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irinina [24]
3 years ago
5

Factor the following. ( Correct and best explained answer gets brainliest :)

Mathematics
1 answer:
Fittoniya [83]3 years ago
4 0
The answer is (x - 10)(x - 9).

Alright, so here is my thought process as I factored this out. 

The middle number, or second term, is the sum of the numbers within the parentheses after you factor. In this case, we had to get to -19.

Now, to figure out which two number are gonna add up to that, you need to figure out the factors of the last number in the equation, which is the constant. In this case, multiple choice tells us that 10 and 9 have got to be the factors of 90 we're looking for. 

Now, back to the first step. We have the numbers 10, 9, and -19. The only way to make 10 and 9 add up to -19 is by making 10 and 9 both negative. So -9 and - 10. 

Finally, you add the x's and the parentheses to make the lovely factored version of the equation: (x - 10)(x - 9)! :)
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can someone give me a good explanation of scientific notation. simple but smart. i’m in algebra 1 honors
Kaylis [27]

Answer:

Scientific notation is a way of expressing numbers that are too large or too small to be conveniently written in decimal form. It may be referred to as scientific form or standard index form, or standard form in the UK.

3 0
2 years ago
Which function is a quadratic function? F(x) =2x^2, g(x) =5x^3,k(x)=-x,b(x)=-9x^4
Katen [24]

Answer:

F(x)=2x^2

Step-by-step explanation:

Basically, a quadratic function has x^2 in it (standard form ax^2+bx+c with non-zero a). The others have x^3, -x, x^4, etc., which clearly are NOT x^2.

5 0
3 years ago
If e || f and a || b, what is the value of y. *
Blizzard [7]

Answer:

y = 90

Step-by-step explanation:

Since, e || f and a || b

Therefore, quadrilateral so formed is a rectangle.

Each angle of a rectangle is right angle.

\therefore \: y \degree = 90 \degree \\  \\  \huge \red{ \boxed{ \therefore \: y  = 90}}  \\  \\

3 0
3 years ago
Need help plzzz???!?????!
Shkiper50 [21]

Answer:

137

Step-by-step explanation:

First start with what you know.  The measure of the interior angles of a triangle total to 180^{o} so 51 + 2x + x = 180, then 51 + 3x = 180, 3x = 129, so

x = 43, the exterior angle is on a straight line with x so

x + exterior angle = 180 [since they are supplementary], since x = 43 then

43 + e = 180, so e has to be 137

8 0
2 years ago
Help me find the missing sides
andrew-mc [135]

Answer:

ab= 11 and bc = 8

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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