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taurus [48]
3 years ago
6

Solve using the quadratic formula. x 2 + 4 x + 7 = 0

Mathematics
1 answer:
Tom [10]3 years ago
7 0

Answer:

x=-2+i√ 3

Step-by-step explanation:

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strojnjashka [21]
Scalene and right, since:

There is a right angle
and scale means that there are no angles that are the same.
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3 years ago
PLEASE HELP ME IN THESE TWO QUESTIONS ASAP! AND YES, I AM GOING TO MARK YOU AS THE BRAINLIEST ANSWER!!!!! 
Sladkaya [172]
The line from the point to its reflection should be perpendicular.If we imagine a line from (5,7) to (2,2), it would have a slope of (2-7)/(2-5) = 5/3.

For that line to be perpendicular to y=-2/5x+6, their slopes should be each other's negative reciprocals.

-2/5 negative reciprocal is 5/2, which is not equal to our calculated 5/3, so (2,2) cannot be the reflected point. Evan was wrong.

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6 0
3 years ago
Solve for c: c+8=-11c
UNO [17]

Answer:

c= -2/3

Step-by-step explanation:

c+8 = -11c

C = -11c -8

c+11c = -8

12c = -8

divide both sides by 12

c= -2/3

7 0
3 years ago
Read 2 more answers
I really don’t know what to do someone help ASAP
-BARSIC- [3]

Answer:

5.5

Step-by-step explanation:

The volume of a sphere is represented by the formula 4/3πr^3. So, if we set 4/3πr^3 equal to 2048/3, we can start solving. Start by multiplying both sides by 3/4, the reciprocal of 4/3 to get rid of the fraction. This gives us πr^3 = 512. Divide 512 by π to get 163.1 (when rounded to the nearest tenth). This leaves us with r^3 = 163.1; find the cubic root of 163.1, which is 5.5, to get r

(a more exact answer is 5.4631958645870141851784948846314‬)

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3 years ago
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A person invested \$8,700$8,700 in an account growing at a rate allowing the money to double every 15 years. How long, to the ne
jenyasd209 [6]

Answer:21.13208319 =21.1

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3 years ago
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