All categories

3 years ago

Let f(x) = -5x-1 and g(x)=x2 + 5. = X Find (f o g)(-2).

Mathematics

1 answer:

Anastasy [175]3 years ago

3 0

Answer:

- 46

Step-by-step explanation:

evaluate g(- 2) then substitute the result into f(x) , that is

g(- 2) = (- 2)² + 5 = 4 + 5 = 9 , then

f(9) = - 5(9) - 1 = - 45 - 1 = - 46

You might be interested in

Plz help fast there is a (pic)

777dan777 [17]

Answer:

$\boxed {s = 14}$

Step-by-step explanation:

Solve for the value of $s$ :

$\frac{2}{3}s + \frac{5}{6}s = 21$

-Combine like terms:

$\frac{2}{3}s + \frac{5}{6}s = 21$

$\frac{3}{2}s = 21$

-Multiply $\frac{2}{3}$ on both sides, which is the reciprocal of $\frac{3}{2}$ , and multiply $21$ and $2$ :

$s = 21 \times (\frac{2}{3})$

$s = \frac{21 \times 2}{3}$

$s = \frac{42}{3}$

-Divide $42$ by $3$ :

$s = \frac{42}{3}$

$\boxed {s = 14}$

Therefore, the value of $s$ is $14$ .

7 0

3 years ago

If y varies jointly as x and z and y = 12 when x = -2 and z=3, find y when x is 4 and z is -1

jeka57 [31]

Answer:

D. 8

Step-by-step explanation:

y varies jointly as x and z

y = k(xz)

-------------------------

Find k, the constant of variation

y = 12 when x = -2 and z=3

12 = k(-2 * 3)

12 = k(-6)

k = -2

-------------------------

find y when x is 4 and z is -1

using k = -2

y = -2(4 * -1)

y = -2(-4)

y = 8

8 0

3 years ago

15 points ! Find m < RQP

Phoenix [80]

Answer:

<RQP = 70°

Step-by-step explanation:

<RQP = 1/2 (140)

<RQP = 70°

4 0

3 years ago

Please help and explain all the way

Nesterboy [21]

Answer:

1.4 oz

Step-by-step explanation:

you know 3.5oz is 2.5 servings and you need to know what one is

3.5/2.5 = 1.4

one serving is 1.4

check -> 1.4 x 2.5= 3.5

4 0

3 years ago

What's m2-5m-14=0 solved using the quadratic formula?

Mashutka [201]

The answers are x=7 or x=-2

$x=-b$ + $\sqrt{b ^{2} -4ac}$ /2
x=5 + $\sqrt{(-5) ^){2}-4(1)(-14 }$ /2
x=5 + $\sqrt{25+56}$ /2
x=5 + $\sqrt{81}$ /2
x=5 + $\sqrt{81}$ /2.....x=7
or
x=5 - $\sqrt{81}$ /2....x=-2

3 0

3 years ago