Questions Archive - Page 423 of 432

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Deepak BoraNewbie

Asked: July 15, 2020In: CBSE, ICSE

The monthly pocket money of Ravi and Sanjeev are in the ratio 5 : 7. Their expenditures are in the ratio 3 : 5 . If each saves Rs.80 every month, find their monthly pocket money.

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ratio and proportion

2

Deepak BoraNewbie

Asked: July 15, 2020In: CBSE, ICSE

The ratio of boys to the number of girls in a school of 560 pupils is 5 : 3 . if 10 new boys are admitted , find how many new girls may be admitted so that the ratio of the number of boys to the number of girls may change to 3 : 2

2

ratio and proportion

0

Deepak BoraNewbie

Asked: July 15, 2020In: CBSE, ICSE

If the angles of a triangle are 2 :3 : 4 , find the angles.

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Ratio and proportion

0

Deepak BoraNewbie

Asked: July 15, 2020In: CBSE, ICSE

If (x-9) : (3x+6) is the duplicate ratio of 4 : 9 , find the value of x .

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Ratio and proportion

0

Deepak BoraNewbie

Asked: July 15, 2020In: ICSE

if (4x^2 + xy ) : (3xy – y^2) = 12 : 5 ,find (x+2y) : (2x+7)

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Ration and proportion

1

Deepak BoraNewbie

Asked: July 15, 2020In: ICSE

if A : B = 1/4 :1/5 and B : C =1/7 : 1/6 ,find A : B : C

1

Ratio And Proportion

0

Deepak BoraNewbie

Asked: July 14, 2020In: CBSE, ICSE

Prove that : cosec^6θ -cot^6θ = 3 cot^2θcosec^2θ +1

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Prove this standard identity using algebraic identity (a+b)³=a³+b³+3ab(a+b) : cosec^6θ -cot^6θ = 3 cot²θcosec²θ +1.

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Deepak BoraNewbie

Asked: July 14, 2020In: CBSE, ICSE

Prove that : cotθ+cosecθ-1/cotθ-cosecθ+1 = 1+cosθ/sinθ

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Prove this Trigonometric identity : Read more

0

Deepak BoraNewbie

Asked: July 14, 2020In: CBSE

If the 3rd and the 9th terms of an A.P. are 4 and − 8 respectively. Which term of this A.P. is zero.

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this is question number 9 exercise 5.2 NCERT Maths solutions, chapter arithmetic progression

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Deepak BoraNewbie

Asked: July 14, 2020In: CBSE

Check whether -150 is a term of the A.P. 11, 8, 5, 2, …

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use formula last term= a+(n-1)d, to check -150 is a term of the A.P. 11, 8, 5, 2, ….

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