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Bingel [31]
3 years ago
15

X^2+6X=16 is a quadratic equation what are the solutions?

Mathematics
2 answers:
Makovka662 [10]3 years ago
7 0
x^2+6x=16\\\\ (x+3)^2-9=16\\\\ (x+3)^2=5^2\\\\x+3=5 \ or x+3=-5\\\\ x=2\\\\or x=-8 
IgorC [24]3 years ago
4 0
The answer is 2,-8.
But I am not sure. Hope this will help you!
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How many triangles can be formed with the angle measures: 20, 70, and 90 degrees?
sveta [45]

Answer:

A right triangle with degrees 20, 70, 90.

Step-by-step explanation:

6 0
2 years ago
Please help!!!!!! ASAP!!!
Kitty [74]

Answer:

B. po ang answer sa palagay ko lang po

6 0
2 years ago
The length of a rectangle is three times its width. if the area of the rectangle is 75 in2, find its perimeter.
UkoKoshka [18]

Answer:

  40 in

Step-by-step explanation:

For a width of w, the length is 3w and the area and perimeter are ...

  A = LW = (3w)(w) = 3w^2

  P = 2(L+W) = 2(3w +w) = 8w

We are given the area, so we can find w to be ...

  75 in^2 = 3w^2

  25 in^2 = w^2 . . . . . divide by 3

  5 in = w . . . . . . . . . square root

Then the perimeter is ...

  P = 8w = 8(5 in) = 40 in

7 0
2 years ago
A recent survey was conducted to compare the cost of solar energy to the cost of gas or electric energy. Results of the survey r
Mariana [72]

Answer:

c) at most 11.1%

Step-by-step explanation:

We have the data that is 97 ± 12, with 97 being the mean and 12 the standard deviation.

Now, the percentage of people who reached them for less than 73 dollars, if it were a normal distribution:

z = (73 - 97) / 12 = - 2

so it would be, a probability of 0.0228 or 0.228%.

But we don't know what distribution it has, but we can get an idea.

A and D discarded, as they are very high values, and 73 is well below the average.

B) is still a very high value.

Therefore the answer is C, at most 11.1%

4 0
3 years ago
PLEASE HELP ME!!!! i dont get this at all
daser333 [38]
Just divide the number that is biggest by 2 and you should get the answers for example #1 10÷2=5, #2 1÷2=0.5 #3 0.01÷2=0.005
5 0
3 years ago
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