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3 years ago

Hey can you please help me posted picture of question

Mathematics

1 answer:

Snezhnost [94]3 years ago

3 0

The equation for a parabola can also be written in the "vertex form":
y = a (x - h) ^ 2 + k
In this equation, the vertex of the parabola is the point (h, k).
We have then:
y = a (x - (-5)) ^ 2 + -2
Substituting the given point:
2 = a (-4 - (-5)) ^ 2 + -2
Clearing a:
2 = a-2
a = 4
Answer:
a = 4
option B

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3 years ago

Consider the equations 15x + 9y = 45 and 9x + 8y = 12. Solve the system of equations using elimination. Give your solution to th

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Answer:

(-5.77, 6.46)

Step-by-step explanation:

15x + 9y = 45 ----------- i

9x + 8y = 12----------------ii

Multiply equation i by 9 the coefficient of x in equ ii

And equation ii by 15 the coefficient of x in equ I

9 x 15x + 9y = 45 ----------- i

15 x 9x + 8y = 12----------------ii

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135x+120y= 180

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135x-135x+81y-(+120y)= 405-180

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15x+9(-5.77) = 45

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x = 96.92/15= 6.46

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x = 6.92/15

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3 years ago

If a cone shaped vase can hold 45 cubic centimeter of water and has a radius of 2 centimeters what is the height of the vase use

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Answer:

The height of the vase is $h=10.75\ cm$

Step-by-step explanation:

we know that

The volume of a cone is equal to

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we have

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substitute and solve for h

$45=\frac{1}{3}(3.14)(2)^{2} h$

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$h=10.75\ cm$

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3 years ago

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