Answer: 2-(2x+40) or (2x+40)-2
Step-by-step explanation: If you wanted to solve the problem, you have to do the stuff in the parentheses before you do the stuff out of the parentheses. In the parentheses, you will have to solve 2x before you do anything else. When you solve 2x, the answer to that, add it to 40. Then the answer in the parentheses, subtract it by 2 and you can get the answer.
There are two unknowns in this problem. To start, let's assign variables to each of them. Let x be the age of Jacob and y be the age of Isaiah. Then, we formulate equations based on the relationships stated.
x = 7 + y --> eqn 1
x + y = 63 --> eqn 2
Substituting eqn 1 to eqn 2, then solve for x and y:
(7+y)+y = 63
7 + 2y = 63
2y = 63 - 7
2y = 56
y = 56/2
y = 28
x = 28 + 7 = 35
Therefore, Jacob is 35 years old, and Isaiah is 28 years old.
Answer:
10 hotdogs for $5.00 is the better deal
Step-by-step explanation:
Let's find the price of 1 hotdog if 8 hotdogs cost $4.08.
$4.08 ÷ 8 = $0.51 per hotdog
Now let's find the price of 1 hotdog if 10 hotdogs cost $5.00.
$5.00 ÷ 10 = $0.50 per hotdog
$0.50 per hotdog is slightly cheaper than $0.51 per hotdog, so 10 hotdogs for $5.00 is the better deal.
The first step of solving this inequality is subtracting 3 to both sides. This will cancel 3 from the left side to start isolating x.
2x + 3 - 3 ≥ 17 - 3
2x ≥ 14
Hope this helped!
~Just a girl in love with Shawn Mendes
Answer:
92
Step-by-step explanation:
