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3 years ago

Is an estimate for the percent of a number always,sometimes or never greater than actual percent of the number

1 answer:

3 0

It would be sometimes because it can be 82.2% but if you round it the closest one would be 80% if it was 84.7% its closer to 85 so it would be 85% I hope I helped you out rate the answer if I got it right thanks!

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A square has an area of 81x square cm. What is the perimeter of the square ?

Fudgin [204]

Answer:

The perimeter of the square is $36\sqrt{x}\ cm$

Step-by-step explanation:

step 1

Find the length side of the square

we know that

The area of a square is equal to

$A=b^{2}$

where

b is the length side of the square

we have

$A=81x\ cm^{2}$

substitute and solve for b

$81x=b^{2}$

square root both sides

$b=9\sqrt{x}\ cm$

step 2

Find the perimeter of the square

we know that

The perimeter of the square is equal to

$P=4b$

we have

$b=9\sqrt{x}\ cm$

substitute

$P=(4)9\sqrt{x}$

$P=36\sqrt{x}\ cm$

6 0

3 years ago

How do you solve 145 times 23

liq [111]

Answer:

3335

Step-by-step explanation:

You basically add 145 together 23 times

6 0

3 years ago

Choose the equivalent system of linear equations that will produce the same solution as the one given below:

skelet666 [1.2K]

D is the answer as the both have solution x=-2 y=3
14x=-28 12(-2)-3y=-33
x=-2 -3y=-9
y=3
from the given equation
4x-y=11 eq 1
2x+3y=5 eq 2
x=y-11/4 from equation 1
subsitute this value of x in equation 2
2(y-11/4)+3y=5
y-11+6y=10
7y-11=10
y=3
subsitude this value of y in equation (x=y-11/4)
so x= -2
thus same solution so ANSWER IS D

3 0

3 years ago

Mark just landed a great job as an engineer where he will make $65,000 a year. The company he will work for guarantees a 2% pay

dalvyx [7]

Answer:

65000(1.02)^n.

Step-by-step explanation:

Salary = 65000(1.02)^n where n is the number of years he has worked for the company.

So after one year he earns $6500* 1.02 and after 2 years $65000 * 1.02^2.

5 0

3 years ago

The table shows the ratio of caramel corn to hot pepper corn in a bag. What is the constant of proportionality?

hodyreva [135]

Please provide the table

Thanks,
Johnny

6 0

3 years ago