Answer:
y=18.2
Step-by-step explanation:
-3x+5y=22
-3(37-14)+5y=22
-69+5y=22
5y=91
y=18.2
check:
-3(37-14)+5(18.2)=22
-69+91=22
22=22
2/5 because if you subtract 5/5 of 3/5 it will give you 2/5
Answer:
20
Step-by-step explanation:
To solve this you have to make a system of equations.
Since the father and son's age sum up to 60, the first equation will be:
f + s = 60
Secondly, since the father's age is 5 times the age of the son 6 years ago the equation will be:
6 - (5s) = f
Now, you have to solve the first equation to let it equal to s
f + s = 60
f = 60 - s
Plug in
6 - 5s = 60 - s
+s +s
6 - 4s = 60
-6 -6
---------------------
-4s = 54
----- -----
-4 -4
s ≅ 14
14 + 6 = 20
25 is equal to 20% of 125
As the increase is 75 (200-125), you've then got to divide the increase by each part to find out how many times it increases.
75/25= 3
20*3= 60
Therefore, there is an increase of 60%
Hope this helps :)
Step-by-step explanation:
<h2><4 and <12 </h2>
<h2>O işareti bulamadım pardon. :( :)</h2>