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nata0808 [166]
3 years ago
12

Write in standard form. y=-(x-3)^2+2

Mathematics
1 answer:
erma4kov [3.2K]3 years ago
6 0

Answer:

y=x2+6x+9+2=x2+6x+11

Step-by-step explanation:

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HELP PLS Last year 15 students earned an A in math class. If I had 128 students, what percent of students did NOT earn an A?
BabaBlast [244]

Answer:

88%

Step-by-step explanation:

128-15=113

113/128=.882

88%

8 0
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Evaluate the integral of the quotient of the cosine of x and the square root of the quantity 1 plus sine x, dx.
VMariaS [17]

Answer:

∫((cos(x)*dx)/(√(1+sin(x)))) = 2√(1 + sin(x)) + c.

Step-by-step explanation:

In order to solve this question, it is important to notice that the derivative of the expression (1 + sin(x)) is present in the numerator, which is cos(x). This means that the question can be solved using the u-substitution method.

Let u = 1 + sin(x).

This means du/dx = cos(x). This implies dx = du/cos(x).

Substitute u = 1 + sin(x) and dx = du/cos(x) in the integral.

∫((cos(x)*dx)/(√(1+sin(x)))) = ∫((cos(x)*du)/(cos(x)*√(u))) = ∫((du)/(√(u)))

= ∫(u^(-1/2) * du). Integrating:

(u^(-1/2+1))/(-1/2+1) + c = (u^(1/2))/(1/2) + c = 2u^(1/2) + c = 2√u + c.

Put u = 1 + sin(x). Therefore, 2√(1 + sin(x)) + c. Therefore:

∫((cos(x)*dx)/(√(1+sin(x)))) = 2√(1 + sin(x)) + c!!!

4 0
3 years ago
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A radio station had 120 tickets to a concert. They gave away 2 times as many tickets to listeners as to employees. How many tick
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Step-by-step explanation:

If the tickets given to employees = 40

Then tickets given to listeners = 2 x no of employees tickets

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Total tickets = 40+ 80 = 120

8 0
3 years ago
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Step-by-step explanation:

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First to answer gets brainliest
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I think it's B

Step-by-step explanation:

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3 years ago
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