Answer:
2,3 and the last one i believe
Step-by-step explanation:
Answer:
Mother: 40 years old
Rakhi: 15 years old
Step-by-step explanation:
Solution :
Let present age of Rakhi = x years
Present age of Mother = 4x
5 years later
Age of Rakhi =x+5
Ag of Mother =4x+5
Given 4x+5=3(x+5)
4x−3x=15−5
⇒x=10
Mother's age =4x=40 years
Plug 10 in for x to find Rakhis age
Answer:
--9x^3+12x^2-x-2
Step-by-step explanation:
(2-3x)(3x^2-2x-1)
6x^2-4x-2-9x^3+6x^2+3x
-9x^3+6x^2+6x^2+3x-4x-2
-9x^3+12x^2-x-2
Answer:
9
Step-by-step explanation:
Let the number be n.
Then: 4n + 15 = 6n - 3
Subtract 4n from both sides, obtaining: 15 = 2n - 3
Now add 3 to both sides, obtaining 18 = 2n. Then n = 9.
The area of 
equals to the sum of areas of the triangles it consists of. So,
