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Elina [12.6K]
3 years ago
10

Can someone please help me with question 18? Show your work.

Mathematics
2 answers:
Phantasy [73]3 years ago
8 0
The answer should be D. -7x-8
2(x-4)+6x-5x times 3
distribute the 2
2x-8+6x-5x times 3
Multiply the -5x and 3
2x-8+6x-15x
Combine like terms
-7x-8
masha68 [24]3 years ago
7 0
-7x-8........................................
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After 5 throws in a game of darts, Brent's mean score was 32. Calculate his total score.
ehidna [41]

1.To know this answer, we need to know some vocabulary that's used in t. Most people don't know how to solve questions if they have hard Vocabulary and what the question is Asking

Mean=The average of all his throws

It's asking us to calculate his total score  

2. Find Clues to help you solve word problems

Finding clues in Word Problems is a very important part a lot of people skip but this helps you solve the question easier

5 throws and Mean Score is 32 are the clues

3. Guess and check

The method to this thingy is called guess and check. There is another method which is slightly harder and i just don't want to do it.

Let's just say his scores were... 5, 6, 4, 5,10Add them up and you get 30Then 30/5

Let's try bigger numbers

20+25+20+20

If you like this method, you may try it another method is called work Backwards

5x32=160

Then divide 160 by 5 to double check and you get 32!!

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Therefore, the answer s 160 as his total score

hope this gives you a clue to what we are doing and when you have a question like this, I really hope you understand the concept

Hope this helped (:

5 0
3 years ago
-2(x - 4) = -8 solve
lilavasa [31]

X = 8

hope it helps : )

3 0
4 years ago
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Find the inverse of the functipn <br><br> f(x)=3x-7/2
vivado [14]

Answer:

2x+7/6

Step-by-step explanation:

an normal function would be mapping x to y, since this is the inverse we would map y to x

f(x) and y are the same so I will take f(x)  as "y"

1)3x-7/2=y

3y-7/2=x

solve/isolate "y" in 3y-7/2=x to get the value of  "y"

3y-7/2=x

add "7/2" to both sides

3y-7/2+7/2=x+7/2

3y=x+7/2

divide both sides by "3"

3y/3=x/3+7/2/3

simplify:

y=2x+7/6

hope this helps!

5 0
3 years ago
The function f(x) = 2(3. 5)x is reflected across the x-axis to create g(x). What is the function definition of g(x)? g(x) = (3.
VladimirAG [237]

Answer: Search it there is a video to help

Step-by-step explanation:

4 0
3 years ago
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Can someone please help me think of a number sentence using the pens and pencils to the right?
denis-greek [22]
Five times one ?????/

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