Answer:
Step-by-step explanation:
3g + 2h = 3*7 + 2*5
= 21 + 10
= 31
Answer:
No, they are not the same.
Step-by-step explanation:
Lets say the price is 100 dollars. Lets start with the 25 and then 10 percent off. Since its 25% off we need to multiple the 100 dollar price by .75.
100*.75=75
Now that we have the 75 dollar price, we need to take off the 10%. We need to multiply the current price of 75 by .9
75*.9=67.5
The price after these 2 discounts is $67.50
Now lets do the 35% off right away. Since is 35% off we need to multiple our right of 100 by .65.
100*.65=65
The price after the 35% off is $65
So no, they are not the same.
Answer:
no they're not congruent angle side side No,no son congruents angle side side
Answer:
labor fee: $15.15, quart of oil: $1.25
Step-by-step explanation:
You solve this by setting up two equations, one for each car.
First we have to define what variables we need and what they mean.
To be solvable, you need as many equations as you have variables.
Let's call the labor fee x and the cost of oil per quart y.
This means we'll be needing two equations to have any chance of solving this. Since we have one equation per car, this looks promising!
Car 1: x + 5y = 21.4
Car 2: x + 7y = 23.9
To solve these, you combine them into one equation by eliminating one variable:
Rewriting the first: x = 21.4 - 5y
So, we can substitute 21.4 - 5y for x in the second. Then we have an equation with only y:
21.4 - 5y + 7y = 23.9
2y = 23.9-21.4 = 2.5
y = 1.25
Plugging this value back into the rewritten first gives us the labour fee:
x = 21.4 - 5*1.25 = 15.15
