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4 years ago

How many minutes will it take 5 people to stack 250 chairs if each person can stack 20 chairs a minute?

2 answers:

7 0

- Each person stacks 20 in one minute.

- 5 people can stack 100 in 5 minutes.
If so, how long would 250 take them ?

-- The same 5 people can stack 250 in (250/100)= 2.5 minutes.

Anastaziya [24]4 years ago

5 0

Ok, so here we need to set up a proportion.

20*5 = 100

So in a minute, the 5 people have 100 chairs stacked.

1/100 = x/250

Cross multiply

1*250 = 100x
250 = 100x
250/100 = x
x = 2.5

So it would take 5 people 2.5 minutes to stack 250 chairs.

Final answer: 2.5 minutes

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(02.06)

kari74 [83]

The measurements of an angle X is 80

6 0

3 years ago

Instructions: Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.

Morgarella [4.7K]

Answer:

y = 3x - 13................slope= 3, point= (5,2)

y = 3x + 11.................slope= 3, point= (2,17)

3y = x + 11................slope= 1/3, point= (-5,2)

3y = x - 13................slope= 1/3, point= (19,2)

Step-by-step explanation:

To match each equation to its slope and point, remember that an equation in y = mx + b has slope m. The point must also satisfy or make true the equation when substituted for (x,y).

y=3x-13 has slope 3. The point (2,17) make it false. But (5,2) makes it true.

17 = 3(2) - 13 2 = 3(5) - 13

17 = 6-13 2 = 15 - 13

17 = - 7 False 2 = 2 True

y=3x+11 has slope 3. This means (2,17) must be true.

3y=x+11 can be converted to y = 1/3x + 11/3. It has slope 1/3. Test each point.

2= 1/3(19) + 11/3 -2 = 1/3(17) + 11/3 2 = 1/3(-5) + 11/3

2 = 19/3 + 11/3 -2 = 17/3 + 11/3 2 = -5/3 + 11/3

False False 2 = 6/3 True

3y=x-13 can be converted to y = 1/3x - 13/3. It has slope 1/3. Test each remaining point.

2= 1/3(19) - 13/3 -2 = 1/3(17) - 13/3

2 = 19/3 - 13/3 -2 = 17/3 - 13/3

2 = 6/3 -2 = 4/3

True False

7 0

3 years ago

Read 2 more answers

Lisa has a certain amount of money. She spent 39 dollars and has 3/4th of the original amount left. How much money did she have

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If $\frac { 3 }{ 4 }$ is left, that means $\frac { 1 }{ 4 }$ was spent. So $\frac { 1 }{ 4 }$ of the total amount is equal to 39.. Let's say x to the total amount. $\frac { 1 }{ 4 } \cdot x=39\\ x=4\cdot 39\\ x=156\\$

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3 years ago

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A square pyramid has a base with side lengths each measuring 40 inches. The pyramid is 21 inches tall, with a slant height of 29

Alchen [17]

Answer

Find out the what is the surface area of the pyramid .

To proof

Formula

Surface area of a square pyramid

$= a^{2} + 2a \sqrt{\frac{a^{2}}{4} +h^{2}$