elizabeth asked 125 people if they can speak more than one language.36% sayed they can. how many people said they can?

Answers

Answer 1

Answer:

Answer:

45 people speak more than one language.

Step-by-step explanation:

36% of the 125 people Elizabeth questioned indicated they speak more than one language. Change the 36% into decimal format of 0.36 and multiply by the 125 people.

(0.36)*(125 people) = 45 people speak more than one language.

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sally can paint a room in 7 hours while it taks steve 9hours to finsh the same room. how ling will it take them to paint if they worked together?

Answers

How much part can sally paint in an hour ?
a ÷ 7 = a/7

And what about Steve ?
a ÷ 9 = a/9

Where, a is the total area of the room.

So, let the time taken by both of them to paint the room together be 't'

So,
t(a/7 + a/9) = a
t(9a/63 + 7a/63) = a
t(16a/63) = a
t = 63/16 ≈ 4 hr

Sally alone can paint the room in 7 hours.

In 7 hours Sally alone does the job.

In 1 hour Sally would do (1/7) of the job.

Steve can paint it alone in 9 hours.

In 9 hours Steve alone does the job.

In 1 hour Steve would do (1/9) of the job.

Both working together in 1 hour would do: (1/7) + (1/9).

(1/7)*(9/9) + (1/9)*(7/7) = 9/63 + 7/63 = (9 + 7) / 63 = 16/63

In 1 hour both will have done (16/63) of the job.

16/63 of the job will be done in 1 hour by both.

Therefore a 1 whole fraction of the job will be done in: 1 hour ÷ 16/63

   = 1 hour × 63/16

   = 63/16 hours = 3.9375 hours

It would take both 63/16 hours or 3.9375 hours.

A machine can produce 250 items per hour. If the operator of the machine works 40 hours per week, how many items are made by this machine in one year?

Answers

52 weeks per year

250 times number of hours=number of items produced

number of hours=number of hours worked per week times number of weeks
number of hourse=40 times 52=2080 hours

250 times 2080=520000 items

The ratio of girls to boys in Liza’s classroom is 5 to 4How many girls are in her classroom if there is a total of 27
students?

1. 12
2. 9
3. 54
4. 15

Answers

Answer is 4.) 15 girls.

If you go 27-5-4=18
18-5-4=9
9-5-4=0
so 5+5+5 (because it's 5 girls to 4 boys, only count the 5's) =15

Hope this helps! :)

Answer:

2.9

Step-by-step explanation:

Can 12,35,37 be a right triangle

Answers

Answer:

Yes

Step-by-step explanation:

If it could be a right triangle, then 12^2 + 35^2 would have to equal 37^2

12^2 = 144

35^2 = 1225

37^2 = 1369

1225 + 144 = 1369, which is 1369.

That means that it CAN form a right triangle

Answer:

yes

Step-by-step explanation:

Express v in terms of t

Answers

As per linear equation, 'v' can be expressed in terms of 't' as: v = 4t - 4

What is a linear equation?

"A linear equation is an equation in which the highest power of the variable is always 1. It is also known as a one-degree equation. When this equation is graphed, it always results in a straight line. "

Given linear equation,

$t = (v)/(4) + 1$

⇒ $(v)/(4) = t - 1$

⇒ v = 4(t - 1)

⇒ v = 4t - 4

Learn more about a linear equation here: brainly.com/question/25170296

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Move the 1 to the other side

t - 1 = v/4

4(t - 1) = v
4t - 4 = v

The intensity of a radio signal from the radio station varies inversely as the square of the distance from the station. Suppose intensity is 8000 units at a distance of 2 miles. What will the intensity be at a distance of 11 miles? Round your answer to the nearest unit