3 years ago

Evaluate 4a + 7b + 3a − 2b for a = 5 and b = −3.

1 answer:

5 0

Answer:

Step-by-step explanation:

$4a+7b+3a-2b\qquad\text{combine like terms}\\\\=(4a+3a)+(7b-2b)\\\\=7a+5b\qquad\text{put a = 5 and b = -3 to the expression}\\\\7(5)+5(-3)=35-15=20$

You might be interested in

makvit [3.9K]

S(-6, 4)

If you plot on a simple graph you will find the other end point S there

6 0

3 years ago

ivolga24 [154]

Uhm is this a question orrrrrr

5 0

3 years ago

klio [65]

Answer:

I am pretty sure it is when you have a sequence of numbers that you are subtracting or adding from by the same constant over and over

Step-by-step explanation:

an=a1+(n-1)d

d=common difference

an= the nth term in the sequence

a1 first term in the sequence. (Usually you can plug in 1, as the n, and work from there)

4 0

3 years ago

jeka94

$a)\\\\(x+2)(x+5)\\\\=x(x+5) + 2(x+5)\\\\=x^2+5x+2x+10\\\\=x^2+7x+10\\\\\\b)\\\\(x+2)(x-3)\\\\=x(x-3)+2(x-3)\\\\=x^2-3x+2x-6\\\\=x^2-x-6$

7 0

2 years ago

Anestetic [448]

Answer:

It has 4 significant figures, not 6

Step-by-step explanation:

4045 are the significant figures here

6 0

3 years ago