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Alecsey [184]
3 years ago
7

Rebecca has 21 math problems to solve. She has solved 2-7 of them. How many problems has she solved?

Mathematics
1 answer:
solniwko [45]3 years ago
6 0
Rebecca has 21 math problems 
 

She has solved none....
2-7=-5 

You cannot solve negative five problems 

Answer: 0


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If 2x – 1 is a factor of 16x4<br> 24x3 + 2x + f, find f.
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Answer:

f = -5

Step-by-step explanation:

If 2x – 1 is a factor of 16x4 + 24x3 + 2x + f, find f.

If 2x - 1 = 16x⁴ + 24x³ + 2x + f, find f.

2x - 1 = 0

2x = 1

x = 1/2

Hence

f(1/2) = 16(1/2)⁴ + 24(1/2)³ + 2(1/2) + f

= 16(1/16) + 24(1/8) + 1 + f

= 1 + 3 + 1 + f

= 5+ f

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3 years ago
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Answer:

The answer is option 1.

Step-by-step explanation:

In order to simplify the expressions, you have to collect like terms :

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