Please please please help me

Mathematics

2 answers:

Leviafan [203]3 years ago

8 0

The correct answer is 17 what i did was plug in 17 where ever you see x so x2 would be 17x2 an then plus the 5 gives u 39 3x 17x3=51 51+10=61 now add the totals 61 plus 39 gives u 100

Sergeeva-Olga [200]3 years ago

3 0

Answer:

D. 17

Step-by-step explanation:

1. Set up an equation (2x + 5) + (3x + 10) = 100

2. 2x + 3x= 5x and 5 + 10 = 15

3. The equation simplified 5x + 15 = 100

4. Move the 15 to the other side of the equation. 5x = 100 - 15

5. 5x = 85

6. Finally, divide 85/5

7. Our final answer is 17.

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Read 2 more answers

If y = -x² + 14x + 7 , then x = 10 is a counterexample for which conjecture?

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Answer:

The correct answer is B

Step-by-step explanation:

If we plug in x=10 to the equation, we get y=47

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