Hello,
Answer A
Let's the width of the rectangle
2a-5 its length
Teh half perimeter is 80/2=40
a+2a-5=40 ==>3a=45==>a=15 and 2a-5=30-5=25
Answer:
4 11/40 hope this helps :)
Step-by-step explanation:
Answer:
Lines 2 and 4 are perpendicular
Step-by-step explanation:
Line 2: 4y=3x-4
y=3/4x - 1
Line 4: 4x+3y=-6
3y=-6-4x
y=-2 - 4/3x
The two lines are perpendicular since -4/3= - (inverse of 3/4)
Answer:
4 minutes and 25 seconds (4.25)
Step-by-step explanation:
153/36
Answer:
(x, y) = (4, 3)
Step-by-step explanation:
The second equation gives an expression for y that can be substituted into the first equation.
... 2x -3(x -1) = -1 . . . . put x-1 where y was
... -x +3 = -1 . . . . . . . simplify
... 4 = x . . . . . . . . . . . add x+1
Using that second equation, we can find y to be ...
... y = 4 -1 = 3
The solution is (x, y) = (4, 3).
