Answer:
a=2.48
c=9.52
Step-by-step explanation:
a+c=12
4a+7.5c=72.5 Given
a+c=12
-4a-7.5c=-72.5 multiply the equation by negative 1
-3a-6.5c=-60.5 simplify
-3a=-60.5+6.5c add 6.5c to both sides
a=-20.17+2.17c divide it by 3
now you would take that equation and plug it into an equation you already have since you have something to plug in for a, the easiest one to do is a+c=12
(-20.17+2.17c)+c=12 plug in the equation
-20.17+3.17c=12 simplify by solving for c
3.17c=30.17 add 20.17 to both sides
c=9.52 divide both sides by 3.17
now since you have found c, you can plug it in to you equation to solve for a now (use the ones from the second step). I am using the equation a+c=12.
a+9.52=12 plug in the variable and solve for a
a=2.48 subtract 9.52 to both sides
a=2.48
c=9.52
Answer:
B
Step-by-step explanation:
1+1=2
But 2x has to stay the same
Answer:
The answer is C
Step-by-step explanation:
An isosceles triangle has two angles that measure the same, so...
30 + 30 = 60
180 - 60 = 120
No
____________
45 + 45 = 90
180 - 90 = 90
No
____________
60 + 60 = 120
180 - 120 = 60
Yes
____________
90 + 90 = 180
No
Your answer would be y=5/3x+8
