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2 years ago

13

if it takes 10 men 10 days to dig a hole how long will it take 5 men to dig a hole that's half as big

2 answers:

Nataly [62]2 years ago

8 0

Answer:

10 days

Step-by-step explanation:

It will take 10 men 5 days to dig a hole half as big.

It will take 5 men 10 days to dig a hole half as big.

( Remember, the less people, the more time it will take. )

tangare [24]2 years ago

7 0

Answer:

10 men can dig 1 hole in 10 days

How long for 5 men to dig ½ hole?

The ratio to be concerned with is

(number of people / number of holes) = 10 days

5 people digging ½ hole will take 10 days.

Go here: http://www.1728.org/puzzle.htm

See puzzle #3

Step-by-step explanation:

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What is the slope of a line that is parallel to the line joining (7,-5) and (-5,7)

brilliants [131]

Answer:

Step-by-step explanation:

If two lines are parallel then they will have the same slope. So all you need to do is find the slope of the line that joins the two given points. You can use the slope formula $\frac{y_2-y_1}{x_2-x_1}$ . You can also graph the two points and use rise over run. $\frac{7-(-5)}{-5-7} =\frac{12}{-12}=-1$

8 0

3 years ago

The function p(x) = _2(x _ 9)2 + 100 is used to determine the profit on T-shirts sold for x dollars. What would the profit from

Valentin [98]

Answer:

Option (b) is correct.

The profit from sales if the price of the T-shirts were $15 a pieces is $28.

Step-by-step explanation:

Given : The function $p(x)=-2(x-9)^2+100$ is used to determine the profit on T-shirts sold for x dollars.

We have to find the profit from sales if the price of the T-shirts were $15 a pieces.

Consider the given profit function $p(x)=-2(x-9)^2+100$

For the profit, if the price of a t-shirt is $ 15

Put x = 15, we have,

$p(15)=-2(15-9)^2+100$

Simplify, we have,

$p(15)=-2(6)^2+100=-2\cdot 36+100$

Also, $p(15)=-72+100=28$

Thus, we get, The profit from sales if the price of the T-shirts were $15 a pieces is $28.

5 0

3 years ago

Read 2 more answers

What is the value of x in the inequality start fraction seven minus two x over negative four end fraction plus two less than neg

algol13

Answer:

$x$

Step-by-step explanation:

$\frac{7-2x}{-4} +2$

Subtract 2 from both sides

$\frac{7-2x}{-4}$

mutliply both sides by -4, flip the inequality

$7-2x >4x+8$

Add 2x on both sideds

$7>6x+8$

Subtract 8 from both sides

$-1>6x$

Divide both sides by 6

$x$

3 0

3 years ago

17. MODELING WITH MATHEMATICS The data

Ksenya-84 [330]

Answer:

Average annual tuition is $16991 for the year 2020.

Step-by-step explanation:

By using excel for the equation of the line of best fit,

Slope of the line from given data = 380.0286

y - intercept of the line = 11290.1

Therefore, equation of the regression line will be,

y = 380.0286x + 11290.1

Where x = number of years after 2005

Now we have to calculate the average annual tuition in the year 2020,

By substituting the value of x = 2020 - 2005

= 15 years

y = 380.0286×(15) + 11290.1

y = 16990.529

≈ 16991

Therefore, average annual tuition is $16991 for the year 2020.

6 0

3 years ago

A gymnastics class is having blueberries for a snack. A serving size of blueberries is 1/4 of a bowl. If there are 3 bowls of bl

SVETLANKA909090 [29]

Answer:

12 gymnast

Step-by-step explanation:

There are 4 servings per bowl and 4x3 is 12

4 0

3 years ago

Read 2 more answers