Mira picked two numbers from a bowl. The difference of the two numbers was 4, and the sum of 1/2 of each number was 18. The system that represents Mira’s numbers is below.
x – y = 4
1/2x + 1/2y = 18
Which two numbers did Mira pick?
10 and 8
18 and 4
20 and 16
40 and 32

answer: ♡♡♡♡♡♡♡♡♡♡

step-by-step explanation:

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

2 apples

step-by-step explanation:

taking away equals subtraction. 6-4=2