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In direct proportion, `(a_1)/(b_1)` __________

asked Jan 17, 2022 in 8th-maths

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The variable x varies directly as y and x = 80 when y is 160. What is y when x is

asked Jan 17, 2022 in 8th-maths

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If x varies inversely as y and y = 60 when x = 1.5. Find x. when y =

asked Jan 17, 2022 in 8th-maths

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From the following table, determine if x and y are in direct proportion or not. x 4 7 10 16 y 24 42 60 96

asked Jan 17, 2022 in 8th-maths

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Shabnam takes 20 minutes to reach her school if she goes at a speed of 6 km/h. If she wants to reach school in 24 minutes, what should be her

asked Jan 17, 2022 in 8th-maths

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Ms. Anita has to drive from Jhareda to Ganwari. She measures a distance of 3.5 cm between these villages on the map. What is the actual distance between the villages if the map scale is 1 cm = 10

asked Jan 17, 2022 in 8th-maths

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Pattern B consists of four tiles like pattern A. Write a proportion involving red dots and blue dots in pattern A and B. Are they in direct proportion? If yes, write the constant of proportion.

asked Jan 17, 2022 in 8th-maths

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The students of Anju’s class sold posters to raise money. Anju wanted to create a ratio for finding the amount of money her class would make for different numbers of posters sold. She knew they could raise Rs 250 for every 60 posters sold. (a) How much money would Anju’s class make for selling 102 posters? (b) Could Anju’s class raise exactly Rs 2,000? If so, how many posters would they need to sell? If not,

asked Jan 17, 2022 in 8th-maths

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Find the area of a rhombus whose one side measures 5 cm and one diagonal as 8

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A covered wooden box has the inner measures as 115 cm, 75 cm and 35 cm and thickness of wood as 2.5 cm. The volume of the wood

asked Jan 17, 2022 in 8th-maths

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Ramesh has three

asked Jan 17, 2022 in 8th-maths

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Volume of a cylinder with radius h and height r is

asked Jan 17, 2022 in 8th-maths

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The surface area of a cuboid formed by joining face to face 3 cubes of side x is 3 times the surface area of a cube of side

asked Jan 17, 2022 in 8th-maths

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The area of a rectangular field is 48 `m^2` and one of its sides is 6m. How long will a lady take to cross the field diagonally at the rate of 20

asked Jan 17, 2022 in 8th-maths

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The thickness of a hollow metallic cylinder is 2 cm. It is 70 cm long with outer radius of 14 cm. Find the volume of the metal used in making the cylinder, assuming that it is open at both the ends. Also find its weight if the metal weighs 8 g per

asked Jan 17, 2022 in 8th-maths

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A wooden box (including the lid) has external dimensions 40 cm by 34 cm by 30 cm. If the wood is 1 cm thick, how many `cm^3` of wood is used in

asked Jan 17, 2022 in 8th-maths

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The following expressions are the areas of rectangles. Find the possible lengths and breadths of these rectangles. `x^2 – 6x +

asked Jan 17, 2022 in 8th-maths

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The following expressions are the areas of rectangles. Find the possible lengths and breadths of these rectangles. `76x^3yz^3 -:

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Factorise the expressions and divide them as directed: `(2x^3 – 12x^2 + 16x) -: (x – 2) (x –

asked Jan 17, 2022 in 8th-maths

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If `a^2 + b^2 = 74` and ab = 35, then find a +

asked Jan 17, 2022 in 8th-maths

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