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Bond [772]
4 years ago
10

Help on this please!

Mathematics
1 answer:
Nana76 [90]4 years ago
8 0
2/9 - 7/12

First, multiply to find a common denominator. Multiply both pieces of the left fraction by 12, and both pieces of the right fraction by 9.

24/108 - 63/108 = -39/108 = -13/36

a= -13
b= 36
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Only answer #5 <br><br><br>Please help me and thx and if u can answer #6 too if u can
Marianna [84]

Answer:

5. D

6. C

Step-by-step explanation:

<u>Question 5</u>

Lets plug in values of x and y into each equation to see which one works for the entire data set...

y=2x-4

1) Plug in -7 as x and -18 as y:

-18=2(-7)-4

2) Multiply:

-18=-14-4

3) Subtract:

-18=-18

The answers are the same, therefore the correct answer to question 5 is equation D. Keep in mind, you want to check ever single pair of points to make sure it works for all of them, I'm just not going to list that as it would make this answer a lot longer for no reason.

<u>Question 6:</u>

We know that the cost for the boat is $25 as a base price, and also costs an additional $1.30 per day for fuel.

The correct equation is C=25+1.30d, because we are adding 1.3 every single day.

4 0
3 years ago
What is the answer to 4x-5x+9=5x-9?
fiasKO [112]

Answer:

x=3

Step-by-step explanation:

First, combine like terms on the left side

4x-5x+9=5x-9

-x+9=5x-9

Subtract 9 on both sides

-x=5x-18

Subtract 5x on both sides

-6x= -18

Divide by -6 on both sides

x=3

Hope this helps! :)

5 0
4 years ago
Read 2 more answers
How to add and subtract polynomials
Lorico [155]
You combine like terms

Example: 5x^3+3x+1-4x^3-2x-1

The answer would be x^3+x
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Noah has a toy that requires 4 batteries. Noah buys batteries with a chance of lasting more than 2/3 hours, and he wants to esti
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Answer:

I Don't Know

Step-by-step explanation:

I am still in 7th grade, I haven't learned this yet. I need the points

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A pair of shoes that normally sells for $85.00 goes on sale for 35% off.
bagirrra123 [75]

Answer:

C: Melanie is correct.

Step-by-step explanation:

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4 years ago
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