If a school bought 1,000 erasers as part of an order for supplies. The total cost of the erasers was $30. What was the cost for 1 eraser?

Answers

Answer 1

Answer: The cost of 1000 erasers was 30$, then one eraser would be 30/1000=0.03$

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SOLVE FOR VOLUME

Answers

Answer:

$196meters^2$

Step-by-step explanation:

The formula for the area of a triangle is : $(base*height)/(2)$

To work this out you would first have to work out the area of the triangle. You can do this by multiplying the base of 14 by the height of 14, this gives you 196.

The next step is to divide the answer of 196 by 2, this gives you 98. This is because the formula is the same as that for the area of a square and that a triangle would be half of a square with the same dimensions.

The final step is to multiply 98 by the length of 20, this gives you 1960 meters cubed.

1) Multiply 14 by 14.

$14*14=196$

2) Divide 196 by 2.

$196/2=98$

3) Multiply 98 by 20.

$98*20=196meters^2$

Answer:

volume = area of triangle * height = 12.124355653*14/2 * 20 = 1697.40 m3

Step-by-step explanation:

the triangle is equilateral triangle ->

a^2 = 14^2 - 7^2 = 147

-> a = 12.124355653

volume = area of triangle * height = 12.124355653*14/2 * 20 = 1697.40 m3

Factor and find the roots of y= 4×^2+4×-15

Answers

factor
=(2x - 3)(2x + 5)

roots (zero)
2x - 3 = 0
2x = 3
x = 3/2
x = 1.5

2x + 5 = 0
2x = -5
x = -5/2
x = -2.5

A fifth grade class painted pieces of cardboard for an art project. Each piece of cardboard had an area of 6.25 square inches. The students painted 200 pieces of cardboard each day.A. What is the total area of cardboard that they painted by the end of the 3rd day?
6.25x200=1250 1250 x3= 3750
B. At the end of the 3rd day students glued together all the pieces of the painted cardboard to form a large square mural and they cut the mural into 40 strips of equal sizes so they could move the mural. What is the area of each smaller strip of cardboard? Express the answer in decimal form.

Answers

i think that the answer is B

What expression represents five time the quotient of some number and ten?A: 5 ( 10 - z )
B: 5 ( z / 10 )
C: z ( 10 / 5 )
D: 5 ( z - 10 )

Answers

Answer: B

Step-by-step explanation:

First off, choices A and D can be elimination because you are not subtracting. In choice C, we have 10 divided by 5 as opposed to z divided by 5. The answer is B.

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