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hichkok12 [17]
3 years ago
6

Help! Identify a, b, and c in the following quadratic equation 2x2+24=−4x.

Mathematics
2 answers:
Sergeeva-Olga [200]3 years ago
8 0

Answer:

This is not a quadratic equations

pickupchik [31]3 years ago
6 0

Answer:

The values of a=2,b=3,c=7. Step-by-step explanation: Given : Quadratic equation . To find : Identify the values of a,b and c in the given quadratic equation? Solution : The general form of the quadratic equation is . Where, a is the coefficient of . b is the coefficient of x. c is the constant term. Now, we compare the given quadratic equation ...

Step-by-step explanation:

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In a certain neighborhood, there's a sagging power line between two utility poles. The utility poles are 50 feet tall and 120 fe
e-lub [12.9K]
<h3>Answer:  33.75 feet</h3>

In fraction form, this value is equal to 135/4

33.75 ft is equivalent to 33 ft, 9 inches.

===============================================

Explanation:

Refer to the diagram below.

The key point to start with is point H, which is the vertex of the parabola.

Recall that vertex form is

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

What we'll do is plug in the vertex (h,k) = (60,30) which is the location of point H. We'll also plug in (0,45) which is the y intercept, aka the location of point C.

So,

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

y = a(x-60)^2 + 30 .... plug in vertex

45 = a(0-60)^2 + 30 .... plug in y intercept coordinates

45 = a(-60)^2 + 30

45 = a(3600) + 30

45 = 3600a + 30

45-30 = 3600a

3600a = 15

a = 15/3600

a = 1/240

This then means:

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

y = (1/240)(x-60)^2 + 30

This is the equation of our parabola. Plug in x = 30 to determine the height of point K

y = (1/240)(x-60)^2 + 30

y = (1/240)(30-60)^2 + 30

y = (1/240)(-30)^2 + 30

y = (1/240)(900) + 30

y = 15/4 + 30

y = 15/4 + 120/4

y = 135/4

y = 33.75

Therefore, the height of the power line, when it is 30 feet away from one of the poles, is 33.75 feet. This is the y coordinate of point K.

Side note: 33.75 ft = 33 ft + 0.75 ft = 33 ft + 12*0.75 in = 33 ft + 9 inches

8 0
2 years ago
A cylinder and its dimensions are shown. One equation for calculating the volume of a cylinder is V = Bh , where B represents th
qaws [65]

Answer:

Step-by-step explanation:

To break down the volume even more, the base of a cylinder is pi(r)^2

Instead of V=Bh use V=pi(r)^2h (it's broken down more so it's easier to understand)

So just plug in the values to make B:

B=pi(r)^2

B= pi(8.3)^2

8 0
3 years ago
Read 2 more answers
Add the two expressions. 8k + 4 and 3k + 8 Enter your answer in the box.
GREYUIT [131]

Answer:

11k +12

Step-by-step explanation:

8k + 4 and 3k + 8

Combine like terms

8k + 4 + 3k + 8

8k+3k + 4+8

11k +12

4 0
3 years ago
A cylinder has a radius of 6 inches and a height of 2 feet. Which of the following should be done first in order to find the vol
zvonat [6]
The significant components, the radius and the height, are in inches and feet respectively, you'd need to convert them both to the same unit, whichever it may be, meters or feet or inches or millimeters, so long is the same, then use the volume of a cylinder equation to get it.
7 0
3 years ago
For what value of y must QRST be a parallelogram?<br> A: 1<br> B: 2<br> C: 3<br> D: 0.5
Reika [66]

Answer:

A

Step-by-step explanation:

Diagonals of a parallelogram bisect each other.

3x = 3

x = 1

y = x

y = 1

8 0
3 years ago
Read 2 more answers
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