Y=10 because on the left X has to equal 30 in order for the angle to be 90 degrees. After that you take the X which is 30 and put it in the equation (2X+3Y) Now the line is a line which means that the angle containing (2X+3Y) must equal 90 like this (2X+3Y)=90 So plug in X [2(30)+3Y]=90 60+3Y=90 subtract the 60 and you get 3Y=30 divide 30 by 3 and you get Y=10 Hope this helped
5x^2 +7x -10
5x^2 (-6x + 13x) - 10
Answer:
Step three incorrectly factors
Step-by-step explanation:
Answer:
8k
Step-by-step explanation:
1. Simplify: -k + 8k
2. -k + 8k = 7k
Charlie has 5 times as many stamps as Ryan then C = 5R.
R + C = 1608.
So we plug in for C
R + 5R = 1608
6R = 1608
R = 268
Now find Charlie by plugging in and we get
268 + C = 1608
C = 1340
Lets check our answer
1340 = 5(268) yup we are right.