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Marta_Voda [28]
3 years ago
15

Help please I'm really struggling ​

Mathematics
1 answer:
Dmitrij [34]3 years ago
8 0

Answer:

a).

(fog)(x) = f(g(x)) \\  = (3x + 1) + 4 \\ = 3x + 5 \\

b).

(gof)(x) = g(f(x)) \\  = 3(x + 4) + 1 \\  = 3x + 12 + 1 \\  = 3x + 13

c).

(fog)( - 2) = 3( - 2) + 5 \\  =  - 6 + 5 \\  =  - 1

d).

(gof)( - 2) = 3( - 2) + 13 \\  =  - 6 + 13 \\  = 7

I hope I helped you^_^

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A person gain sp of 4 lemons by selling 20 lemon find profit percentage?​
dezoksy [38]

Answer:

Question not Understood

Step-by-step explanation:

I am not understanding the question. Are they Gaining 4 lemons by selling 20? Did they buy 24 lemons, and sell 20 then keep the 4? please elaborate

3 0
3 years ago
Suppose someone gives you 8 to 2 odds that you cannot roll two even numbers with the roll of two fair dice. This means you win ​
krek1111 [17]

Complete question :

Suppose someone gives you 8 to 2 odds that you cannot roll two even numbers with the roll of two fair dice. This means you win $8 if you succeed and you lose $2 if you fail. What is the expected value of this game to​ you? What can you expect if you play 100 times.

Answer:

$0.5 ; win $50 with 100 rolls

Step-by-step explanation:

From a roll of two fair dice; probability of obtaining an even number :

Even numbers = (2, 4, 6) = 3

P = 3 /6 = 1 /2

For 2 fair dice ; probability of rolling two even numbers : independent event.

1/2 * 1/2 = 1/4

Hence, p(success) = 1/4 ; P(failure) = 1 - 1/4 = 3/4

Probability table

Winning = $8 or loss = - $2

X : ____ 8 ______ - 2

P(x) __ 1/4 ______ 3/4

Expected value : E(x) = ΣX*P(x)

E(x) = (8 * 1/4) + (-2 * 3/4)

E(x) = 2 - 1.5

E(x) = $0.5

Since expected value is positive, the expect to win

If played 100 times;

Expected value = 100 * $0.5 = $50

6 0
3 years ago
I need help with this as well!<br>Thank you<br>​
liberstina [14]

Answer:

X= 78

Step-by-step explanation:

180-115=65 that's one of the angles

and the other one is 360-323=37

and add the two angles together  = 102

then finally 180-102=78 and that's it  

4 0
3 years ago
Convert: 4 gal 3 qt = [ qt​
Firlakuza [10]

Answer:

19 quarts can i get brainliest

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
THANK YOU , PLEASE INCLUDE EXPLANATION
frosja888 [35]

Remark

This will be a little late, but I'll answer it anyway. The more you see of the sine law, the clearer it will be.


Step One

Set up the sine Law.

\dfrac{Sin(x)}{12}=\dfrac{sin(75)}{22}


Step Two

Substitute values

Sin(x) = ??

sin(75) = 0.9659


\dfrac{Sin(x)}{12}=\dfrac{0.9659}{22}


Step Three

Cross multiply and Solve

22* Sin(x) = 12 * 0.9659

22* Sin(x) = 11.591 divide by 22

sin(x) = 11.591 / 22

sin(x) = 0.5269


Step Four

You have to know how to use the inverse of an angle to get the answer. I do it as my calculator would do it. If it doesn't work with yours, let me know.


x = sin^-1(0.5269)

2nd F

Sin^-1

(

0.5269

)

=

You should get 31.79 degrees.

5 0
3 years ago
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