X-3
X/9
X+7
X*4
17-2x
6x+15
3x+2y
X-10
5(x+3)
4(x/2)
Answer:
Step-by-step explanation
- Let x be the number of adults and y the number of kids
We can then write this two equations :
x+y= 33
15x+7y= 311
- let's solve the two eaquations
to do that we should combine them both in a way that help us get rid of one of the variables.
Let's multiply the first equation by -7 to get rid of y by adding it to thr second equation
-7x-7y= -231
now add both equations .
15x+7y-7x-7y=311-231
we get : 8x = 80
as you notice y is gone and we get a classic easy equation to solve
x= 80/8
= 10
so the number of adults is 10
let's go back to the first equation ( x+y= 33) and replace x with 10
10+y= 33
y= 33-10
=23
let's check using the second equation :
(10*15)+(23*7) = 311
that is true
so :
- the number of adults is 10
- the number of kids is 23
2.5 hours. You take the total amount of kilometers and divide it by the kph (kilometers per hour), which in this case is 11. If you do that, you'll get your answer of 2.5 hours or 2 hours and 30 minutes.
Answer:
63 + 10
Step-by-step explanation:
when you do parenthesis and the number is next to another one with no symbol you multiply so 4-2 = 2 2 x 5 = 10 giving you 63 + 10
Answer:
They need $2655 to raise to cover the costs of the printing and meet their goal.
Step-by-step explanation:
Given:
The football team is selling raffle tickets as a fundraiser.
It costs them $155 to print the tickets, and they would like to make at least $2,500 profit.
Now, to find money they need to raise to cover the costs of the printing and meet their goal.
Let the fund raised be dollars.
So, money spent in printing ticket =$155.
Thus, money left =
The profit they would like to make at least = $2500.
According to question:
Adding both sides by 155 we get:
Therefore, they need $2655 to raise to cover the costs of the printing and meet their goal.