Question

(1)1/2 of 3/8 of a number is 21/5 of 20. What is the number?

(2)Three-fifths of the students in a school bring food from home while 140 do not. Find the number of students in the school.

(3) Adding double of a number to its fourth part gives 33/4 as the result. What is the number?

(4) Rahul has 75 marbles. In 10 rounds he lost 6 marbles each and in the next 5 rounds he gained 2 marbles each. How many marbles did Rahul have,
when the games ended?

(5)Simplity [-24-(-43)]+[25-{24 (-40)}]

(6)The length of a pole is 5.20m if 0.75 part of the pole is above the ground, what length of the pole is under the ground? ​

Answer 1

Answer:

5. [-24-(-43)]+[25-{24 (-40)}] = [-24+43]+[25– {24(–40)}]

☞ [-24+43]+[25–{24(–40)}] = [19]+[25–{–960}]

☞ [19]+[25–{–960}] = 19+[25+960]

☞ 19+[25+960] = 985+19

☞ 985+19 = 204.

1. 1/2 × 3/8 × (x) = 21/5(20)

☞ 3/16(x) = 84

☞ x = 84(16/3)

☞ x = 28.

hope this answer is helpful

please mark as the brainliest answer

please thank my math answers

have a great day ahead

Answer 2

Answer:

Kinetic energy is the energy which a body possesses by virtue of being in motion.