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3 years ago

Solve for x. (x - 3)^2 -10 = 15

Mathematics

1 answer:

Brut [27]3 years ago

3 0

Answer:

Step-by-step explanation:

Let's go:

$(x - 3)^2 - 10 = 15 \\\ (x - 3)^2 = 15 + 10 \\\ (x - 3)^2 = 25 \\\ x - 3 = \sqrt{25} \\\ x - 3 = \pm 5$

Solution #1:

x - 3 = 5

x = 5 + 3

x = 8

Solution #2:

x - 3 = - 5

x = - 5 + 3

x = - 2

I hope I helped you.

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Answer:

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3 years ago

Find the area of a triangle with legs that are 9mm 6mm and 12mm

Sidana [21]

Here we are given the three sides of the triangle.

So we have Heron's formula to find its area.

Heron's formula is given by :

$A= \sqrt{S(S-A)(S-B)(S-C)}$

where A, B and C are sides of triangle and S is semi perimeter which is given by,

$S= \frac{A+B+C}{2}$

plugging values of A, B and C to find S

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Now plugging values of A, B , C and S in Heron's formula

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3 years ago

How many feet? Thank you for your time.

kramer

Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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