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3 years ago

14

In your notebook, set up the following addition using a vertical format and find the sum of the given polynomials.

2 answers:

larisa [96]3 years ago

4 0

7b + 3
-4b + 5
-3b + 2

If you add the negatives first by combining like terms, you'll get...

(-4b + 5) + (-3b + 2) = -7b + 7

Then do...

(-7b + 7) + (7b + 3) = 10

The reason is just 10 is because 7 + 3 = 10 and then the negative 7 and the positive 7 will cancel out and make 0b aka just 0 which leaves you with 10 as your answer.

GrogVix [38]3 years ago

3 0

Answer: the correct answer is 10

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3 years ago

Three numbers have an average of 15. If two of the numbers are 10 and 12, then what is the other number?

AveGali [126]

Answer:

Step-by-step explanation:

(12+10+x)/3=15

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45-12-20=x

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3 0

2 years ago

Help please!!!!!!!!!!!!!!!!!!!!!!

tresset_1 [31]

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4 0

2 years ago

8x + 12<br> Can someone please factorise this

ivanzaharov [21]

Answer:

4(2x + 3)

Step-by-step explanation:

Given

8x + 12 ← factor out the common factor of 4 from both terms

= 4(2x + 3)

3 0

2 years ago

Perform the indicated operation g(x)=-x-3 h(x) = x 2+X Find (goh) (x)

Klio2033 [76]

Answer:

$(g\circ h)(x)=-x^2-x-3$

Step-by-step explanation:

So we have the two functions:

$g(x)=-x-3\text{ and } h(x)=x^2+x$

And we want to find:

$(g\circ h)(x)$

This is the same thing as:

$=g(h(x))$

So, substitute h(x) into g(x):

$g(x)=-x-3\\g(h(x))=-(x^2+x)-3$

Distribute the negative:

$g(h(x))=-x^2-x-3$

And we're done!

So:

$(g\circ h)(x)=-x^2-x-3$

6 0

2 years ago

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