y = -2x2 + 10 y = -2x – 2

Step-by-step explanation:

hello :

y = -2x² + 10

y = -2x – 2

-2x²+10 = -2x-2

2x²-2x -12 = 0

x²-x-6 = 0

(x-3)(x+2)=0

x-3=0 or x+2=0

x=3 or x=-2

but  y = -2x-2

if ; x=3     y = -2(3)-2 =-8

if : x=-2     y=-2(-2)-2=2

two solutions : (3 , -8)  and (-2 , 2)

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.

3-4

step-by-step explanation:

the answer is 3-4 because both 45 and 60 has a multiple of 15.

45/3=15

60/4=15

therefore the odds against selecting a red is 4-3