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3 years ago

If g(x) = x^2 − 4, find g(-2).

Mathematics

1 answer:

Irina18 [472]3 years ago

4 0

Answer:

g(-2) = -8

Step-by-step explanation:

if g(x) = g(-2)

then x = -2

apply x = -2 to the equation G(x) = x² - 4

(-2)² - 4

= -8

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Math question.

Oduvanchick [21]

Answer:

C) 25%

Step-by-step explanation:

let salt be 's'

let water be 'w'

$\frac{s+1}{w+s+1} = 33\frac{1}{3} \\\\\frac{s+1}{w+s+1} = \frac{1}{3} \\\\\frac{w + s + 1}{3} = s+1\\\\3s +3 = w+s+1\\w = 2s+2\\\\\frac{s+1}{w+1+s+1} = \frac{3}{10} \\\\\frac{3(w+s+2)}{10} = s+1\\\\3w+3s+6 = 10s+10\\**w = 2s+2\\3(2s+2) + 3s + 6 = 10s+10\\\\6s+6+3s+6 = 10s+10\\9s+12 = 10s+10\\-s = -2\\s = 2\\\\w= 2s+2\\w=2*2+2\\w = 6\\\\\frac{2}{2+6} = \frac{2}{8} = 0.25$

0.25 = 25%

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2 years ago

The diameter of the earth is about 7900 miles. The diameter of Jupiter is about 88,800 miles, approximately 11 times that of the

jeka94

We know that the surface of a sphere is: S = 4 * pi * r^2 The surface of Earth is : Se = 4 * 3.1416 * (7900/2)^2 = 196,066,797.51 And the Jupiter is : Sj = 4 * 3.1416 * (88800/2)^2 = 24,772,840,374.32 So the surface of Jupiter is around 11^2 times bigger than the Earth

8 0

3 years ago

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Work out the volume of this hemisphere with diameter 9.6 cm

weqwewe [10]

Answer:

Please refer to the attachment

7 0

3 years ago

Expand the logarithm fully using the properties of logs. Express the final answer in

Ivenika [448]

Answer:

P=log(2)+log(3)+4.log(x)

Step-by-step explanation:

To solve the problem, we need to recall the following properties of the logarithms:

$log(x.y)=log(x)+log(y)$

$log(x^y)=y.log(x)$

We have the expression:

$P=log(6x^4)$

Factor 6=2*3:

$P=log(2\cdot 3x^4)$

Apply the property of the product:

$P=log(2)+log(3)+log(x^4)$

Now apply the property of the exponent:

P=log(2)+log(3)+4.log(x)

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3 years ago

What is the solution to the equation? √2x+10 -6=2

klio [65]

$\sqrt{2x+10} -6=2
$
$\sqrt{2x+10} =8$ we switched side of -6 and added it to 2
2x + 10 = 64 now we squared both sides to get rid of square root
2x = 54 we switched side of +10 and subtracted it from 64
x = 27 we divided both sides with 2

answer is x = 27

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3 years ago

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