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2 years ago

Start with x^2 + 4x = 12 and complete the square, what is the equivalent equation?

1 answer:

3 0

The answer is A. You multiply each side by (b/2)^2. B is 4. 4 divided by 2 squared is 4. To make it the same equation squared, you factor it to (x+2)^2. You have to also add the (b/2)^2 to 12 so 12+4=16

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What is the answer to -3(9-x)+6x

marin [14]

Answer: 9−27

Step-by-step explanation:

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3 years ago

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2 years ago

Simplify 4(5+t)+2t<br> Please explain steps taken

Digiron [165]

Answer:

6t+20

Step-by-step explanation:

4(5+t)+2t =

= 20+4t+2t =

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2 years ago

Write the equation of a line perpendicular to 5x - 7y =-6 that passes through the point (-5,6)

Likurg_2 [28]

9514 1404 393

Answer:

7x +5y = -5

Step-by-step explanation:

You can find the perpendicular line by swapping the x- and y-coefficients, and negating one of them. The new constant can be found by using the given point.

7x +5y = 7(-5) +5(6) = -5

The perpendicular line through (-5, 6) is ...

7x +5y = -5

3 0

3 years ago

Suppose that you take 1000 simple random samples from a population and that, for each sample, you obtain a 95% confidence interv

Bogdan [553]

Using the interpretation of a confidence interval, it is found that approximately 950 of those confidence intervals will contain the value of the unknown parameter.

A x% confidence interval means that we are x% confident that the population mean is in the interval.

Out of a large number of intervals, approximately x% will contain the value of the unknown parameter.

In this problem:

95% confidence interval.
1000 samples.

0.95 x 1000 = 950

Hence, approximately 950 of those confidence intervals will contain the value of the unknown parameter.

A similar problem is given at brainly.com/question/24303674

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2 years ago