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iogann1982 [59]

3 years ago

15

IF 30 Men Car do a piece of Work in 30 days the

2 answers:

liubo4ka [24]3 years ago

8 0

10 days because 30 men = 30 days, so in that logic 10 days = 10 men

kiruha [24]3 years ago

4 0

Answer:

let, the days for 10 men be x

30/10=x/30
900=10x
x=900/10
x=90

so 10 men can complete the same work in 90days.

Hope it helps.

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What is the measure of

Dvinal [7]

Answer:

Okay buddy the answer is 63 because if you look at all the angles they are suppose to add up to 180 so with the line D and A the angles is 128 so the angle on the other side is 52 so 52 plus65 is 117 so then 180-117 is 63

Step-by-step explanation:

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3 years ago

(2a² – b) (за² + 3b)

nataly862011 [7]

Answer:

a^4+3a^2-3b^2

Step-by-step explanation:

$\hookrightarrow \: (2 {a}^{2} - b)(3 {a}^{2} + 3b) \\ \hookrightarrow \:2 {a}^{2} (3 {a}^{2} + 3b) - b(3 {a}^{2} + 3b) \\ \hookrightarrow \:6 {a}^{4} + 6 {a}^{2} b - 3 {a}^{2} b - 3 {b}^{2} \\ \hookrightarrow \:{a}^{4} + 3 {a}^{2} b- 3 {b}^{2}$

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2 years ago

Each day, a young person should sleep 9 hours plus 1 4 hour for each year that the person is under 18 years of age. Assuming the

Andre45 [30]

Answer:

$y(x) = 9 + 0.25*(18 - x)$

Step-by-step explanation:

We have the following variables:

y: hours of sleep

x: age

Each day, a young person should sleep 9 hours

This means that y is 9 added to something

plus 1 4 hour for each year that the person is under 18 years of age.

For each year the person is under 18 years of age, she should sleep 1/4 = 0.25h on top of the 9 hours.

So the equation relating hours of sleep y and age x is:

$y(x) = 9 + 0.25*(18 - x)$

7 0

3 years ago

Which is cheaper? Buying 3 cans of bake beans at 1.50 each or a triple pack for $5

Fiesta28 [93]

Answer:

Buying 3 cans individually.

Step-by-step explanation:

If you bought 3 cans for 1.50 it would be 4.50.

If you bought a triple pack it would be 5 dollars.

So 4.50 is less than 5 dollars.

Hope this helps!

8 0

2 years ago

Read 2 more answers

The product of 5 and a number y

zysi [14]

Answer: 5y

Step-by-step explanation:

Product means the multiplication of, so taking the product of 5 and y we simply have;

5*y=5y

8 0

3 years ago

Read 2 more answers