9 is to 36 as 10 is to 40 -is how you should write the proportion 9:36 = 10:40 using words.
For the 1st one we need to solve x. x-y=2 step1: x-y+y=2+y answer: x=y+2
Answer:
8 years
Step-by-step explanation:
Let age of father be f
age of John be j
age of Alice be a
John's father is 5 times as old as John. We can write:
f = 5j
John is twice as old as Alice. We can write:
j = 2a
or
a = j/2
SUM OF ALL OF THEIR AGES (after 2 years) will be 58. We can write:
f+2 + j+2 + a+2 = 58
This becomes:
f + j + a + 6 = 58
f + j + a = 52
Now, we replace third equation with the first two (in bold) and get:
So John is 8 years old
Answer:
(x+2)(3x+1) are the factors
A={2,3,5}
B={1,3,4}
A∩B={3}
R: a. {3}