Mira picked two numbers from a bowl. the difference of the two numbers was 4, and the sum of one-half of each number was 18. the system that represents mira’s numbers is below. 1/2x – 1/2y = 4 x + y = 18 which two numbers did mira pick?

x=20 and y=16

Step-by-step explanation:

Let the two numbers be x and y

Difference of two numbers was 4 that is:

      (1)

And sum of one-half of each number was 18 that is:

          (2)

For  solving equation (1) and (2) we substitute x=4+y in equation (2) we get:

After simplification by taking LCM of the fraction we get:

After further simplification we get:

Now, substitute y=16 in x=4+y we get:

x=4+16=20

Hence, x=20 and y=16

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation:

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24