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Thepotemich [5.8K]
2 years ago
11

How would you complete the square on the left side of this equation? x^2-6x=15 A. Add 6 to both sides of the equation. B. Subtra

ct 6 from both sides of the equation. C. Add 9 to both sides of the equation. D. Subtract 9 from both sides of the equation. Please select the best answer from the choices provided A B C D
Mathematics
1 answer:
Illusion [34]2 years ago
3 0

Answer:

C. Add 9 to both sides of the equation.

Step-by-step explanation:

Given

x^2 - 6x = 15

Required

Complete the squares

We have:

x^2 - 6x = 15

---------------------------------------------

Take the coefficient of -6 i.e. -3

Square it (-3)^2 = 9

Add 9 to both sides

---------------------------------------------

<em>Hence, C is correct</em>

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The answer to this is d
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The main tank has a radius of 70 feet. What is the volume of the quarter-sphered sized tank? Round your answer to the nearest wh
Misha Larkins [42]
Volume of a sphere with radius of 70 feet is:
V =  \frac{4}{3} * \pi * r^{3}

where r is that radius

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8 0
2 years ago
Can you give me the answers to all of them, thank you
JulsSmile [24]
Answers:
22.)D
23.)D

How?
Explaining number 22:
Well, let’s disprove each one of them.
A.) A is saying 6x=7. Even if we simplify that, it wouldn’t make any sense in what we are trying to do. That equation is equal to x=0.86(estimated to nearest tenth)

B.) B says that 6x=3. When we simplify this, we get x=0.5. That isn’t the number we want, so we know B isn’t right

C.) C is equivalent to 2x+2=6. Let’s simplify since it is multi-step.
2x+2=6
2x=6
x=3
Since we want x to be six, this wouldn’t be the answer either.

D.) D is saying 2x=12. When simplified, this becomes x=6. BINGO THERE IS OUR ANSWER




Explaining 23:
For this, I also used process of elimination.

Remember that x is equal to 2.5

A.)
x+3=5.5

2.5+3=5.5
5.5=5.5
That works.

B.)
2x=5
2(2.5)=5
5=5
That works.

C.)
2.5/2=1.25
1.25=1.25
That works

D.)
x-10=7.5
2.5-10=7.5
-7.5=7.5
THAT DOESNT WORK THERE IS OUR ANSWER
5 0
3 years ago
Which shows the correct way to use the rule "multiply by the reciprocal" for the expression below? 5 divided by StartFraction 2
enot [183]

Answer:

its a.

Step-by-step explanation:

simple answer

5 0
2 years ago
Read 2 more answers
(1)<br> (2)<br> 790<br> + 172<br><br><br> What is the answer
VladimirAG [237]

Answer:

962

Step-by-step explanation:

8 0
2 years ago
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