x + y = 12
Equation 2: Difference:
x - y = 4
Solution:
x + y = 12
x - y = 4
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Add the two equations together:
2x = 16
Divide both sides by 2:
x = 8
Solve for y:
Use equation 1 substituting for x:
x + y = 12
8 + y = 12
Subtract 8 from both sides:
y = 4
Answer:
one number is 8 and the other number is 4.
8 + 4 = 12
8 - 4 = 4
<h2>
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Answer:
$7897.50
Step-by-step explanation:
using both compound interest and simple interest, they will need to pay $7897.50 by the end of a year
Answer:
$9.47
Step-by-step explanation:
Add all her purchases together
97.62 + 22.95 + 14.78 = 135.35
The total tax is 6.5% sales tax, and 0.5% country tax
6.5% + 0.5% = 7%
Multiply the total amount spent by the total tax
Remembering that you need to convert the 7% into an integer, by simply diving by 100 first
135.35 * 0.07 = 9.47
Answer:

Max is 4 days.
Step-by-step explanation:
An inequality is a math statement with more the one solution. The solution has a range of values for which the inequality can be satisfied. It has the same following components as an equation: variables and operations. However, the equal sign is replaced by an inequality sign:
.
We start by choosing a variable for an unknown value. Here is it the number of days he rents the car. We choose d.
We know he rents it for $21 pr day or 21d for any number of days. We also know her will drive 250 miles at $0.10 per mile or 0.10(250). We will combine the two into an expression.
21d + 0.10(250)
We know his limit is $115. This means he can rent the car for any number of days until he reaches $115. The charge must be less than or equal to 115.
So we write
.
To find the number of days he can rent the car, we solve for d using inverse operations.

This means Jim can rent the car up to 4 days. The 5th day will put the cost over $115.
Answer:
-8.05
Step-by-step explanation:
In order to solve for C you first have to subtract 17.6 from both sides.
2c=(6/4)-17.6
6/4 is 1.5
1.5-17.6=-16.1
2c=-16.1
c=-8.05