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galina1969 [7]
3 years ago
9

The equation of a line is x = -4. Will this produce a horizontal, vertical, or diagnol line?

Mathematics
1 answer:
Nuetrik [128]3 years ago
3 0
Vertical because the line passed through -4 on the x axis
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The diameter of a circle is 7 cm. What is the circumference of the circle?( Use π = 22/7) *
andrew11 [14]

Answer:

2πr

2(22/7)(3.5)

<u>22</u>

Step-by-step explanation:

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3 years ago
Jose works out at a gym. He rides a stationary bike for a certain amount of minutes and walks on a treadmill for a certain amoun
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3 years ago
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Which are equivalent to 3
Studentka2010 [4]

Answer: 9/12 is equivalent to 3/4.

Explanation: 3 times 12 = 36 and 4 times 9 = 36.

Hope this helps!

5 0
2 years ago
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The distance of a golf ball from the hole can be represented by the right side of a parabola with vertex (-1,8). The ball reache
ddd [48]

Answer:

Let's suppose that the hole is at y = 0m, where x is the time variable.

we know that:

The vertex is (-1s, 8m).

(i suppose x in seconds and y in meters)

At x = 1s, the ball reaches the hole, so we also have the point:

(1s, 0m).

Remember that the vertex of a quadratic equation y = a*x^2 + b*x + c is at:

x = -b/2a,

then we have:

-1 = -b/2a.

Then we have tree equations:

8m = a*(-1s)^2 + b*-1s + c

0m = a*(1s)^2 + b*1s + c

-1s = -b/2a.

First we should isolate one variable in the third equation, and then replace it in one of the other two:

1s*2a = b.

So we can replace b in the first two equations bi 1s*2a.

8m = a*1s^2 - 1s*2a*1s + c

0m = a*1s^2 + 1s*2a*1s + c

We can simplify both equations and get:

8m = a*( 1s^2 - 2s^2) + c = -a*1s^2 + c.

0m = a*(1s^2 + 2s^2) + c = a*3s^2 + c.

Easily we can isolate c in the second equation and then replace it into the first equation:

c = -a*3s^2

The first equation becomes:

8m = -a*1s^2 - a*3s^2 = -a*4s^2

a = 8m/-4s^2 = -2m/s^2.

Now with a, we can find the values of c and b.

c = -a*3s^2 = -(-2m/s^2)*3s^2 = 6m.

b = 1s*2a = 1s*(-2m/s^2) = -2m/s.

Then the equation is:

y = (-2m/s^2)*t^2 + (-2m/s)*t + 6m

5 0
3 years ago
During the past year, Mrs. Singh purchased 37 books at a wholesale club store. She purchased softcover books for $5.50 each and
ozzi

Answer:

x+y=37-------(1)

5.5x+13.5y=355.5-----(2)

Put x=37-y in eqn 2

5.5(37-y)+13.5y=355.5

203.5-5.5y+13.5y=355.5

8y=152

y=19

x=18

Step-by-step explanation:

5 0
3 years ago
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