Pair the equivalent fractions.
1.
1/3
2.
1/2
3.
2/5
a.
3/6
b.
6/15
c.
4/12
need answer

1. c      2. a     3. b

Step-by-step explanation:

The best way to prove these results are the right ones is by multiplying diagonally :

1.  1/3 = 4/12  > 1 . 12 = 12  ; 3 . 4 =12

2.  1/2 = 3/6 > 1 . 6 = 6  ;  2 . 3 = 6

3.  2/5 = 6/15 > 2 . 15 = 30  ;  5 . 6 = 30

The results of the multiplications must be the same if the fractions are equivalent.

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

the answer is c.

step-by-step explanation: