2 years ago

If A=−2x+8 and B=2x−4, find an expression that equals 2A+B in standard form.

Mathematics

1 answer:

kirza4 [7]2 years ago

5 0

Answer: -2x + 12

Step-by-step explanation:

2A + B = 2(-2x + 8) + (2x - 4) = -4x + 16 + 2x - 4 = -2x + 12

You might be interested in

a spinner numbered 1-4 is spun 5 times. Each time the spinner landed on a composite number. What is the probablitliy that it wil

Hunter-Best [27]

Answer:

I think it's 2 out of 4

Step-by-step explanation:

I think this because no matter how many times u spin the probability/likelihood stays the same

4 0

3 years ago

What is 9 and 10? What's the CORECT answer?

rewona [7]

9. C, because subtracting a negative number "changes" the sign to +
10. C, for the same reason. The equation could be rewritten as -4.2+6.9, which equals 2.7

4 0

4 years ago

Simplify x^2-9 over x^2-3x

Alla [95]

Answer:

$\frac{x+3}{x}$ or x+3/x

Step-by-step explanation:

Using D.O.T.S (difference of two squares) formula :

$a^{2} -b^{2} = (a+b)(a-b)$

$x^{2} -9= (x+3)(x-3)$

Factorise the second bit:

$x^{2} -3x = x(x-3)$

Now write out this fraction:

$\frac{(x+3)(x-3)}{x(x-3)}$

Now we can cancel out repeated terms (x-3):

$\frac{(x+3)}{x}$
This is our final answer:

$\frac{x+3}{x}$

5 0

3 years ago

Read 2 more answers

Rita has deposited $1000 in a bank account. At the end of each year, the bank posts interest to her account in the amount of 5%

Butoxors [25]

5% of $1000 is $50 bringing up her balance to $1050 minus the $10 fee at the end the year making her balance $1040.
For year 2 it will be $1082
For year 3 it will be $1126.10
For year 4 it will be $1172.41
For year 5 it will be $1231.03

6 0

3 years ago

Each of the following sets of numbers represents dollars. Which set of numbers is most appropriate to label the six tick marks a

Serggg [28]

Answer:

Step-by-step explanation:

5 ounces is on the 3rd point up.

Each ounce costs $30, so 5 ounces costs $150. Divide it into 3.

7 0

3 years ago