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ohaa [14]
3 years ago
8

Which expression is equivalent to the given expression?

Mathematics
2 answers:
antiseptic1488 [7]3 years ago
8 0

Answer:

O C.   -4x^2+5x-28

Step-by-step explanation:

3x^2+5x -7(x^2+4)      Distribute

3x^{2} +5x -7x^2-28       Multiply - 7 by 4

3x^2 +5x -7x^2 -28   Combine Like Terms

-4x^2 +5x-28           Final Answer

I am Lyosha [343]3 years ago
6 0

Answer:

C. - 4x^2 + 5x - 4

Step-by-step explanation:

just expand the equation and you'll get C

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Otto had two days to paint 9 paintings. He painted 5 1\5 yesterday. How many paintings does Otto need to paint today?
enot [183]

Answer:

He needs to paint 3 4/5 today.

Step-by-step explanation:

9 - 5 1/5 = 3 4/5

Otto will need to paint 3 4/5 today.

4 0
2 years ago
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The owner of a bike shop sells unicycles and bicycles and keeps inventory by counting seats and wheels. One day, she counts 21 s
Artemon [7]
U=-2b+30

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<span>in slope intercept form this is </span>
<span>u=-b+21 </span>

<span>The same thing for wheels is </span>
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6 0
3 years ago
Write an expression to represent the product of 6 and the square of a number plus 15.
inn [45]

Answer:

6x² + 15

6

Step-by-step explanation:

Let the number be x.

"the square of a number"

x²

"the product of 6 and the square of a number"

6x²

"the product of 6 and the square of a number plus 15"

6x² + 15

The coefficient is the number that multiplies the variable, so it is 6.

8 0
2 years ago
What is the area of a rectangle that is 1/2 of a meter long and 3/8 of a meter wide?
Margarita [4]

Answer:

Step-by-step explanation:

note : the area of a rectangle  is : A = L ×W

L : lenght    W  : the width

A = (1/2)(3/8) = 3/16 m²

4 0
3 years ago
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