MATHEMATICS MIDDLE SCHOOL

35 workers are employed to complete the construction in 16 days. Before the work starts, he is told to complete the task in 14 days. Assuming that all the workers work at the same rate, how many more workers does he need to employ in order to complete the project.

Answers

Answer 1
Answer:

Answer:

40 workers

Step-by-step explanation:

This job requires 35 workers and 16 days, so it requires

35 * 16 = 560 worker-days to complete

If you only have 14 days, then you need

560 worker-days/14 days = 40 workers

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When can you add or subtract equations in a system to solve the system? when do you have to multiply first? Justify your answers with examples.

Answers

You must always use the order of operations also known as PEMDAS meaning multiplication and division come before adding and subtracting for example when solving 2+2÷2 if not follwing PEMDAS it is 2 When you do it the correct way using PEMDAS it will be 3

What is 4 and square root of 72

Answers

Answer:

square root of 72 is approximately 8.49

i hope that right!

Step-by-step explanation:

Describe a situation where it is easier to use decimals than fractions

Answers

when you are ading or subtracting. it is a lot easier to do it in decimal form

Please help me I'm on a time crunch

Answers


You multiple it by 20....
1:20
2:40
3:60
4:80
5:100
So it’s 80 inches by 100 inches (80x100) =800 square feet
I was going to try to answer but the guy above answered it perfect aha

Anzelm wants to burn 540 calories while jogging. Jogging burns about 12 calories per minute. When Anzelm goes jogging, he usually plans to stop and rest for about 5 minutes. Complete the equation below to find the total number of minutes (including rest) that Anzelm should plan to be out jogging. Use m to represent the total minutes.

Answers

Anzelm wants to burn 540 calories while jogging. Jogging burns about 12 calories per minute.

he usually plans to stop and rest for about 5 minutes.

m  represents the total minutes.

12 calories per minute.

for m minutes the calories burn is 12m

He stop and rest for about 5 minutes. so we need to subtract 5 from total minutes

So expression becomes 12(m-5)

He wants to burn 540 calories. So we set the calories = 540

The equation becomes ,

12(m-5) = 540

Now we solve for m , total number of minutes

12(m-5) = 540(divide by 12 on both sides)

m - 5 = 45

m = 50 ( add 5 on both sides)

Anzelm should plan to be out jogging for 50 minutes
12(m-5)=540. 12 calories per. total minutes gos first in subtraction which is m. Minus 5 minutes.                    
                                       -Hope it helped-

Bethany has 9 pennies.what fraction of a dollar is this?

Answers

9/100
9 pennies/ 1 dollar
One penny equals a cent, which is a hundredth of a dollar. Therefore, nine pennies would be 9 times 1/100, which is 9/100 of a dollar.
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