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Elina [12.6K]
3 years ago
7

Solve x^2+10x+7=0 by completing the square.

Mathematics
1 answer:
melisa1 [442]3 years ago
8 0
The correct answer is number 2 I do believe.
You might be interested in
A textbook store sold a combined total of 460 physics and math textbooks in a week. The number of math textbooks sold was 62 les
sergij07 [2.7K]

Number of physics textbooks sold was 261 & number of maths textbooks sold was 199.

Let, the number of physics textbooks sold = x

According to the question,

The number of math textbooks sold was 62 less than the number of physics textbooks sold.

So, Number of maths textbooks sold = x-62

The textbook store sold a combined total of 460 physics and math textbooks in a week.

So, the equation becomes,

(x-62)+x = 460

⇒ x-62+x = 460

⇒ 2x-62 = 460

⇒ 2x = 460+62

⇒ 2x = 522

⇒ x = 522/2

⇒ x = 261

So, 261 physics textbooks were sold

(261-62) = 199 maths textbooks were sold.

Learn more about equation here :

brainly.com/question/27893282

#SPJ10

5 0
2 years ago
How is 3*7 and 6*7 related
coldgirl [10]

Answer:

3*7=21

6*7=42

so 3*7 is 1/2 of 6*7

Step-by-step explanation:

6 0
3 years ago
In a certain town there were 332 robberies last year. This year the number of robberies has gone down 14%. How many robberies we
Reptile [31]

Answer:  300

Step-by-step explanation:

Number of robberies last year was                          =  332

Percentage of reduction in the subsequent year    = 14%

Therefore,to know the decline amount, we find 14% of 332

                                                                                    = 14/100 x 332

                                                                                    = 46.48

Now to find out the number of robberies cases recorded this year, it will be

                                                                                   = 332 - 46.48

                                                                                   = 285.52

                                                                                  ≅ 300

6 0
4 years ago
Jeremy buy a new computer with 14 optional features some of the features cost $28.50 and some cost $110.99 he if he spent a tota
makkiz [27]

28.50x + 110.99(14-x)=811.45

distribute

28.50 x + 1553.86-110.99x =811.45

combine like terms

-82.49x+1553.86=811.45

subtract 1553.86 from each side

-82.49x =-742.41

divide by -82.49

x=9

He bought 9 of the 28.50 features and 5 of the 110.99 features

4 0
3 years ago
Someone helpppp<br> i dont have brain cells to do this rn
exis [7]
1) 3.2 x 10^9 2) 2.9 x 10^-10 3) 4.16 x 10^17
5 0
3 years ago
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