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lions [1.4K]
4 years ago
14

Find the error in this problem.

Mathematics
1 answer:
SpyIntel [72]4 years ago
4 0

I believe it is that your supposed to add the roots before finding the square root

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What number should be added to both sides of the equation to complete the square
Vesna [10]

Answer:

36

Step-by-step explanation:

You take 1/2 the linear term's coefficient and square it.

The linear term is the term that contains just an x and a number -- in this case 12x

Take 1/2 12 = 6

and square it

6^2 = 36

So when you've done that you should get

x^2 + 12x + 36 = 11 + 36

x^2 + 12x + 36 = 47

5 0
3 years ago
What is the diameter of a circular swimming pool with a radius of 8 feet?
Alenkasestr [34]
We know that,

diameter is twice the radius, I.e d = 2r

Now d = 2(8)ft = 16 feet
5 0
3 years ago
60 points!!! Please answer immediately and the entire page please I will also give you five stars
Nataly_w [17]

Answer:

Step-by-step explanation:

9.  Correct, D

-3Y + 9X <= 12

3Y - 9X => -12

3Y => -12 + 9X  

Y => -4 + 3X  

10.  D

11.  D

12.  Correct, B

13.  Correct, E

14.  A

15.  B

5 0
3 years ago
Can someone help me with this
abruzzese [7]

Answer:

c

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8 0
3 years ago
The half-life of a radioactive isotope is 10 years. About how long would it take 5 grams of the isotope to decay until there wer
valkas [14]

Answer:

Option A. 10 years

Step-by-step explanation:

we know that

Half-life (t^{\frac{1}{2}}) is the amount of time required for a quantity to fall to half its value as measured at the beginning of the time period.

In this problem  (t^{\frac{1}{2}}) of a radioactive isotope is 10 years, which means that after 10 years half of the sample would have decayed and half would be left as it is.

After 10 years ( first half life) 5/2 = 2.5 g decays and 2.5 g remains left

8 0
3 years ago
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