Answer:
The mother is 40 years old and the son is 16 years old.
Step-by-step explanation:
With a system of equations mentioned in the statement the answer can be reached, we have to:
Let X be the age of the mother, Y the age of the son.
X + Y = 56 (1)
X-10 = 5 * (Y-10) (2)
Solving
X -10 = 5 * Y - 50
From where:
X = 5 * Y - 40
Substituting in the first equation:
5 * Y - 40 + Y = 56
6 * Y = 56 + 40
Y = 96/6 = 16
Now, replacing the value of Y:
X = 5 * 16 - 40
X = 80 -40
X = 40
Therefore the mother is 40 years old and the son is 16 years old.
OMG I see that BTS sticker on your laptop--
Robert paid $4,603.6 in Social Security.
Robert total earnings:
$5,805 at Young's Grocery.
$12,445 at A&B Restaurant.
$56,002 at CCD Communications.
So his total earnings are of:
5805 + 12445 + 56002 = $74,252
How much did Robert pay in Social Security?
6.2%, that is, 0.062 of $74,252. So
0.062*74252 = $4,603.6
Subtract the numbers
3/4 (48-16)=4(4 + 2x)
3/4(32)=4(4+2x)
Multiply the numbers
3/4x32=4(4 + 2x) Remember 3/4 is equal to .75
24=4(4 + 2x)
Rearrange terms
24=4(2x + 4)
24=8x+16
Subtract 1 6 from both sides of the equation
24-16=8x+16-16
8=8x+16-16
8=8x
Divide both sides of the equation by the same term
<u>8=8x</u>
8 8
Simplify
1=<u>8x</u>
8
Cancel terms that are in both the numerator and denominator
1=x
Move to the left
x=1
g(2a) = 4a² - 2
substitute x = 2a into g(x) , that is
g(2a) = (2a)² - 2 = 4a² - 2