Advertisements
Advertisements
प्रश्न
If x2, 4 and 9 are in continued proportion, find x.
उत्तर
Given, x2, 4 and 9 are in continued proportion.
`("x"^2)/4 = 4/9`
⇒ 9x2 = 16
⇒ x2 = `16/9`
⇒ x = `4/3`
APPEARS IN
संबंधित प्रश्न
If Chameli had Rs 600 left after spending 75% of her money, how much did she have in the beginning?
If (3x – 4y) : (2x – 3y) = (5x – 6y) : (4x – 5y), find x : y.
If `"a"/("b + c") = "b"/("c + a") = "c"/("a + b")` , then prove that a(b - c) + b(c-a) + c (a - b) = 0
A woman reduces her weight in the ratio 7 : 5. What does her weight become if originally it was 84 kg?
Express the following ratios in its simplest form :
2.5 : 5
Find the duplicate ratio of `sqrt(5) : 7`
Choose the correct answer from the given options :
When the number 210 is increased in the ratio 5 : 7, the new number is
In an examination, the number of those who passed and the number of those who failed were in the ratio of 3 : 1. Had 8 more appeared, and 6 less passed, the ratio of passed to failures would have been 2 : 1. Find the number of candidates who appeared.
If the ratio of Green, Yellow and Black balls in a bag is 4 : 3 : 5, then
(a) Which is the most likely ball that you can choose from the bag?
(b) How many balls in total are there in the bag if you have 40 black balls in it?
(c) Find the number of green and yellow balls in the bag.
An alloy contains only zinc and copper and they are in the ratio of 7:9. If the weight of the alloy is 8 kg, then find the weight of copper in the alloy.
