<span>10x - 3(2x + 5)
= </span><span>10x - 6x - 15
= 4x - 15
answer
</span><span>a) 4x - 15</span>
The total number of gallons of paint needed for the big room is 3x and the number of gallons of paint needed for the small room is 2y.
3x + 2y = 16
Given the sizes of the room, the relation should be that,
x = 2y
Solving the equation,
3(2y) + 2y = 16
y = 2
Therefore x is equal to 4 gallons.
With the condition that only the bigger room is painted, the number of gallons of paint used should be 12 gallons and what is left should be 4 gallons.
Answer:
y = 541
Step-by-step explanation:
The mean is calculated as
mean = 
Mean of set A = 
= 
= 266
ratio between means = 7 : 12, then
mean of set B = 
× 266 = 456 , thus
= 456 ( multiply both sides by 5 )
1739 + y = 2280 ( subtract 1739 from both sides )
y = 541
Answer:
C.
Step-by-step explanation:
10 cups divided by 4 containers = 2.5 or 5/2 cups per 1 container
Answer:
B. y=2t-3
Step-by-step explanation:
First rewrite the parametric equation.
f(x)= y = at + b
Once arranged you get
2x - y =3
2x - 3 = y
f(x) = y = 2x - 3
Replace x with t, x = t
