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Vinil7 [7]
3 years ago
9

Find the sum of 4x ^ 2 - 7 and 6x ^ 2 - 5 .

Mathematics
2 answers:
OleMash [197]3 years ago
5 0

Answer:

Step-by-step explanation:

almond37 [142]3 years ago
3 0

Answer:

10x² - 12

Step-by-step explanation:

4x² - 7 + 6x² - 5 (combine like terms)

10x² - 12

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PLEASE HELP ME BRO <br> Find the perimeter of this shape and show ur work.
mylen [45]

Answer:

2 (length +breadth)

Step-by-step explanation:

2(2x+3) (x+1)

Multiply two on both sides and solve it

5 0
3 years ago
PLEASE ANSWER THIS QUESTION TOO !! FOR 30 POINTS AND BRAINLIEST!!
s344n2d4d5 [400]

Answer:

3000 books

Step-by-step explanation:

We know the author receives a one time fee of $2500. On top of that, the author will receive $1.50 per book sold. This is a constant rate and is linear because of this. We can use y=mx+b. M is the slope or rate of change. M here is $1.50. B is the starting value which is $2500 here.

We write y=1.5x+2500.

This equation will give the amount of money the author earns for x number of books sold. If y=7000 for the author earning 7000. We will use inverse operations to isolate and find x.

7000=1.5x+2500

7000-2500=1.5x+2500-2500

4500=1.5x

4500/1.5=x

3000=x


8 0
3 years ago
Read 2 more answers
The ratio of the ages (in years) of two teachers is 8 : 9. The sum of their ages is 51. What is the age of each teacher?
Keith_Richards [23]

Answer:

Check pdf

Step-by-step explanation:

Download pdf
8 0
3 years ago
Shawna, Dexter, and Tilana are solving the equation -2.5(5-n)+2=15. Shawna says, “I can begin by dividing each side of the equat
laila [671]
Hi!
Shawna is correct because since it's multiplied to the  5-n you have to do the opposite which is division. 
Dexter is also correct because after distributing you can continue solving, there is nothing wrong with that. 
Hope this helps!
4 0
3 years ago
Read 2 more answers
|-2 + 5 | - |3 - 12| - 13=
zavuch27 [327]

Answer:

-19

3 - 9 - 13 = -19

Step-by-step explanation:

5 0
2 years ago
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