Eq. 1 .10x + .25y = 9.45
Eq. 2 x + y = 60 rewrite as x = 60 - y and substitute into equation 1.
.10(60 - y) + .25y = 9.45
6 - .1y + .25y = 9.45
6 + .15y = 9.45
.15y = 3.45
y = 23
60 - 23 = 37
23 quarters
37 dimes
23* .25 = 5.75
37 * .1 = 3.70
5.75 + 3.70 =9.45
Answer:
Movie cost $3.5 and the video game cost $5.5
Step-by-step explanation:
Given data
Let the cost of movies be x
and the cost of video game be y
12x+2y= 53----------1
and
3x+5y= 38-----------2
solve 1 and 2
12x+2y= 53X 5
3x+5y= 38 X2
60x+10y= 265
- 6x+10y= 76
54x= 189
x= 189/54
x= $3.5
put x= 3.5 in 1
12(3.5)+2y= 53
42+2y= 53
2y= 53-42
2y= 11
y= 11/2
y= $5.5
Hence the movie cost $3.5 and the video game cost $5.5
Answer:
18
Step-by-step explanation:
xy + 4 = 40
xy = 40 - 4
xy = 36
What two numbers can b multiplied to give 36? Then add them.
9 + 4 = 13
18 + 2 = 20
6 + 6 = 12
12 + 3 = 15
The odd option is 18
Answer:
A
Step-by-step explanation:
Answer:
Q1. 1050 miles
Q2. 1h 30m
Step-by-step explanation:
Q1. 1h = 300 miles
3h = 3.5 × 300 miles
= 1050 miles
Q2. 68km = 1h
102km = × 1h
= 1.5h
= 1h 30m