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wolverine [178]
3 years ago
15

21) BRAINLIEST AND 10+ POINTS!! PLS HELP ASAP :)

Mathematics
1 answer:
Varvara68 [4.7K]3 years ago
5 0
9.4 years would be the answer
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4 0
2 years ago
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

0 = 9a - 9 ( add 9 to both sides )

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
2 years ago
Help! Fast! Don't want to fail Please!
Marta_Voda [28]
1. 45
2. idk
3. See attached
4. 190

6 0
3 years ago
SOMEONE PLEASE HELP!!
ruslelena [56]
Your answer is 9 percent
7 0
3 years ago
A fine fabric was selling for $10.50 per half yard. Joni bought 2 1/3 yards. How much did he spend? Brainliest for correct answe
Alinara [238K]

Answer:

45.5

Step-by-step explanation:

First you would find 1/3 third of 10.50 and it is 3.5, you would then do 10.50 x 4 since it said 10.50 per half a yard, so you would do times 4 and you would get 42, you would then add 42 + 3.5 which equals 45.5.

8 0
3 years ago
Read 2 more answers
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