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Lana71 [14]
3 years ago
13

Solve by the linear combination method (with or without multiplication).

Mathematics
1 answer:
iris [78.8K]3 years ago
8 0
I hope this helps you

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What is the equation written in vertex form of a parabola with a vertex of (–1, 8) that passes through (1, 0)?
Archy [21]

Answer:

y = -2(x + 1)^2 + 8

Step-by-step explanation:

The equation of a parabola can be written in the form;

y = a(x-h)^2 + k

where a is the multiplier (h,k) is the vertex

so h = -1 and k = 8

Plug in these values

y = a(x + 1)^2 + 8

So to get the value of a, we use the point where the parabola passes through which is the point (1,0)

Simply substitute the values of x and y

0 = a(1 + 1)^2 + 8

0 = a(2)^2 + 8

-8 = 4a

a = -8/4

a = -2

So therefore the equation of the parabola is ;

y = -2(x + 1)^2 + 8

7 0
3 years ago
Determine the intercepts
SpyIntel [72]

is there more ???????

6 0
3 years ago
a man is standing on top of a cliff, 80 high, the angle of depression to a boat is 60° . calculate the distance of the boat from
Maurinko [17]

Answer:

20 :3

Step-by-step explanation:

Da distance is 20

80 - 60 = 20 BOOM PEEPS

3 0
3 years ago
When 25 is added to a number the result is 59 less than 4 times the number.
marin [14]
X - the number

The expression:
x+25=4x-59

The solution:
x+25=4x-59 \\
x-4x=-59-25 \\
-3x=-84 \\
x=\frac{-84}{-3} \\
x=28

The number is 28.
6 0
3 years ago
Read 2 more answers
5y + 3= 14<br><br>pleaseeeee help ​
MrRa [10]

Answer:

5y + 3= 14

subtract 3 from each side

5y=11

divide each side by 5

5y/5=11/5

y=11/5 or 2.2 or 2 1/5

Hope This Helps!!!

3 0
2 years ago
Read 2 more answers
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