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AysviL [449]
2 years ago
13

Express in completed square form x 2 + 6x + 20

Mathematics
1 answer:
podryga [215]2 years ago
7 0

Answer:

(x + 3)² + 11

Step-by-step explanation:

Given

x² + 6x + 20

To complete the square

add/subtract ( half the coefficient of the x- term )² to x² + 6x

x² + 2(3)x + 9 - 9 + 20

= (x + 3)² + 11

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A circle has a radius of 6 inches and a central angle of 60°. What is the measure of the arc length associated with this angle?
Readme [11.4K]

Answer:

2\pi

Step-by-step explanation:

first you take 60°/360°= 1/6   then you take 1/6 and multiple it by 2\pi and that equals \frac{\pi }{3}   finally take  \frac{\pi }{3}  times the radius (6) and that should equal 2\pi

PLATO USERS #platolivesmatters

6 0
2 years ago
Write a relationship for a function whose k(x) values are 5 more than four times the principal square root of x .
bearhunter [10]

Answer:

k(x)=5+4\sqrt{x}

Step-by-step explanation:

Write a function whose k(x) values are 5 more than four times the principal square root of x.

So,

the principal square root of x =\sqrt{x};

four times the principal square root of x =4\sqrt{x};

5 more than four times the principal square root of x =5+4\sqrt{x};

Thus,

k(x)=5+4\sqrt{x}

4 0
2 years ago
Can someone help?????
NeX [460]

mean would be adding them all up and dividing by how many there is mean median mode and range but the mean absolute deviation would be actually can't tell you cuz I don't know myself but you could probably look it up I wish you the best of luck

4 0
3 years ago
Using the method of substitution solve the problem need help completely loss if you can do it quickly it would help
miv72 [106K]
Equation 1)  y=x+3
Equation 2)  y=2x+5

Rearrange both equations so that (x) and (y) are on the same side.

1) -x+y=3
2) -2x+y=5

Subtract equations with each other.

x=-2

Plug in -2 for (x) in equation 1.

y=(-2)+3

Simplify.

y=1

(-2, 1)

~Hope I helped!~
3 0
2 years ago
What multiples to -35 but adds to 8
grandymaker [24]
Factors of 35:
1 and 35
5 and 7

Bad break for you, you're going to have to find some other way to factor your quadratic equation. Try the quadratic formula.
7 0
2 years ago
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