Answer:
x
=
(23
+
√
497 /
8)
, (23
−
√
497 /8)
x=5.66168710
Step-by-step explanation:
im too lazy. use math-way
Step-by-step explanation:
=(y-y1)=Y2-Y1/X2-X1(X-X1)
Answer:
The answer is Rectangular
Step-by-step explanation:
Answer:
function
Step-by-step explanation:
Answer:
Present age
Son: 15
Father: 45
Step-by-step explanation:
Remark
Thank you for the translation. Without it, the problem would be impossible -- at least for me.
Givens
Let the present age of the father = x
Let the present age of the son = y
Solution
x + y = 60
How many years will pass? You could say it's z.
x + z = y When z years pass, the son will be his father's present age.
x + z + y + z = 120 when z is added to both their current ages, the result is 120 Collect like terms
x + y + 2z = 120
<u>x + y = 60 </u> Subtract The very first equation
2z = 60 Divide by 2
z = 60/2 30 years have passed.
z = 30
x + z = y
x + 30 = y Substitute x + 30 for the present y value (the father).
x + x + 30 = 60
2x = 30
x = 15
x + y = 60
15 + y = 60
y = 60 - 15
y = 45
So the son's age right now is 15
The father's age right now is 45
