3 years ago

What is the simplified form of the following expression? 7m squared+ 6.5n- 4n+ 2.5m squared - n

Mathematics

1 answer:

DerKrebs [107]3 years ago

4 0

Answer:

1.5n+9.5m^2

Step-by-step explanation:

7m^2 + 6.5n -4n + 2.5m^2 -n

Combine like terms

6.5n-4n-n+7m^2+2.5m^2

1.5n+9.5m^2

You might be interested in

Two numbers whose sum is 29 and their difference is 15

n200080 [17]

Answer:

22 and 7

Step-by-step explanation:

Let x and y be the two numbers we are looking for:

The statement “their sum is 29” means x + y = 29

The statement “their difference is 15” means x - y = 15

we get this system:

x + y = 29 (1)

x - y = 15 (2)

Let’s solve it :

(1) + (2) ⇒ x + y + x - y = 29 + 15 ⇒ 2x = 44 ⇒ x = 44/2 = 22

Now we replace x by 22 in equation (1) :

22 + y = 29 ⇒ y = 29 - 22 = 7

6 0

2 years ago

This is fr due in 20 minutes. please help!

jeyben [28]

Answer:

i think 80/3

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Question is in photo.<br> Thanks

emmasim [6.3K]

No, the dots make no straight lines

7 0

3 years ago

Which of the following coordinates exists on the line y=2x+4? A. (-3,-2). B. (-1,3). C. (1,5). D. (2,4)

Alchen [17]

Solution is in the picture

Good luck:)

3 0

3 years ago

Read 2 more answers

Evaluate the expression without using a calculator.<br> In1/e^7

Sati [7]

Answer:

-7

Step-by-step explanation:

$ln(\frac{1}{e^7})\\=ln(e^{-7})\\ =-7ln(e)\\=-7$

8 0

3 years ago