The goal of all algebra equations is to isolate the variable. In 3 step you should first make sure both variables are on the same side. To do that make sure you use the inverse.
For example:
6a + 9 = 3a + 15
because 3a is positive you're going to want to subtract it.
6a + 6 = 3a + 15
-3a -3a
_______________
3a + 6 = 15
Now it's a 2 step equation and you solve it on from there.
There are 10 possible ways to select a president from the club, because their are 10 available members to choose from.
After a president is chosen, their are 9 possible ways to select a vice president, because one of the members will already have the position of president, so they can't be vice president (10-1=9)
Now we just multiply to possibilities of presidents by the possibilities of vice-presidents.
president*vicepresident=
10*9=90
Answer= D. 90
Answer:
?= 103
Step-by-step explanation:
Your question isn't very clear but i will try to help you anyways. I think you're calculating ? which is the unknown(x) right? So i will be answering that
1? - 2 - 101 =0
1?-2= 0 + 101
1?= 101 +2
1?= 103
?= 103/1
?= 103
Answer:
D
Step-by-step explanation:
I know the answer is D because I set the equation to be equal to x.
First, I added c to both sides. The equation looked like: 7x=k+c
Then, I divided 7 on both sides, so x would be by itself. The equation looked like x=k+c/7
In conclusion, the answer is D. x=k+c/7
Answer:
Right triangles
Step-by-step explanation:
A rectangle has 4 right angles (90°). If you cut the rectangles diagonally, you will create the triangles containing one of those right angles each.
