Let f and s be the ages of the father and the son. We have
From the first equation we derive
Substitute this expression for f in the second equation and we have
The solutions to this equation are s=5 or s=37
Since the sum of the ages must be 42, the solutions would imply
We can only accept the first solution, since the second would imply a son older than his father!
Multiply everything together in each question = and you’ll get your answer
Hope this helps!
Solve your equation step-by-step.
3(x+1)=−2(x−1)−4
Simplify both sides of the equation.
3(x+1)=−2(x−1)−4
Simplify:
3x+3=−2x−2
Add 2x to both sides.
3x+3+2x=−2x−2+2x
5x+3=−2
Subtract 3 from both sides.
5x+3−3=−2−3
5x=−5
Divide both sides by 5.
5x/5 = −5/5
x=−1
Answer: Jose
Step-by-step explanation: Because 2/3 is the same as 8/12
Answer:
The formula to find the surface area of a sphere is to take the radius of the sphere and square it and multiply that amount by pi and then multiply that by 4. This is written algebraically as S=4πr2, where S is the surface area, r is the radius, and the value of π is 3.14.
