X = 3
5(3) - 2 = 13
3(3) + 4 = 13
Answer:
45
Step-by-step explanation:
brainliest?
Answer:
($4.00/x)+($4.50/y)
Step-by-step explanation:
we know that
Apples cost 80 cents for x apples
so
One apple cost $0.80/x
Oranges cost 75 cents for y oranges
so
One orange cost $0.75/y
Find the cost of 5 apples and 6 oranges
Multiply the number of apples by the cost of one apple and multiply the number of oranges by the cost of one orange
so
5($0.80/x)+6($0.75/y)=($4.00/x)+($4.50/y)
Answer:
C = 20 + 0.001x
C = $20 + $0.001x
Step-by-step explanation:
Let x represent the number of minutes spent talking on the phone.
Given;
Fixed monthly charge F = $20
Charge per 10 minutes V = $0.01
Charge per minute = V/10 = $0.01/10 = $0.001
The equation to model the cost of a monthly cell phone bill;
Total cost = fixed cost + variable cost
C = F + (V/10)x
Substituting the values;
C = 20 + 0.001x
A composite number is any number that has factors besides itself and 1. In other words, a composite number is a number that you can divide to get a whole number, as long as you don't use the same number or the number 1 to divide it. It's easier to explain with the example above.
Let's work backwards, and start with 21. Can you divide 21 by 1? Obviously, yes, to get 21; but that doesn't count when you're trying to find a composite number. What about 2? That doesn't go in evenly. 3? 21/3=7, which is a whole number. Since it can be divided by a whole number other than 1 or 21, it's composite. See where I'm getting at?
What about 15? 15 divided by 2 isn't a whole number. But 15 divided by 3 is 5, so 15 is composite.
9 can't be evenly divided by 2. But 9 divided by 3 is 3! Another composite number.
What about 2? It can be divided by 1 and 2. But wait a second: 2 is itself! We can only divide 2 into 1 and 2. A number is only composite if it can be divided by something other than 1 or itself, which in this case is 2. So, 2 is NOT a composite number. We actually call it a PRIME number, because it's not composite!
Answer: 2
