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2 years ago

F(x) = -2 and g(x) = 2x² + x-3, find (f +g)(x) .

Mathematics

1 answer:

tekilochka [14]2 years ago

8 0

Answer:

2x^2 + x - 5

Step-by-step explanation:

(f+g)(x)=f(x)+g(x)=-2+2x^2 + x-3=2x^2 + x - 5

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Erica invests $10,000 at 5% interest compounded annually.

grigory [225]

A=P(1+i $)^{n}$
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your answer is D

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3 years ago

Chris Christina collects stamps she is 47 stamps and all she has 20 from Europe the number of African stamps is 2 times the numb

AVprozaik [17]

Answer:

Step-by-step explanation:

Let x represent the number of stamps from Europe.

Let y represent the number of stamps from Africa.

Let z represent the number of stamps from Asia.

She has 47 stamps in all. This means that

x + y + z = 47 - - - - - - - - - - - 1

The number of African stamps is 2 times the number of Asian stamps. This means that

y = 2z

She has 20 stamps from Europe. Therefore, substituting x = 20 and y = 2z into equation 1, it becomes

20 + 2z + z = 47

3z = 47 - 20 = 27

z = 27/3 = 9

y = 2z = 2 × 9

y = 18

She has 20 stamps from Europe, 18 stamps from Africa and 9 stamps Asia.

7 0

3 years ago

ASAP JUST ANSWER THX

Andrei [34K]

Answer:

Step-by-step explanation:

f(-9) = 25

g(-1) = 21

7 0

3 years ago

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Find an equation of variation where y varies jointly as x and the square of z, and where y=70, when x=21 and z=5.

Bezzdna [24]

Answer:

$y = 181.75xz^2$

Step-by-step explanation:

Given

y jointly varies to x and z^2

Required

Find the equation

We start by writing out the variation;

$y\ \alpha\ xz^2$

Write as equation

$y = kxz^2$

Substitute values of x,y and z

$70 = k * 21 * 25^2$

$70 = k * 21 * 25 * 25$

$70 = k * 13125$

Divide both sides by 7

$\frac{70}{13125} = \frac{k * 131251}{13125}$

$\frac{70}{13125} = k$

$187.5 = k$

$k = 181.75$

Substitute k in $y = kxz^2$

$y = 181.75xz^2$

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3 years ago

The following table shows the boiling points (in °F) of some common liquids and gases at atmospheric pressure. Substance Boiling

Amanda [17]

it would be by -25.6 degrees Fahrenheit

7 0

4 years ago

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