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Tanzania [10]
3 years ago
10

What is 7- (7r+7)= 6r+7

Mathematics
1 answer:
Sliva [168]3 years ago
8 0

Answer:

r= 43/13

Step-by-step explanation:

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Consider the problem of finding the line of symmetry and vertex of the quadratic equation f(x) =x^2-8x+15 What is the error in t
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We are given the quadratic:

f(x)=x^2-8x+15, with a=1, b=-8, c=15.


We know that the x-coordinate of the vertex, which is the point where the line of symmetry passes through is 

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Thus, the x-coordinate of the vertex is -\frac{b}{2a} =-\frac{-8}{2\cdot1}= \frac{8}{2}=4.

Thus, the line of symmetry is x=4.


Answer: <span>B. The line of symmetry should have been 4 instead of –4. </span>
6 0
3 years ago
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Answer:

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3 years ago
Three consecutive integers have a sum of 45
monitta

Three consecutive integers that have a sum of 45 are 14, 15 and 16. 14+15+16=45

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