solve for the area of a trapezoid, you have this formula:

A = ((a + b)/2) * h
where: a & b are the bases ; h is the height 

We just plug in the figures on the formula to get the needed information.

A = 12,052.10 square meters
a = 82.4 meters
b = 108.6 meters

12,052.10 = ((82.4 + 108.6)/2) h
12,052.10 = 191/2 * h
12,052.10 = 95.5 * h
12,052.10 / 95.5 = h
126.2 = height

The height of the parking lot is 126.20 meters.
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