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Anna11 [10]
4 years ago
7

Y = −x2 − 8x − 15 vertex

Mathematics
1 answer:
EastWind [94]4 years ago
4 0

Answer: The vertex is (-4,1)

Explanation: I used -b/2a to find the x, then plugged in -4 to find the y, which is 1.

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Amanda paid $4.95 for 1 pound of jellybeans how much would she pay for 12 pounds
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She would pay $59.4. You multiply $4.95 by 12
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4 years ago
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Solve Systems by Substitution<br> 2x+5y=-3<br> x+8y=4<br> and<br> 2x+y=7<br> x-2y=-14
ASHA 777 [7]
2x + 5y = -3 ⇒ 2x +   5y = -3 
1x + 8y =  4 ⇒ <u>2x + 16y = 8
</u>                               -<u>11y</u> = <u>-11 </u>
                                -11     -11
                                    y = 1
                        2x + 5(1) = -3
                            2x + 5 = -3
                            <u>      -5     -5</u>
                                  <u>2x</u> = <u>-8</u>
                                   2      2
                                    x = -4
                              (x, y) = (-4, 1)

2x + 1y = 7     ⇒ 2x + 1y = 7
1x -  2y = -14 ⇒ <u>2x  - 4y  = -28</u>
                                   <u>5y</u> = <u>35</u>
                                    5      5
                                     y = 7
                             2x + 7 = 7
                             <u>      -7   -7</u>
                                   <u>2x</u> = <u>0</u>
                                    2     2
                                    x = 0
                              (x, y) = (0, 7)
4 0
3 years ago
.<br> 1. Find the value or values of y in the quadratic equation y2 + 4y
BARSIC [14]
That the answer, I hope that will help you

6 0
3 years ago
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Show that KEYS is a square if K (-2, 4) ,E (4,2 ), Y(2,-4 ) ,S (-4, -2) are the co- ordinates of the vertices.
Lyrx [107]

Answer:

KEYS is a square

Showing as plotted and connected points

See the attached

4 0
3 years ago
What is the answer of this question ?
fgiga [73]

Answer:

the answer is B

Step-by-step explanation:

hoped I helped:)

6 0
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