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motikmotik
3 years ago
12

What are the x-intercepts of the quadratic function y=x^2-x-2

Mathematics
2 answers:
Rus_ich [418]3 years ago
3 0

Answer:

(-1,0) and (2,0)

Step-by-step explanation:

Factor to get (x+1)(x-2)=0

Make at least one of the (x1+x2) equations equal 0.

-1 and -2 make them 0, so they are the x intercept.

OlgaM077 [116]3 years ago
3 0

Answer:

(-1,0) et (2,0)

Step-by-step explanation:

Facteur: (x + 1) (x-2) = 0

une des équations (x1 + x2) = 0.

-1 et -2 font 0, alors ils sont x

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A basketball player made 75% of her free throws in 10 games. She had 36 free throw tries. How many did she make?
makvit [3.9K]
If she had 36 free throw tries and made 75% of them, you would multiply 36 by 0.75.  Percentages are really just parts out of 100, so 75 in decimal form would be 0.75 (out of 1.0).

36 x 0.75 = 27   ( the same as 3/4 of 36 )

So, the basketball player made 27 free throws.
5 0
3 years ago
Which equation is equivalent to 3[x + 3(4x – 5)] = 15x – 24?
makkiz [27]

Hello from MrBillDoesMath!

Answer:

x = 7/8

Discussion:

3[x + 3(4x – 5)] = 15x – 24 =>

3x + (3*3)(4x-5) = 15x - 24  =>

3x + 9*(4x) - (3*3)*5 = 15x - 24 =>

3x + 36x  - 45 = 15x - 24  =>   (add 24 to each side)

3x + 36x - 45 + 45 = 15x - 24 + 45 =>

39x = 15x + 21  =>                    (as 45-24 = 21)

39x-15x = 21 =>                        (subtract 15x from both sides)

24x = 21 =>

x = 21/24 = -7/8


Regards,  

MrB

P.S.  I'll be on vacation from Friday, Dec 22 to Jan 2, 2019. Have a Great New Year!


5 0
3 years ago
Read 2 more answers
Help please!!!!!! Thank you
ivolga24 [154]

Answer:

1/4

Step-by-step explanation:

Well see how far each points are from each other.

Start at the red triangle and go up 1, go to the right 4.

<em>Thus,</em>

<em>the rise/run is 1/4.</em>

<em />

<em>Hope this helps :)</em>

7 0
3 years ago
Read 2 more answers
Solve for Unknown: x/10=43/46.
sergey [27]

Answer:

9

Step-by-step explanation:

x= 430/46

x=9.35 approximately 9( nearest whole number)

4 0
1 year ago
HELPPPPPPPPP PLEASE!!! :(
erastovalidia [21]

Answer:

x = 25

Step-by-step explanation:

Given:

  • ∠A = ∠B    (Vertically opposite angles)
  • ∠A = (7x - 8)°
  • ∠B = (6x + 17)°

Since ∠A is equivalent to ∠B...

\implies (7x - 8)= (6x + 17)

Open the parenthesis:

\implies 7x - 8= 6x + 17

Add 8 both sides:

\implies 7x - 8 + 8= 6x + 17 + 8

Simplify both sides:

\implies 7x = 6x + 25

Subtract 6x both sides:

\implies 7x - 6x = 6x - 6x + 25

Simplify both sides:

\implies x = 25

7 0
2 years ago
Read 2 more answers
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