The ratio between the ages of Amar and Kabir is 3:4 at present. after 4 years ago their ages would be 7:9.ratio of ages of Kabir and amar after 20 years from now?

Step-by-step explanation:

Represent Amar age with x

Represent Kabir age with y

So, we have:

Presently

After 4 years

Simplify both ratios:

Cross Multiply

Make x the subject

Cross Multiply

Open Brackets

Collect Like Terms

Substitute for x in

Substitute 32 for y in

So, in 20 years time, the ratio of the ages would be:

This gives

Divide by 4

Hence, the Ratio is

45 degres

step-by-step explanation:

sorey if i hav bad engelish im bad engelish

answer is 8x+24

area of vanessa's patio = length × width

given, length = (3x² + 5x + 10)

width = (x² - 3x - 1)

area of vanessa's patio = (3x² + 5x + 10)(x² - 3x - 1)

= 3x²(x² - 3x - 1) + 5x(x² - 3x - 1) + 10(x² - 3x - 1)

= 3x⁴ - 9x³ - 3x² + 5x³ - 15x² - 5x + 10x² - 30x - 10

= 3x⁴ - 4x³ - 8x² - 35x - 10

hence, expression of vanessa's patio = (3x⁴ - 4x³ - 8x² - 35x - 10)