All categories

4 years ago

What number must you add to complete the square x^2+2x=13

1 answer:

7 0

You must halve the linear coefficient and then square it. In this case:

(2/2)^2=1 so you must add 1 to both sides of the equation...

x^2+2x+1=14 now the left side is a perfect square...

(x+1)^2=14

You might be interested in

Help me please and thanks

Vesnalui [34]

This triangle is classified as a right triangle, because one of it's angles ihas a measurement of 90°

hope this helps

5 0

3 years ago

Read 2 more answers

Suppose that seven in ten couples disagree on a particular matter. What percent of couples disagree on the matter?

SpyIntel [72]

Answer: The percent of couples disagree on the matter=70%

Step-by-step explanation:

We have given that seven in ten couples disagree on a particular matter.

Thus, the ratio of couples disagree to the total couples= $\frac{7}{10}$

To convert it in percent we need to multiply it with 100, we get

The percent of couples disagree on the matter $=\frac{7}{10}\times100$

⇒The percent of couples disagree on the matter=70%

5 0

3 years ago

the starting salaries of individuals with an mba degree are normally distributed with a mean of $40,000 and a standard deviation

Zepler [3.9K]

ANSWER: Fifty-eight percent of the MBA students will earn at least a $34,000 staring salary.

3 0

2 years ago

What is - 3 1/8 x 1 3/5

Mekhanik [1.2K]

Answer:

-5

Step-by-step explanation:

Sorry if its wrong

7 0

3 years ago

Read 2 more answers

2(x+1)=38 I would just like to check my answer for this problem. I think x equals 16. But I would like to clarify

astraxan [27]

There are two methods to do this:

1. 2(x + 1) = 38

2*x + 2*1 = 38 (Expand the bracket)

2x + 2 = 38

2x = 36 (Subtract 2 from both sides)

x = 18 (Divide each side by 2)

2. 2(x + 1) = 38

(x + 1) = 19 (Divide each side by 2)

x = 18 (Subtract 1 from each side)

4 0

4 years ago

Read 2 more answers