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Sloan [31]
2 years ago
14

7y2 - 7y+ 4 -(-3y2 + 7y + 7) (Simplify your answer.)

Mathematics
2 answers:
lesantik [10]2 years ago
7 0

Answer:

10y2 -7y -3

Step-by-step explanation:

7y2 + 3y2= 10y2

-7y

4 - 7=-3

alexandr402 [8]2 years ago
3 0

Answer:

  1. 7y + 4
  2. -y - 7

Step-by-step explanation:

1. 7y2 - 7y + 4

7y × 2 = 14y

14y - 7y + 4

= <u>7y + 4</u>

2. -(-3y2 + 7y + 7)

-3y × 2 = -6y

-(-6y + 7y + 7)

-6y + 7y = 1y = y

= <u>-</u><u>y</u><u> </u><u>-</u><u> </u><u>7</u>

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Answer:

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Step-by-step explanation:

To find the missing length of any right triangle, you can use the Pythagorean Theorem (A^2+B^2=C^2) to solve. A and B represent the legs (which we do have) and C represents the hypotenuse (which we are trying to find). Insert our known values into the theorem, and we will get 24^2+7^2=C^2. Now we just do the basic math for the numbers that we have (24^2 is 576<em>;</em><em> </em>7^2 is 49), and that added up would equal to 625. Now, since C is being squared on the other side, we now have to root both sides. On the side where C is, the radical and the square will cancel out each other, leaving us with just C. But, on the side where 625 is, it should root to 25. Since C is by itself now, the number on the other side (25) will be our answer. Therefore, the missing side is 25 feet long.

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3 years ago
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3 years ago
The population density of a certain region is 60 people per square kilometer if the region covers 23 square kilometers what is t
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Step-by-step explanation:

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