CBSE > Class 09 > Mathematics | CBSE Board | Homework Help

Average speed = total distance/total time Since we don't have both distance and time so, Let distance be x km so total distance = 2x Then, total time = x/30 + x/50 = 4x/75 Now, Average speed = 2x/ 4x/ 75 =37.5 km/h. I hope this will help you ?.

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Find the remeinder when x³+3²x²+3x+1 divided by 5+2x

Posted by Divay Rohaj 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Himanshu Jeengar 5 years, 3 months ago

Divide it and get the answer??

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If (2*)6

Posted by Mehak Nagpal 5 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Subbaiah Samayyam 5 years, 3 months ago

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Shakti Sarkar 5 years, 3 months ago

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3root 4,root 3,3root 6 in ascending order

Posted by Jatashankar Sharma 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Jatashankar Sharma 5 years, 3 months ago

Yeh kese solve honga please explain

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3 coins are tossed once. Find the probability of at most two head

Posted by Chetana Patel 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Gaurav Seth 5 years, 3 months ago

Total number of coins tossed = 3.

Total number of outcomes n(S) = 8.

Let A be the event of getting at most 2 heads.

= > n(A) = {HHT,HTH,THH,TTH,THT,HTT,TTT} = 7

Required probability P(C) = 7/8

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Simplify 6_4root 3 apone me 6+4root 3

Posted by Jatashankar Sharma 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Gaurav Seth 5 years, 3 months ago

Q: 6-4√3/6+4√3

Explanation is as follows:

On rationalizing,

=6-4√3×6-4√3/6+4√3×6-4√3

=36+48-48√3/36-48

=84-48√3/-12

=12(7-4√3)/-12

=-(7-4√3)

=4√3-7

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2(7+5)

Posted by Ritika Shaw 5 years, 3 months ago

CBSE > Class 09 > Mathematics

7 answers

Subbaiah Samayyam 5 years, 3 months ago

2(7+5)=2(12) =12×2 or 2×12 =24

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Aakanksha Akku 5 years, 3 months ago

2(7+5) 2*7 + 2*5 14 + 10 24 Ans.

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Shreeya Chauhan 5 years, 3 months ago

14+10, 24

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Mix Gaming 5 years, 3 months ago

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Rakshana Shree 5 years, 3 months ago

2*7+2*5. =24

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Pranav Nagpal 5 years, 3 months ago

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Ritika Shaw 5 years, 3 months ago

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Find the value of A and B so that 2x Cube + x square + X + b has X + 2 and X 2 X -1 X Factor as factor

Posted by Vikash Kumar 5 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

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Find the area of triangle whoes perimeter is 60 cm its one side is 25.5 cm and the other two sides are such that one is 10.5 cm longer than the other

Posted by Hema Dwivedi 5 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

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What is the 0 of the zero polynomial?

Posted by Lalitnandan Behera 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Sia ? 5 years, 3 months ago

The constant polynomial whose coefficients are all equal to 0.

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If a to the power x =bc, b to the power y = ca and c to the power z = ab, show that xyz = x + y + z + 2

Posted by Lalitnandan Behera 5 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

( a square - a) whole square - 8(a square - a ) +12 =?

Posted by Shivangi Pandey 5 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

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Find the value of a and b if 11+root 7÷11- root 7 =a+b root 7

Posted by Aarya Aarya 5 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

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Find it without using identity(99)3

Posted by Hridayananda Deka 5 years, 3 months ago

CBSE > Class 09 > Mathematics

4 answers

Ritika Shaw 5 years, 3 months ago

970299

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Shakti Sarkar 5 years, 3 months ago

970,299

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M M 5 years, 3 months ago

297

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Purab Khetan 5 years, 3 months ago

(99)3=99.3= 297

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One trapezium it's height is 40 and upper side base is18.5 and lower sidebase is 51.10 find its square metre

Posted by Sachin Sharma 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Jatt Editor 5 years, 3 months ago

Pta nai

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The angles of a triangle are (x-40),(x-20)and (x/2-10) then find x

Posted by Bushra Ahsan 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

M M 5 years, 3 months ago

since the angles of a triangle sum up to 180° hence x-40+x-20+x/2-10= 180 2x - 70 +x/2= 180 (4x- 140 +x)/2 = 180 4x - 140 + x = 180× 2 5x - 140 = 360 5x = 360 + 140 x = 500/5 x = 100

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Represent root 41 on number line

Posted by .. . 5 years, 3 months ago

CBSE > Class 09 > Mathematics