Answer:
Yes, he is correct because 35 percent of 20 is 7.
Step-by-step explanation:
Cosine is transformed in the form:

The amplitude is a
The period of cosine is:

And the phase shift is always by c, so that means our transformed functon in the form mentioned above looks like:

So our period is 
Our phase shift is by
units to the right
and our amplitude is 3.
Answer:
11x + 1
Step-by-step explanation:
f(x) = 66x² + 17x + 1
Factoring:
f(x) = (6x + 1) (11x + 1)
Area of a rectangle is width times length. So if g(x) = 6x + 1, then h(x) = 11x + 1.
Step-by-step explanation:
from what I understand this should be the answer:
<u>x</u>. <u>y</u>
<u>12</u><u>. </u><u> </u><u> </u><u> </u><u> </u><u> </u><u>7</u><u>. </u><u> </u><u>Because</u><u> </u><u>y</u><u>=</u><u>x-5</u><u> </u><u>and</u><u> </u><u>7</u><u>=</u><u>12-5</u>
<u>30</u><u>. </u><u> </u><u> </u><u> </u><u>25</u><u> </u><u>Because</u><u> </u><u>25</u><u>=</u><u>30-5</u>
<u>15</u><u>. </u><u> </u><u> </u><u> </u><u> </u><u> </u><u>10</u><u> </u><u>Because</u><u> </u><u>10</u><u>=</u><u>15-5</u>
Answer:
c = 15/2
Step-by-step explanation:
Multiply both sides of the equation by 9, then reduce the fraction.
9(5/6) = c
15/2 = c
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<em>Alternate methods</em>
You are usually told to "cross-multiply" which means you multiply the expression by the product of the denominators. this would give you ...
9(5) = 6(c)
Then you would divide by the coefficient of c to get ...
(9·5)/6 = c = 15/2
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Since c is multiplied by 1/9, you can solve this by multiplying by the inverse of that coefficient, 9. That is what is done in the first section above. Usually, this does in one step what the "cross-multiply" method does in 2 steps.
__
The "cross multiply" step can also be done by multiplying by the least common multiple of the denominators, 18. Then you have ...
18(5/6) = 18(c/9)
15 = 2c
Now, dividing by the coefficient of c gives ...
15/2 = c