Answer:
x=
1/2
and y=3
Step-by-step explanation:
Let's solve your system by substitution.
y=10x−2;2x+y=4
Step: Solvey=10x−2for y:
y=10x−2
Step: Substitute10x−2foryin2x+y=4:
2x+y=4
2x+10x−2=4
12x−2=4(Simplify both sides of the equation)
12x−2+2=4+2(Add 2 to both sides)
12x=6
12x
12
=
6
12
(Divide both sides by 12)
x=
1
2
Step: Substitute
1
2
forxiny=10x−2:
y=10x−2
y=10(
1
2
)−2
y=3(Simplify both sides of the equation)
Answer:
x=
1
/2
and y
One number is a, another one is b.
a+b=81
a-b=17
a+b+a-b=81+17
2a=98
a=49
b=32
So the two numbers are 49 and 32.
That's your answer.
Your answer is AB. Congruent is when two sides or a shape are equal.
76.5:100
because if you simplify 100,000 to 100 by diving by 1 k
then you can do the same and divide 76500 by 1k and get 76.5
