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4 years ago

How would you write an expression using a variable for the area and perimeter of a square with side 2x-9

1 answer:

7 0

Perimeter :
because there are four sides to a square and all sides are the same, the answer is 4(2x-9)
area:
area is basically length times width so the answer is (2x-9)(2x-9) or (2x-9)^2

You might be interested in

Please help me because I don't understand how to do it.:)

nadezda [96]

Answer:

231.7 cm^2

Step-by-step explanation:

We can find the area by adding the area of the rectangle to the area of the 2 triangles.

The rectangle is

7+7+7 by 9

21 by 9

A = length * width

A = 21*9

A = 189

The triangles are identical so we find the area of one of them and multiply by 2

The base is 7 and the height is 6.1

A = 1/2 b*h

but since we have 2 of them

2A = 2*1/2 b*h

2A = b*h

2A = (7* 6.1)

= 42.7

Add the rectangles area to the area of the two triangles

189 + 42.7

231.7 cm^2

6 0

4 years ago

In a company, it takes 4 employees 4 days to complete a task. It would take 2 employees 8 days to complete the same task.

Triss [41]

The concept that can be used in order to answer this item is that of man-days. The total number of man-days required to do the job should always be constant.

This can be illustrated by the givens above.
Scenario 1:
N1 = (4 employees)(4 days) = 16 man-days

Scenario 2:
N2 = (2 employees)(8 days) = 16 man-days

The equation for determining the value of e is equal to,
k = (d)(e)

The answer is the second choice.

6 0

4 years ago

Read 2 more answers

Helppp!! Pls answer my question that you will see on my pageeee!!!

Nana76 [90]

Answer:just did hope i helped ; )

Step-by-step explanation:

8 0

3 years ago

Help ASAP please, 10 points if you do

Andre45 [30]

I would say B.

Your starting term is 10, so that is your a1 value. Each time you add 4 to the number before, like 10+4=14 and so on, so that would mean (a-1)+4.

7 0

3 years ago

Read 2 more answers

The two-way table shows the number of people who have or have not graduated from college and who live or do not live in their ho

neonofarm [45]

Answer:

0.28

Step-by-step explanation:

Refer the attached figure

Given :

People who live in their hometown and graduated from the college =8

People who do not live in their hometown and graduated from the college = 10

People who did not graduate from college and lives in home town = 6

People who did not graduate from college and do not live in home town = 4

To Find : Among people who do not live in their hometown, what is the relative frequency of not graduating from college?

Solution :

The total no. of people who do not live in home town whether they are graduated or not graduated = 14

People who did not graduate from college and do not live in home town = 4

Thus Among people who do not live in their hometown the relative frequency of not graduating from college :

People who did not graduate from college and do not live in home town/total no. of people who do not live in home town whether they are graduated or not graduated

⇒ $\frac{4}{14}$

⇒ $\frac{2}{7}$

⇒ $0.28$

Thus , Among people who do not live in their hometown the relative frequency of not graduating from college = 0.28

5 0

4 years ago

Read 2 more answers