3x+3=3y ⇒ 3y-3x=3 ⇒3(y-x)=3 ⇒ y-x=1
2x-6y=2 ⇒ 2(x-3y)=2 ⇒ x-3y=1
We must to collect two equations.
x's is lost;
y-3y=2
-2y=2
y=-1 ; x-3.(-1)=1 ⇒ x=-2
Answer is (-2,-1)
The converse of a mathematical statement involves simply switching the hypothesis and the conclusion, thus:
"If a triangle is isosceles, then it is equilateral."
Answer:
Third answer (she is incorrect because she should have squared each leg length and then found the sum.)
Step-by-step explanation:
The pythagorean theorem states that a²+b²=c². This is not equivalent to (a+b)²=c² (due to FOIL expansion, this expands to a²+2ab+b²=c²).
This matches with the third answer, as she has to do a² and b≥ separately.
**This question involves expanding perfect squares, which you may wish to revise. I'm always happy to help!
Answer:
22 miles
Step-by-step explanation:
Given data
A towing company charges $50 plus $4 per mile
let the number of miles be x
the expression for the charges for x miles y is given as
y= 50+4x
for y= 138
138= 50+4x
138-50= 4x
88= 4x
x= 88/4
x= 22 miles
Hence the distance is 22 miles
Answer:
G is the answer
Step-by-step explanation:
You have to subtract the two angles from 180, the total angle to get the third one.