Answer:
11.7-11y
Step-by-step explanation:
3−4y+(−7y)+8.7
3-4y-7+8.7
11.7-4y-7y
11.7-11y
Answer:
C
Step-by-step explanation:
You need to isolate the y variable. The first thing you need to do is move the 2 and 3x to the other side of the equation.
3x + 1/5y - 2 = 0
1/5y = -3x +2
Then you need to get rid of the 1/5 so you multiply both sides equation by the reciprocal of 1/5 which is 5/1 or 5.
y = ( -3x +2) 5
then you distribute the 5 to get
y = -15x+10
Answer:
x=2
PT=7
Step-by-step explanation:
set up the equation like this: PT=TQ
(4x-1)=(2x+3)
calculate to find x
x=2
put x into the equation for PT
4(2)-1=7
Answer:
x=20
Step-by-step explanation:
We can use similar triangle to find x. Put the smaller triangle over the larger triangle.
11 10
-------- = ----------
121+11 10 +5x+10
Combine like terms
11 10
-------- = ----------
132 20+5x
Using cross products
11 (20+5x) = 132*10
Distribute
220 +55x = 1320
Subtract 220 from each side
220-220 +55x = 1320-220
55x = 1100
Divide by 55
55x/55= 1100/55
x =20
