2 years ago

Please anwser fast and give an explanation step by step thank you

Mathematics

1 answer:

Ludmilka [50]2 years ago

7 0

What is the question?

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Is it always true that (x+4) squared equals x squared plus 16?

galben [10]

Answer:

True

Step-by-step explanation:

(x + 4)² = (x + 4) (x + 4)

x² + 4² = x² + 16

6 0

2 years ago

Read 2 more answers

Please answer this multiple choice question CORRECTLY for 30 points and brainliest!!

strojnjashka [21]

The area of one face would he h^2.

There are 6 faces, so the total surface area would be h^2 x 6

Replace total surface area with 2.16, so you now have:

2.16 = h^2 x 6

Now we can solve for h.

Divide both sides by 6:

h^2 = 2.16/6

Take the square root of both sides:

h = √2.16/6

The answer is A.

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3 years ago

Module 6 What is the line of best fit? Why do we want the sum of the residuals to be as close to zero as possible?

Mamont248 [21]

Answer:

zero residual equals zero mean

6 0

3 years ago

The area of the circle is 144π m2<br><br> What is the diameter of the circle?

Over [174]

Answer:

Step-by-step explanation:

Remember that

Area of Circle = $\pi r^2$

$\pi = pi \\r = radius$

They told us that for this circle, the area is $144\pi m^2$

If you put it back into the formula for area of a circle we get:

Area of Circle = $\pi r^2$

$144\pi = \pi r^2$

Divide both sides by $\pi$ .

144 = $r^2$

Now we want to solve for r (r = radius).

You need to square root each side

$\sqrt{144} = \sqrt{r^2}$

$12 = r$

So now we know the radius, $r = 12$ metres

Also remember that

Diameter = $2r$

So,

Diameter = 2 times 12 = 24 metres

5 0

3 years ago

A triangle has one angle that measures 38 degrees, one angle that measures 135 degrees, and one angle that measures 7 degrees. W

timurjin [86]

Answer:

a scalene triangle

Step-by-step explanation:

all angles are different lengths

8 0

2 years ago