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701.

luesecondpartRakhi's mother is four times as old as Rakhi. After 5 yeaas old as she will be then. Find their present ages..rs, her mother will be three time23.24. Monu's father is 26 years younger than Monu's grandfather and 29 years older than25. A man is 10 times older than hts grandson. He is also 54 years older than him26. The difference between the ages of two cousins is 10 years. 15 yearThe sum of the ages of all the three is 135 years. What is the ageof each one of them?present ages.ago, if the elder one wastwice as old as the younger one, find their present ages.

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express 33/-44 is standard form

702.

7. The mother is five times older thanher son. After 4 years, the sum oftheir ages will be 44 years. What isthe present age of the son?(a) 5 years (6) 6 years(c) 7 years (d) 8 years

Answer»

8 years is the answer to your question

the correct answer is 6years

6 years is the correct answer

Tumhe tumhari maa ki kasam like karo please like

Ans.Second option correct answer

like.......................l.....i..........k..........e

Eleyas Minj My answer is 8 and it was first answer. You replied that correct ans is 6 . Everyone else is saying that ans is 6 . No one is explaining. May be they have copied

6 year is correct.......

6 years is the correct answer

6 is the right answer

6 year is write answer

6 years is the correct answer of the given question

6 years is the correct answer

703.

Mr John has a son and a daughter, the son being 4 years older than the daughter. Fiveago, the age of Mr John was 23 years more than the sum of the ages of his son and daughter.After 18 years from now, the age of Mr John will be seventeen times the difference of ages ofhis son and daughter. Find their present ages.

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704.

The sum of ages of A and his father is 100. When A is as old as his father now,he will five times asold as his son B is now. B will be eight years older than A is now, when A is as old as his father. Whatare their present ages?18.

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705.

18.The sum of ages of A and his father is 100. When A is as old as his father now, he will five times asIfold as his son Bisnow. B will be eight years older than Ais now when Ais as old as his father. Whatare their present ages?allos, of lead and steel contains 60% lead. How much lead must be melted into it toBot

Answer»

LetLet age of Anup is x yrs

thus, Father's age= (100-x)

Anuj's age = (100-x)/5

Eq. 1 (Translating 2nd last line#)

(100-x)-x+(100-x)/5=x+8

600-11x=5x+40

16x=540

x =35 yrs

age of Anup is 35 yrs

age of Anuj is 13yrs

age of Anup's father is 65yrs

Note: Anup is A and Anuj is B

706.

1. Carry out the follo6(1) 36 + 42

Answer»

71/252 is the correct answer of the given

71/252 is the correct answer

71/252 is correct answer.

707.

8. If x be the mean proportional of x-2 and x+6 thenfind x

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thanks

708.

is 25 more than the smaller angle, find te3. Two adjacent angles add up to 145°. If the larger angle is 259 more than the smaller angle,find teangle.

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let the larger angle be X , so smaller angle will be x-25°

now adding both ===> x+x-25° = 145 => 2x= 145+25=> x = 170°/2 = 85°

so, the other angle Will be 85-25 = 60°

709.

sequlistgn from te Pous (2,5) and (3-3

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710.

Show that the progression 21, 16, 11,6,1, . is an AP, Write itsfiratand the common diference. Which term of this AP İs-547

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711.

te633

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712.

Present VI 3 on the numberte.

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713.

tethe following limits in Exercises 1 to 22., lim x +33. limr2ral

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1.

lim (x+3) x-->3

put x = 3

3+3 = 6

2.

lim x - 22/7x--> pi

put x = pi

pi - 22/7 , not 0 as 22/7 is approximate value of pi

3. lim pi r²x --> 1

pi × 1²

pi

714.

Paits of(4)Four years ago, Rahim's age was three times Ramu's age. After twoyears, it would just be double. What are their ages now?

Answer»

The present age of Rahim (x) = 22 years.The present age of Ramu (y) = 10 years.

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715.

2+4+6+........ +2n=n(n+1)

Answer»

2+4+6+.....+2n

=2(1+2+...+n)=2*n(n+1)/2=n(n+1)

Hence Proved

method of induction

716.

0l tiem?25, A man is 10 times older than his grandson. He is also 54 years older than him. Fiund tinpresent ages

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thanks

717.

Elsa's mother is 5 times older than her. Elsa's age 5 years from now will beone-third her mother's age. Find their present ages.

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Explanation : Suppose Elsa's age is E and her mother's age is is M so M = 5E (E+5) = (M+5)/3 3E + 15 = M + 5 3E + 15 = 5E + 5 2E = 10 E = 5 M = 5*5 = 25

Solution : Elsa's age 5 years and her mother's age 25 years.

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718.

line ementjoin, ndpond》 ( 5-6)(-(,-+) . A18。thead"Jtho point 어 inkY & echo-n'

Answer»

If you like the solution, Please give it a 👍

719.

Ankit is 30 years older than his son in7 years he will be 3 times bind theirPresent age

Answer»

Let age of Ankit = xThen,Age of Ankit father = x + 30

After 7 yearsAnkit age = x + 7Ankit father age = x + 37

As per given conditionx + 37 = 7(x + 7)x + 37 = 7x + 497x - x = 49 - 376x = 12x = 12/6 = 2

Therefore,Present age of Ankit = 2 yearsPresent age of Ankit father = x + 30 = 2 + 30 = 32 years

720.

44. Find:(i)2670% ofて5007.5% of 60 kg.(iii) 12% of 800(iv)% of 87(v)5. Find tho(ii) 0.25% of 96(vi) 9% of 5 litresExample

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721.

5) Angle Measure1)Find tho measure of each angle in degroes2)ExercisesRefer to the figure at the right02. Name the ndes ofADCExerciesALGEBRA La the igure OP aud OR are opposite rays.QS bisects por

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722.

Find the value of x in the folloot6 361 tho mean proportional

Answer»

7/6 = x/36

x = (7 × 36)/6

x = 7 × 6

x = 42

723.

6. The 6th and 17th terms of an A.P. are 19 and 41 respectively, find the 40th term.lo tho 1gth t

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724.

(A) 3(B) 4(D) 7(c) 5(E) of these50. Study the following pattern and replacthe question mark.(A) 9(C) 6(E) of these(B) 11(D) 7REF/THO/Class

Answer»

Answer is Option- B11as in last the number is half of the sum of all the remaining number

for an example

6= (4+3+5/2)= (12/2)5= (7+2+1/2)= (10/2)please like the solution 👍 ✔️

725.

S. If pth term of an AP. is g and the gth term is p,thenits rth term is :

Answer»

Let first term be a and common difference be d.

pth term = a + (p-1)d = q -----(i)

qth term = a+ (q-1)d = p -----(ii)

(ii) - (i) gives

(q - p)d = p - q or d = -1

(i) gives a = q - (p-1)d = q - (p-1)(-1) = q + p - 1

Hence,

rth term = a + (r-1)d = q + p -1 + (r-1)(-1) = q + p -1 + r +1 = p + q - r

726.

The mth term of an A.P. is n and the nth term is m. Find the rth term of the A.P.

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727.

If the pth term of an AP is q and the qth term is p, prove that its rth term is ptq-r.

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728.

2. rth term of a + 2b, a - b, a 4b,is :

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Explanation : First term = a + 2b difference = a - b - a - 2b = -3b nth term = first term + (n-1)*difference rth term = first term + (r-1)*difference = a + 2b + (r-1)*(-3b) = a + 2b - 3rb + 3b = a + 5b - 3rb = a + (-3r+5)b

Answer : a + (-3r+5)b

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729.

If a, denotes the rth term of an AP., show that

Answer»

thanks

kindly solve it please!

730.

18. If the pth term of an A.P. is q and qth term is p, prove that the rth term isp+q-r19/ Prove that the product of the 2nd and 3rd terms of an A.P. exceeds the product of the

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731.

Show that the sequence whose having rth term a, -2n*+n+l is not an A.P.

Answer»

an = 2n² + n +1 a1 = 2(1)²+1+1 = 4. a2 = 2(2)² + 2 +1 = 11. c.d1 = 11-4 = 7a3 = 2(3)² + 3+1 = 22 cd2 = 22-11 = 11

here common difference is not same i.e 7≠11

so, the sequence is not in A.P

732.

If une zero of 21-3x + k is reciprocal to the other, then the value of k is:23-3(0 2(a) 2(a) -3

Answer»

2x²-3x+k .............eq 1

Let the 2 zeroes be α & 1/α

Quadratic form : ax²+bx+c.........eq 2

On comparing eq 1 & eq 2 we get

a=2 ,b = -3, c= k

Product of zeroes = α × 1/α = 1

Product of zeroes= c/a

1= k/ 2

K= 2_____________________________The value of k is 2.

733.

\left( \begin{array} { | l | l | } \hline ? & { 27 } \\ \hline 15 & { 21 } \\ \hline \end{array} \right.

Answer»

33

734.

Give the graphical representation of the following equation.a)1.andb)On the Cartesian planeOn the number linex=33x + 5 = 0iii)y=4iv) 2x 9-v)Give the graphical representation of 2-11= 0 as an equation ini) one variable2.ii) two variables

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735.

IF 15-Lvstiatbus then find the values ofc a and

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736.

1. Which graphical representation helps in determining the mode of frequency distribution.

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Graphical RepresentationofFrequency Distribution. The statistics fromfrequency distributiontables can be showngraphicallyie in a histogram or pie chart. A histogram is a column chart.

737.

v) 3x+5=0Give the graphical representation) one variablef 2r-11 0 as aii) two variablesn equation in

Answer»

1) 2x-11 = 0

=> x = 11/2

2) 2x+0y -11 = 0

=> 2x+0y = 11

738.

une nunlo

Answer»

prime numbers are2,3,5,7,11,13,17,19,23,29

2,3,5,7,11,13,17,19,23,29

739.

The area of a square field is 334.89 m². Find the length of one side or une nera,

Answer»

area of sqaure = side²

334.89 = side²

side = √(334.89) = 18.3

18.3 is thr answer....

18.3 is thr answer......

740.

Q. 17. Find the value of :Xune+-X356

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741.

SOmeasure or une ruui agies or a closed rigure are 100°.78.999 and 60°. Check whether hisfigure is a quadrilateral or not.

Answer»

Answer: it is not a quadrilateral.

Step-by-step explanation: The total degree of angles in a quadrilateral should sum up to 360. So:

100+78+92+60 = 330

So it is not a quadrilateral.

100+78+92+60=330so it is not a quadrilateral

💯+78 +92+60=330this is not

100+78+92+60=330 so it's not a quadrilateral

742.

4. In a chemical compound, 34% of thecompound is chemical A, 26% of thecompound is chemical B, 17% of thecompound ispercentage is of chemical D. If the totalcompound is 15 L, what is the quantity ofchemicals A, B, C and D?chemical C and the remaining

Answer»
743.

In AABC, ZB 60°, 2C 40°, AL 1 BC and AD bisects △A such thatL and D lie on side BC. Find ZLAD.60°40%L DFig. Q. 1550-LLAD(: AD bisects ZBAC)]

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744.

uI SUITIe valué of angle AEvaluate the followingi)sin60° cos30sin30° cos60°5 cos 60°+4 sec30-tan 45°sin2 30° + cos 30°

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745.

In which quadrant the following points will lie?

Answer»

i)(2,-3) is in 2nd quadrant.

ii)(3,2) is in 1st quadrant

iii)(-5,-7) is in 3rd quadrant

iv) (5,-2) is in 2nd quadrant

in first question 2 lies in X and -3 lie in - x

thx

746.

There were 99 students standing in a line. Every 10th student from the beginning was given aschool flag to hold. The third student is given a staff and there after every 10 student is givenastaff. How many students are holding flags and how many are holding staff?

Answer»

10, 20, 30, 40, 50, 60, 70, 80, 90 are holding flags

3,13, 23, 33, 43, 53, 63, 73, 83, 93 are holding staff

So, 10 students are holding flag and 10 are holding staff

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747.

A student is given a quiz with 10 true orfalse question, and he answers by sheerguessing. If X is the number of questionsanswered correctly, what is the probabilitydistribution of X? If the student passes thequiz by getting 7 or max correct answers,what is the probability that the studentpasses the quiz ?

Answer»

X by he f did jxnf fnjff. fbfjf f ffjd f

748.

(10) There are 4 books belonging to 4 students. The books were put into a box, and each student pulls out abook one after the other. What is the probability that each student gets his or her own book?

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749.

LINEAR EQUATIONS IN ONEExample 45 Arjun is twice as old as Shriya. Five years ago his age was three timesShriya's age. Find their present ages

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750.

12. One half of Ram's age two.year from now plus one third of his agethree years ago is twenty year. How old is he now?

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