Suppose two sides of a square are given as x + 3 and 12 - x. What is its area?

2 answers:

8 0

The area is 15. Since squares have equal side lengths, you just have to find the value of x so that the answer is the same. x=4.5
4.5 + 3 = 12 - 4.5 = 7.5 Then all you have to do is multiply it by 2. That will give you 15. I hope you understand.

Karolina [17]3 years ago

5 0

Then you'd do this:

(x + 3)(12 - x)
= 12x - x^2 + 12x - 3x
= 21x - x^2

Hope it helped :)

You might be interested in

A farmer produces both beans and corn on her farm. If she must give up 16 bushels of corn to be able to get 6 bushels of beans,

lawyer [7]

Answer:

2.67 bushels of corn

Step-by-step explanation:

We can see it in the picture.

3 0

3 years ago

An experiment will be conducted to test the effectiveness of a weight-loss supplement. Volunteers will be randomly assigned to t

DerKrebs [107]

Answer:

Option c. The distributions of weight loss of the two treatments are approximately normally distributed.

Step-by-step explanation:

To increase the confidence level, the results must be able to satisfy the following conditions:

The sample size is increased. This reduces the margin of the error in the sampling experiment.
Reduction of the variability. This means that the less the data varies, the more precise the data is.
Using the one-sided confidence level
Lowering the confidence level.

All these characteristics can only be satisfied by the normal distribution curve.

3 0

3 years ago

Select all the names for a in the expression.

Lunna [17]

Answer:

In this equation "a" is a variable.

Step-by-step explanation:

A variable is a term used that does not necessary have a value attached to it. Instead any value can be input in for it.

5 0

3 years ago

Read 2 more answers