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kumpel [21]
2 years ago
15

I need help!!!! The square below has the given side lengths. x is positive

Mathematics
2 answers:
Allisa [31]2 years ago
7 0

Answer:

See below, please

Step-by-step explanation:

This square

3 {x}^{2}  + 6x + 7 = 2 {x}^{2}  - 2x + 27

(3 {x}^{2}  - 2 {x}^{2} ) + (6x  +  2x) + (7 - 27) = 0

{x}^{2}  + 8x - 20 = 0

(x + 10) \times (x - 2) = 0

Hence,

x1 =  2

x2 =  - 10

Because x is positive, So,

x = 2

Then we know

The length of one of the sides

= 3 {x}^{2}  + 6x + 7 = (3 \times  {2}^{2})  + (6 \times 2) + 7 = (3 \times 4) + 12 + 7 = 31

The area of the square

=  {31}^{2}  = 961

The perimeter of the square

= 31 \times 4 = 124

Hoochie [10]2 years ago
5 0

Answer:

Value of X: X=2

Length of One Side: 31

Area: 961u^2

Perimeter: perimeter = 124

Step-by-step explanation:

Set the sides equal to each other, simplify and then use quadratic equation. One result is positive and the other is negative, shape's sides have to be positive so use the positive value for X.

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Step-by-step explanation:

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A poll was conducted by a home mortgage company regarding home ownership in the United States. The company polled 1,488 American
____ [38]

If the sample size is 1488 and confidence interval of 99% then the margin of error is 0.03088.

Given sample size of 1488, percentage of those polled own a home be 69% and confidence level be 99%.

We are required to find the approximate margin of error.

Margin of error is the difference between calculated values and real values.

n=1488

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Learn more about margin of error at brainly.com/question/10218601

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2 years ago
Number 13 please. I know the answer is 20 I just don’t know how to get there
Rudiy27

4/20 is 0.20, which is equivalent to 20%.


Remember that 1.0=100%, 0.5=50%, 0.2=20%, 0.05=5%, and so on.

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Please help asap
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