Answer:
-4
Step-by-step explanation:
3(-1)-1 PEMDAS
-3-1=-4
First you can solve for b: Subtract a on both sides and get 2b=-a+10, then divide by 2 to get b by itself and get: b=-1/2a+5
Then you can plug in this equation for b in the other: This would give you: 2a+-1/2a+5=6. Then you can use that equation to solve for a and get: 1.5a+5=6, subtract 5, 1.5a=1, divide by 1.5, a=1/1.5
Then you can plug in the value of a to solve for b.
Melissa will need 1.5 gallons of blue paint for each gallon of yellow paint.
Answer:
£2.10
Step-by-step explanation:
1.80 divided by .12 = .15
.15 times 7 = 1.05
1.05 divided by 3 = .35
.35 times 5 = 2.10
Answer:
0.23
Step-by-step explanation:
