The correct answer is d. 8.6602
Answer:
14 and 6
Step-by-step explanation:
Let's start by naming the first number x.
We can name the second number y.
We can set up equations to model our situation.
x+y=2x-8
x-y=2y-4
Let's simplify the equations.
x+y=2x-8
Subtract 2x from both sides
-x+y=-8
__________
x-y=2y-4
Subtract 2y from both sides.
x-3y=-4
Add the two equations together to eliminate x.
x-3y=-4
-x+y=-8
________
0x-2y=-12
-2y=-12
Divide both sides by -2.
y=6
The second number is 6.
Plug that back in.
x+6=2x-8
Subtract x from both sides
6=x-8
Add 8 to both sides
x=14
The first number is 14
Like a first step bc. there is a denominator this will be more usefully eliminate it so what you can make it multiplied both sides by 2
- so will get
-2/2x +2*3/2 = 2(-4x+7)/2
(-2x +6)/2 = 2(-4x+7)/2 common denominator the 2 so make the numerators equal and solve for x
-2x+6=-8x+14
6x=8
hope helped
Answer:
38.(D)
Step-by-step explanation:
Diameter=2R
Which gives u 19+19= 38
a) substitution (refer to statements 1 and 2)
b) definition of supplementary
c) subtraction property of equality
