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2 years ago

G(x) = 3x-1 f(x) = x + 5. find g (f (4)

Mathematics

2 answers:

gladu [14]2 years ago

8 0

Answer:

g(x)=3

Step-by-step explanation:

joja [24]2 years ago

8 0

Answer:

Step-by-step explanation:

g(x) = 3x-1

f(x)= x+5

g(f(4)

plug 4 into f

f(4)

now apply x+5

f(4)=4+5=9

plug 9 into g

g(9)

now apply 3x-1

g(9)=3(9)-1

3 ×9= 27

27-1=26

hence the answer is 26

(sorry if I'm wrong I just finished this topic myself)

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Please i need some help on this question

Pachacha [2.7K]

Answer:

1) For 3 tickets, the cost is $12

2) For 5 tickets, the cost is $20

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4) For 10 tickets, the cost is $40

Step-by-step explanation:

1) For 3 tickets

8 = 2

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(8 ÷ x) = (2 ÷ 3)

Cross multiply,

2x = 8 x 3

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x = 24 ÷ 2

x = $12

Use the same principle for the other questions. Use X (or any other variable) to represent the missing value, I e. the value you are calculating.

I hope this helps.

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2 years ago

Last week, Becky went to dance class 4 times. Each class was 3/2 hours.

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3 years ago

Please help. Felipe is planning a party. He has $50 to spend on sandwiches That cost $2.50 Per person , $25 to spend on drinks t

MArishka [77]

Answer:

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Step-by-step explanation:

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2 years ago

Solve the equation 5x + 7y = 35 for y.

erastovalidia [21]

Answer:

D. y = -5/7x + 5

Step-by-step explanation:

5x + 7y = 35

-5x -5x

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3 years ago

Read 2 more answers

5cosx -2sin(x/2) +7=0<br>Help me to find x step by step<br>pls

miskamm [114]

Answer:

x = 180

Step-by-step explanation:

First, you need to know

1. Double-angle formula:

cos(2x) = $cos^{2}x - sin^{2}x$

2. Pythagorean identity:

$cos^{2}x + sin^{2}x = 1$

Back to your problem, replacing the variable by the above:

$5cosx-sin\frac{x}{2}+7 = 0$

$5(cos^{2}\frac{x}{2}-sin^{2}\frac{x}{2}) - 2sin\frac{x}{2} + 7 = 0$ By Double-angle formula

$5(1 - 2sin^{2}\frac{x}{2}) - 2sin\frac{x}{2} + 7 = 0$ By Pythagorean identity

Given $y = \frac{x}{2}$

$5(1-2sin^{2}y) - 2siny + 7 = 0$

$10sin^{2}y+2siny-12=0$

$5sin^{2}y+siny-6=0$

$(5siny + 6)(siny - 1)=0$ , we know -1 < sinx < 1, for every x ∈ R

$siny = 1, y =90$

$y = \frac{x}{2}$

$x = 180$

8 0

2 years ago