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Usimov [2.4K]
3 years ago
7

Pls help i only have 10 minutes on my math test!! the ratios are 8:5 ?????:10

Mathematics
2 answers:
dlinn [17]3 years ago
5 0

Answer:

yes

Step-by-step explanation:

Andre45 [30]3 years ago
3 0
Answer: 16:10 i think
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The quadratic function below has an axis of symmetry through x = -4; a vertex at (-4, -9) and zeroes at x = -7 and x = 0.
Pavlova-9 [17]

Answer:

True

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

Here (h, k) = (- 4, - 9), thus

y = a(x + 4)² - 9

To find a substitute the coordinates of the zero (- 7, 0) into the equation.

0 = a(- 7 + 4)² - 9, that is

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9a = 9 ( divide both sides by 9 )

a = 1, thus

y = (x + 4)² - 9 ← expand factor using FOIL

y = x² + 8x + 16 - 9

y = x² + 8x + 7

4 0
3 years ago
Find an explicit rule for the nth term of the arithmetic sequence.<br><br> -13, -7, -1, 5, ...
Bad White [126]

Answer:

-13 + 5*n-1 I think

Step-by-step explanation:

8 0
3 years ago
Find all solutions to the equation. <br> cos^2 x +2cosx+1=0
Schach [20]

x= \pi

Step-by-step explanation:

\cos^2x+\cos x+1=0

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Kobotan [32]

Answer:

12 is the constant

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3 years ago
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