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3241004551 [841]
2 years ago
8

Suppose Y varies directly as X, and Y=21 when X=3. Find X when Y=42

Mathematics
1 answer:
finlep [7]2 years ago
6 0

Answer:

can you make it more clear

Step-by-step explanation:

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Write the equation of the parabola in vertex form.
givi [52]

Answer: -9 = a(1 - 3)² + 3

Step-by-step explanation:

Vertex Form Equation:

y = a(x - h)² + k

vertex: (h, k) which means

h = 3

k = 3

because your vertex is (3, 3).

Your point is (1, -9) which is (x, y).

This means

x = 1

y = -9

Now, plug everything into your Vertex Form Equation:

-9 = a(1 - 3)² + 3

That’s your equation and final answer, but of course, if you need to, you can solve for a if you need to.

If a is positive, the parabola opens up. If a is negative, the parabola opens down.

Hope this helps!

3 0
3 years ago
Flower bed has the shape of a rectangle 24 ft long and 9 ft wide what is the area in square yards
natali 33 [55]
The answer is 24 square yards
24ft=8yd
9ft=3yd
So 8*3=24 square yard

Hope this helps
6 0
3 years ago
Read 2 more answers
Round to 2 SF 18.9 pls its urgent​
lawyer [7]
Rounding 2 SF would give you 19
8 0
3 years ago
Using the Following Image, solve for x
OlgaM077 [116]

Answer:

x = 2

Step-by-step explanation:

x + 1 + 4 = 2x + 3

x + 5 = 2x +3

x + 2 = 2x

2 = x

x = 2

5 0
2 years ago
Read 2 more answers
Solve by the substitution method.
GalinKa [24]

Answer:

The unique solution to the system is (x,y){(-9,-3)}

Step-by-step explanation:

x - y = -6     equation 1

5x + 6y = -63     equation 2

We will find the value of x from equation 1.

x= y-6

Now put the value of x in equation 2.

5(y-6)+6y = -63

5y-30+6y = -63

Combine the like terms:

5y+6y= -63+30

11y = -33

Divide both sides by 11.

11y/11 = -33/11

y = -3

Now put the value y = -3 in x=y-6

x = y-6

x= -3-6

x= -9

Therefore The unique solution to the system is (x,y){(-9,-3)} ....

7 0
3 years ago
Read 2 more answers
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