Let's solve this problem step-by-step.
STEP-BY-STEP SOLUTION:
We will be using simultaneous equations to solve this problem.
Let's establish the two equations we will be using to solve the problem.
Let Andrew's current age = a
Let Andrew's son's current age = s
Equation No. 1 -
a = 3s
Equation No. 2 -
a - 10 = 5s
To begin with, we will substitute the value of ( a ) from the first equation into the second equation to solve for ( s ).
Equation No. 2 -
a - 10 = 5s
( 3s ) - 10 = 5s
3s - 5s = 10
- 2s = 10
s = 10 / - 2
s = - 5
Next we will substitute the value of ( s ) from the second equation into the first equation to solve for ( a ).
Equation No. 1 -
a = 3s
a = 3 ( - 5 )
a = - 15
FINAL ANSWER:
Therefore, the present age of Andrew is - 15 and the present age of Andrew's son's is - 5.
It isn't possible for someone to be negative years old, but this is the answer that I ibtained from the equations.
Hope this helps! :)
Have a lovely day! <3
Answer:
r = <u>A</u><u> </u><u>-</u><u> </u><u>p</u>
pn
Step-by-step explanation:
A = P(1 + nr)
A = P+ Pnr
pnr = A - p
r = <u>A</u><u> </u><u>-</u><u> </u><u>p</u>
pn
Answer:
2m × <u> 100 </u> = <u> 200 </u>cm
Step-by-step explanation:
well the prefix <em>centi</em> means 100, and if you want to know how many <em>centi</em>meters are in a meter, then you should multiply by 100
so
2m × <u> 100 </u> = <u> 200 </u>cm.
Answer:
Point 1: (6.4, 117)
Point 2: (6.6, 120)
Step-by-step explanation:
((x²)/(4y-²))^(-1/2) =
(x².4y²)^(-1/2) =
(4x²y²)^(-1/2) =
1 / (4x²y²)^(1/2) =
1 / \/(4x²y²) =
1/2xy