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emmainna [20.7K]
3 years ago
10

Please its urgent!!!​

Mathematics
1 answer:
Leviafan [203]3 years ago
4 0

Step-by-step explanation:

-1 + (-9w^2)-7w+7w^2

Combine like terms.

-9w^2 + 7w^2-7w-1

-2w^2-7w-1

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Which value of a makes the following equation true <br> (x+a)^2=x^2+16x+64
Juliette [100K]

Answer:

The value of a is 8.

Step-by-step explanation:

In the expression, x² + 16x + 64, 64 is a perfect square of 8 so if you factorize it, you will get :

x² + 16x + 64

= x² + 8x + 8x + 64

= x(x + 8) + 8(x + 8)

= (x + 8)²

(x + a)² = (x + 8)²

a = 8

8 0
3 years ago
If 3 is 5% of a number, what is 30% of that number?
Gre4nikov [31]
3=5%
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tada
4 0
3 years ago
What is 212,514 +396,705 estimated
umka21 [38]

Answer:

Estimate = 600,000

Step-by-step explanation:

An estimate can be defined as a rough calculation of a numerical value, usually the upper limitation.

Given the following numerical values;

212,514

396,705

To add the two values together, we would first of all determine the estimate.

Estimate of 212,514 = 200,000

Estimate of 396,705 = 400,000

Adding the two values;

200,000 + 400,000 = 600,000.

Actual addition of the values would have given;

212,514 + 396,705 = 609,219.

Therefore, 600,000 is an estimated value of 609,219.

3 0
3 years ago
What is the equation of a line with a slope of 1/2 that passes through the point, (-2, 5)?
laila [671]

Answer:

y = 1/2x + 6

Step-by-step explanation:

y = 1/2x + b

5 = 1/2(-2) + b

5 = -1 + b

6 = b

6 0
3 years ago
Read 2 more answers
Tom's and Tim's ages add up to 21 years. In 3 years, Tom will be twice Tim’s age. How old are they now?
Harrizon [31]

The correct answer between all the choices given is the first choice, which is "<span>Tom is 15, and Tim is 6"</span><span>. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.</span>

6 0
3 years ago
Read 2 more answers
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