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Alenkinab [10]
2 years ago
14

Which is the best step to do next to solve the equation by completing the square?

Mathematics
2 answers:
expeople1 [14]2 years ago
8 0

Answer: the correct answer is 9(x2+6x+9)=103 so it’s d

Step-by-step explanation:

Did it on edgunity

julsineya [31]2 years ago
7 0

Answer:

its D on edg

Step-by-step explanation:

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Please help. 10 points. Please do not guess. Guesses will be reported.
Alex73 [517]

The inscribed angle theorem says that

m\angle CAB=\dfrac12m\angle COB

Triangle AOC is isosceles because both AO and CO are radii of the circle and have the same length. This means angles CAO and ACO have the same measure and are congruent.

Angles ACO and COD are congruent because they form an alternating interior pair between the parallel lines AC and OD.

Taking all these facts together, we have

m\angle COB=2m\angle COD

and since angle COB is made up of angles COD and DOB, these angles must be congruent, and so the arcs they subtend (CD and DB, respectively) must also congruent.

3 0
3 years ago
Simplify.<br><br> 4n + 12 + 7n<br><br> A. 4 n + 19<br> B. 23 n<br> C. 16 n + 7<br> D. 11 n + 12
Darina [25.2K]

Answer:

D. 11n + 12

Step-by-step explanation:

You can simplify the 4n + 7n to be 11n by adding them together.

This means the answer is 11n + 12.

8 0
1 year ago
Read 2 more answers
What is the maximum height of of Anna's golf ball? The equation is y=x−0.04x2.
elena-s [515]

Given:

The height of a golf ball is represented by the equation:

y=x-0.04x^2

To find:

The maximum height of of Anna's golf ball.

Solution:

We have,

y=x-0.04x^2

Differentiate with respect to x.

y'=1-0.04(2x)

y'=1-0.08x

For critical values, y'=0.

1-0.08x=0

-0.08x=-1

x=\dfrac{-1}{-0.08}

x=12.5

Differentiate y' with respect to x.

y''=(0)-0.08(1)

y''=-0.08

Since double derivative is negative, the function is maximum at  x=12.5.

Substitute x=12.5 in the given equation to get the maximum height.

y=(12.5)-0.04(12.5)^2

y=12.5-0.04(156.25)

y=12.5-6.25

y=6.25

Therefore, the maximum height of of Anna's golf ball is 6.25 units.

7 0
3 years ago
You are saving money for a new phone. You must have at least $800 saved up in
NeX [460]

Let number of hours needed to work = x

Multiply number of hours by rate: 15x

Add what you already have saved:

15x + 215

This needs to equal at least 800:

The equation becomes:

15x + 215 >= 800

Solve for x:

15x + 215 >= 800

Subtract 215 from both sides

15x >= 585

Divide both sides by 15

X >= 39

They have to work at least 39 hours.

6 0
3 years ago
Choose the best estimate for the mass of a raisin.
sammy [17]

Answer:

A) 0.2g

Step-by-step explanation:

{.}

7 0
1 year ago
Read 2 more answers
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