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lesya [120]
3 years ago
13

The vertex of a parabola is (-2, -20), and its y-intercept is (0, -12).

Mathematics
2 answers:
ExtremeBDS [4]3 years ago
8 0
You are given the vertex first so then you plug in the vertex in the vertex form for a quadratic equation which is y=a(x-h)^2+k. After you plug it in, you should have the equation y=a(x+2)^2-20. You are also given another point (0,-12) You then plug in the coordinates and solve for a. After you find your a you simply input the a,h and k values and leave the x and y alone.
JulijaS [17]3 years ago
4 0

Answer:

The answer is y=2x^2+8x-12

Step-by-step explanation:

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Elina [12.6K]
STEP-BY-STEP SOLUTION:

= x^2 - 13x + 30

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= ( x - 10 ) ( x - 3 )

FINAL ANSWER:

Therefore, the answer is:

C. x - 10

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6 0
2 years ago
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A tree struck by lightning in a storm breaks and falls over to form a triangle with the ground. The tip of the tree makes a 36°
liraira [26]

Answer: approximately 49 feets

Step-by-step explanation:

The diagram of the tree is shown in the attached photo. The tree fell with its tip forming an angle of 36 degrees with the ground. It forms a right angle triangle,ABC. Angle C is gotten by subtracting the sum of angle A and angle B from 180(sum of angles in a triangle is 180 degrees).

To determine the height of the tree, we will apply trigonometric ratio

Tan # = opposite/ adjacent

Where # = 36 degrees

Opposite = x feets

Adjacent = 25 feets

Tan 36 = x/25

x = 25tan36

x = 25 × 0.7265

x = 18.1625

Height of the tree from the ground to the point where it broke = x = 18.1625 meters.

The entire height of the tree would be the the length of the fallen side of the tree, y + 18.1625m

To get y, we will use Pythagoras theorem

y^2 = 25^2 + 18.1625^2

y^2 = 625 + 329.88

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5 0
3 years ago
Y(a - b) = c(y + a);y
Alexandra [31]

​

Step-by-step explanation:

3x + 2y = 8

2y= -3x+8

y= -3/2x+4

so the answer is m= -

m=− 2

       3

​

8 0
3 years ago
Read 2 more answers
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Elanso [62]
41.40 ÷ 12 = 3.45
So if you are buying a yearly subscription it is $3.45 per issue.
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5 0
3 years ago
Help me asap i need it
s344n2d4d5 [400]

Answer:x = 56

Step-by-step explanation:

180-(60+64)=56

6 0
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