Answer:
Step-by-step explanation:
4/12 and 5/8 is 96
1/4 and 5/6 is 20
3/5 and 4/10 is 50
Answer:
x=7
Step-by-step explanation:
6x +2y=48
Let y=3
6x+2(3) = 48
6x+6 = 48
Subtract 6 from each side
6x+6-6=48-6
6x= 42
Divide by 6
6x/6 = 42/6
x = 7
So 9 Gallons a second is 2160 Quarts a minute
Answer:
Spelling word questions = 10
vocabulary word questions = 16
Step-by-step explanation:
Let
Spelling word questions = x
vocabulary word questions = y
Total points = 100
Total questions = 26
x + y = 26 (1)
2x + 5y = 100 (2)
From (1)
x = 26 - y
Substitute x = 26 - y into
2x + 5y = 100
2(26 - y) + 5y = 100
52 - 2y + 5y = 100
- 2y + 5y = 100 - 52
3y = 48
y = 48 / 3
= 16
y = 16
Substitute y = 16 into
x + y = 26
x + 16 = 26
x = 26 - 16
= 10
x = 10
Spelling word questions = 10
vocabulary word questions = 16
