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3 years ago

If f(x) = -6x + 5 and g(x) = x+1, what is (fºg)(3)?

Mathematics

1 answer:

WARRIOR [948]3 years ago

5 0

Answer:

(f o g)(3) = -19

Step-by-step explanation:

(f o g)(3) is f(g(3)). You need to first find g(3).

g(x) = x + 1

g(3) = 3 + 1

g(3) = 4

Next, you need to find f(g(3)). Since, g(3) = 4, you are finding f(4).

f(x) = -6x + 5

f(4) = -6(4) + 5

f(4) = -24 + 5

f(4) = -19

(f o g)(3) = -19

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HELP ME PLEASE!!!!

QveST [7]

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3 years ago

Can somebody plz help answer these questions (only if u know how to do this) thanks a lot! :)

Mamont248 [21]

Answer:

12. 3:12

Step-by-step explanation:

that is 12

4 0

2 years ago

F(x) = -7x2 + 9x - 15 and g(x) = -12x2 – 15x + 7

djyliett [7]

Answer:

${5x}^{2} + 6x = - 8$

Step-by-step explanation:

This question is asking you to insert two equations, f(x) and g(x), into the equation g(x) - f(x). This will lead to the equation below.

${ - 12x}^{2} - 15x + 7 - ({ - 7)x}^{2} + 9x - 15$

Now we can solve for the equation.

${ - 5x}^{2} - 6x - 8 = 0 \\ {5x}^{2} + 6x = - 8$

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2 years ago

Answer All The Questions

adell [148]

Answer:

Step-by-step explanation:

From the attachment, we can see that

<EBF = 33°

<EBD = 33°

<FED = 114°

<FBD = 66°

Part 2

The value of y is either of 70 or -80. But then, we all know that speed can not be negative, so the speed was 70 km/h

The return speed is y + 10 = 70 + 10 = 80 km/h

Total time = 350/70 + 350/(70+10)

Total time = 5 + 4.375

Total time = 9.375 hr

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3 years ago

Solve question 3 for <br> 41 points

Sever21 [200]

Answer:

(2)

Step-by-step explanation:

Our logarithmic expression is: $ln(\frac{\sqrt{e} }{y^3} )$ .

Remember the logarithmic property that ln(a/b) = lna - lnb. So, we can write this as:

$ln(\frac{\sqrt{e} }{y^3} )=ln(\sqrt{e} )-ln(y^3)$

Also, we can write square roots as powers of one-half, so √e = $e^{1/2}$ . There's another log property that: $ln(a^b)=b*ln(a)$ . We can apply that here for both the √e and the y³:

$ln(\sqrt{e} )-ln(y^3)=\frac{1}{2} ln(e)-3ln(y)$

Finally, note that ln(e) is just 1, so we have:

$\frac{1}{2} ln(e)-3ln(y)=\frac{1}{2} -3ln(y)=\frac{1-6ln(y)}{2}$

The answer is thus (2).

<em>~ an aesthetics lover</em>

7 0

3 years ago