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madreJ [45]
3 years ago
6

If f(x)=3x+7 and g(x)=2x-5 find g(f(-3))A. -26 B.-9 C. -1 D. 10

Mathematics
1 answer:
love history [14]3 years ago
3 0
f(x)=3x+7 \\   g(x)=2x-5 \\ \\   g(f(-3))  = ? \\ \\f(-3)=3x+7 =3 \cdot (-3)+7=-9+7=-2 \\ \\ g(-2)=2x-5 =2*(-2)-5=-4-5 = -9\\ \\ g(f(-3)) = -9 \\ \\ Answer: \ B.) \ \ -9
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Solve for x. 3x - 1 = 27 x = 10 x = 28/3 x = 26/3
frutty [35]

Answer:

x = 28/3

Step-by-step explanation:

3x - 1 = 27

Add 1 to each side

3x - 1+1 = 27+1

3x = 28

Divide by 3

3x/3 = 28/3

x = 28/3

6 0
2 years ago
Find the surface area of a solid cylinder with radius 2m and length 6m ( famula)π=3.14​
Softa [21]

Answer:

100.544m

Step-by-step explanation:

Surface area of a cylinder = 2pie x rh + 2pie x r² where pie = 3.142

Therefore, (2x3.142x2x6) + (2x3.142x2²) =100.544m

6 0
2 years ago
A football team scored fewer than 16 points in Saturday’s game. Than wants to write an inequality for the number of points. He u
GalinKa [24]
C. the number of points scored by the team
6 0
3 years ago
Read 2 more answers
What are the roots of the equation 9x^2 + 54x +82 = 0 in simplest a + bi form?​
s344n2d4d5 [400]

Answer:

The roots are

<h3>x =  - 3 +  \frac{1}{3}  i \:  \:  \: or \:  \:  \: x =  - 3 -  \frac{1}{3} i \\</h3>

Step-by-step explanation:

9x² + 54x + 82 = 0

Using the quadratic formula

That's

<h3>x =  \frac{ - b\pm \sqrt{ {b}^{2}  - 4ac} }{2a}</h3>

From the question

a = 9 , b = 54 , c = 82

Substitute the values into the above formula and solve

That's

<h3>x =  \frac{ - 54\pm \sqrt{ {54}^{2}  - 4(9)(82)} }{2(9)}  \\ x =  \frac{ - 54\pm \sqrt{2916 - 2952} }{18}  \\ x =  \frac{ - 54\pm \sqrt{ - 36} }{18}  \\ x =  \frac{ - 54\pm 6i}{18}</h3>

Separate the real and imaginary parts

That's

<h3>x =  -  \frac{54}{18} \pm \frac{6}{18}  \: i \\ x =  - 3\pm \frac{1}{3} i</h3>

We have the final answer as

<h3>x =  - 3 +  \frac{1}{3}  i \:  \:  \: or \:  \:  \: x =  - 3 -  \frac{1}{3} i \\</h3>

Hope this helps you

5 0
2 years ago
10-1: Compound Probability
ahrayia [7]

Answer:

Step-by-step explanation:

Probability of black pens  =     3/14

Probability of white paper clips = 16/40

to find the probability of black pen and white paper clip we have to multiply these two probability.

3/14 x 16/40 = 48/560 = 8.6

3 0
3 years ago
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