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4051.

In chlorophyceae starch storage pyrenoidsare present in1) Chloroplast 2) Outside chloroplast3) Cytoplasm4) Cell wall

Answer»

Most of the members have one or more storage bodies called pyrenoids located in the chloroplast.option 1

4052.

The watt-hour efficiency of a lead-acidcell varies between

Answer»

It is a ratio between the energy which a cell gives out during discharging and the energy which it requires to regain its original condition during charging.

It is expressed as,

E% (Efficiency) = watt-hours on discharging/watt-hours on charging

As, voltage on discharge is always less than voltage on charge. Efficiency is always less than 100%.

For a normal lead-acid battery, efficiency varies from 80–85%.

4053.

6.Find the relationship between a and b so that the function f definedby:ax +1, if x s3f(x)-İbx +3, if x >3is continuous atx3.

Answer»
4054.

TwoFindthirdangles of a triangle are SAthe degree and radian measureangleand SAof

Answer»

5π/9= 5×180/9= 1005π℃/18= 5×180/18= 50sum of three angle = 180100+50+x(let 3rd angle)=180x= 180-150= 30°value in radian = 30π℃/180= π℃/6

30 degree or π/6 is the answer

4055.

(3) SaIf S is the circumcentre,(1) SOntre, O is the orthocentre of AABC, then SA+SB+SC equalsthe o(2) 2 so

Answer»
4056.

IfS is the sum, P is the product and R is the sum of the reciprocals of 3 terms of a G.Pp2R3/S3then prove thatis equal to 1.

Answer»
4057.

SAFig, 6.14

Answer»

let angle a and b be 2x and 3xa+b+90=180 (linear angles)2x+3x+90=1805x=180-905x=90x=90/5x=18angle a=2x=2×18=36angle b=3x=3×18=54MON is a line sob+c=180 (linear pair)54+c=180c=180-54c=126

4058.

sn esimnsSA

Answer»

Just replace the x by theta

4059.

The sum of three consecutive natural numbers is 99. Find the numbers.

Answer»

let the consecutive numbers bex + x +1 + x + 2 = 993x +3 = 993x = 96x = 32so consecutive numbers are32,33,34

4060.

The sum of three consecutive natural numbers is 114. Find the numbers.

Answer»

x+x+x=1143x=114x=114 ----- 3x=38

4061.

Which is greater?Gloalor

Answer»
4062.

The sum of three consecutive natural numbers is36. What are the numbers?

Answer»

Let the numbers be x, x + 1, x + 2.Given, sum of numbers = 36 x + (x + 1) + (x + 2) = 36 3x + 3 = 36 3x = 33 x = 11∴ The numbers are 11, 12, 13.

do you know any other like this

4063.

The sum of three consecutive natural numbers is 99. Find the numbers

Answer»
4064.

4. The sum of three consecutive natural numbers is 114. Find the numbers.

Answer»

let 1st consecutive number=xlet 2nd consecutive number x +1let 3rd consecutive number x+ 2According to Question x +x +1+ x +2=1143x+3=1143x=114-33x=111x =111÷3x=37so 1st consecutive no. =372nd consecutive no. =37+1=383rd consecutive no. =37+2=39

4065.

Look at these1x4(2 x3)-22 x5 (3 x4)-24×7 = (5×6)-2Write the next two lines in this pattemIf we take four consecutive natural numbers, what is the relationbetween the products of the first and the last, and the product ofthe middle two? dWrite this as a general principle in algebra and explain it.

Answer»

> 5×8=(6×7)-26×9=(7×8)-2>4 consecutive natural number will be n,n+1,n+2,n+3then product of first and last term=n(n+3)=n²+3nproduct of middle terms=(n+1)(n+2)=(n²+3n)+2product of middle terms=(product of first and last)+2

4066.

ve1-2xThe sum of three consecutive natural numbers is 114. Find the numbers.

Answer»

thank you

4067.

(a) 02(v) The mean of first four natural numbers is(a) 2(b) 2.5(vi) The median of first eight natural numbers is(a) 4(b) 5

Answer»

(v) First four natural numbers are 1,2,3,4Mean=1+2+3+4/4=10/4=2.5

Option b is correct

(vi) First eight natural numbers are 1,2,3,4,5,6,7,8Median=4+5/2=9/2=4.5

4068.

(Number System 1)yLCM of first 10 natural numbers is N. What is the LCM of first 15 natural numbers?(a) UIN(b) 11 x 12 x 13 x 14 x 15N(143N(d) Cannot be determined

Answer»

I feel option B is right

option c143 Nis correct

option =c143nit is correct

option c is the right answer

(c) is correct answer

options b is correct

option c is the correct answer

Option C =143n is correct

option c is the right answer

option c is right answer t

Option C is the correct option

4069.

Q.30) If the sums of fir n, 2n, 3n terms of an AP are Si, S2, Srespectively, show that S3 3(S2 Si)

Answer»
4070.

3si

Answer»
4071.

yL andedifference between two numbers is 26 and one mes the other. Find the numbers.number is three

Answer»
4072.

Find the next number in the series?100,200,600, _?_ [Multiple patterns canexist but the pattern chosen and decidedby the company will be considered final]8008001200C24002400)

Answer»

2400 is the correct answer

2400 is a correct answer by the following question..

2400 is A correct answer

100 × 2 = 200200 × 3 = 600600 × 4 = (2400) is answer

100×2=200, 200×3=600, 600×4=2400

The next number is 2400

option B is the correct answer

2400 is a right answer

2400 is correct answer

2400 is the right answer

2400 is the right answer

2400 is the right answer

2400 is the right answer

600*4=2400 is the correct answer

100*2=200, 200*3=600, 600*4=2400 2400 is answer

the answer is 2400 ..

100×2=200200×3=600600×4=2400

100×1=100100×2=200200×3=600600×4=2400

2400 is the right answer

4073.

(c) Diploidd) Triploid10. The microsopic structure in flower thatcontains polar nuclei isa) Only gametophyte (bj Pollen tube(c) Embryo sacEmasculation is achieved byaj Removal of stigma(d) of the above11.

Answer»

Answer:C) Embryo sacExplanation: large binucleate cell in the center containing two polar nuclei is called the endosperm mother cell. The other sperm nucleus fuses with the two polar nuclei inside the endosperm mother cell to form the tripolid (3n) endosperm of the seed. Microscopic view of the embryo sac (megagametophyte) of a lily (Lilium).

4074.

. Two cells that fuse to give zygote arecalled:(A) gametes(C) foetus(By embryo(D) ovum

Answer»

Those two cells are the male and female gamates that is sperm and ovum hence option A

4075.

A river 3 m deep and 40 m wide is flowing at the rate of 2 km per hour. How mwill fall into the sea in a minute?

Answer»

thnx

4076.

add the following 5 by 2mn,-3 by 5 mn, -4,- 3 by 2 mn, +5,-2 by 5 mn

Answer»
4077.

(ii)to nan the area of an equateral mangie descibed on one ol its dlagonaIf the areas of two similar triangles are equal, then prove that the triangles are congruent.

Answer»

Given: ΔABC ~ ΔPQR. &

ar ΔABC =ar ΔPQR

To Prove: ΔABC ≅ ΔPQR

Proof: Since, ΔABC ~ ΔPQRar ΔABC =ar ΔPQR. (given)

ΔABC / ar ΔPQR = 1

⇒ AB²/PQ² = BC²/QR² = CA²/PR² = 1

[ USING THEOREM OF AREA OF SIMILAR TRIANGLES]

⇒ AB= PQ , BC= QR & CA= PR

Thus, ΔABC ≅ ΔPQR[BY SSS criterion of congruence]

hit like if you find it useful

4078.

mnEvaluate mn when m = 8 and n = 3.

Answer»

8×3/6=24/6= 4 is the best answer 🛡️🛡️🛡️

putting the vaue in mn/6(8×3)/6=4

answer is 4 please like my answer

4079.

The number of ways in which ten candidates A, AAo can be ranked such that A, ls always above Ao ls(D)101)10(A) 5!(B) 2(5)(C) 10

Answer»

Total number of ways to arrange a1 .. a10 = 10!In 10! / 2 combinationsa1 will be above a2 and in the other half a2 will be above a1.

Ans : 10! / 2

4080.

EXERCISE3B1.(a) The full marks in an examination is 600. If a student secures 78% marks, how muchdoes he score?

Answer»

four hundred and sixty eight

brother 468 is the correct answer

460 is the correct answer of the given question

78/100X600=460 marks

460 marks is correct answer.

By sum of triangle =180

4081.

14. In an examination, first division marks are 60%. A student secures 538 marks andmisses the first division by 2 marks. Find the total marks of the examination.15, Out of 1200 pupils in a school, 900 are boys and the rest are girls. If 20% of the boysand 30% of the girls wear spectacles, find :() how many pupils in all wear spectacles.(ii) what percent of the total number of pupils wear spectacles.

Answer»

60x/100 = 538+2

x = 100*540/60

x = 900 marks

4082.

In an examination, a student should secure 40% to pass. A student secures *fails by 15 marks. Find the maximum marks of the exam,[Home

Answer»

yes, the total marks is 500. It is the correct answer of the given question.

4083.

43.A student has to secure 36% of the maximum marks to pass. He secures 18 marks and fails by 36 marks.Find the maximum marks.

Answer»

the total marks of the paper is 150 and the passing marks are 54

4084.

7. The average percentage marks of 25 students in a class is 60. If the marks of one morestudent is included, the average increases by one. The percentage marks of the student is?(a) 80(b) 86(c) 90(d) 78

Answer»

total marks = 60×25 = 1500 now one more student added so average increase by 1 so new total = 61×26 = 1586 so percentage of new student = 1586 - 1500 = 86

4085.

Sinop + lost

Answer»

sin^2A +cos^2A=1

iska answer 1hoga.

4086.

Find three vedionalne. benveen

Answer»

Three irrational numbers between root 2 and 1.5 are √2+0.01,√2+0.001,√2+0.02because the sum of a rational and irrational number is irrational and here √2 is irrational.

4087.

find three irrational numbers between 11 Nd 12

Answer»

11.2, 11.5, 11.8 is the right answer

11/2‚11/3 AND 11/4 this te answer

45/4 ,46/4,47/4 is the correct answer

4088.

Find three irrational numbers between-and711

Answer»

the three irrational no. between 5|6 nd 9|11 are 6|8,7|9,8|10

4089.

Find three irrational numbers between the rational numbersand

Answer»

5/7 and 9/11hence5*11/7*11 and 9*7/11*755/77 and 63/77hence3 rational numbers 56/77,57/77,58/77

4090.

Find three different irrational numbers between the rational numbersClassify the following numbers as rational or irrational:and

Answer»
4091.

eITE S bgytgyडक

Answer»

Range = maximum value - minimum value= 71-35= 36.

Please hit the like button if this helped you

4092.

Find three different irrational numbers between

Answer»
4093.

Find three different irrational numbers between the rational numbers

Answer»

Thank you

4094.

&Find three different irrational numbers between the rational numbers

Answer»
4095.

eic hc elif

Answer»

x 3------ = ----- -25 5so 3 × (-25) -15 x = ------------ = 5so x = -15

4096.

1Eint the cosste f lost wsteh twdes the ei

Answer»

Let P(x, y) be the required point.

Using the section formula, we get x = 2*-1 + 3*-1/2 + 3x = - 2 - 3/5 = - 5/5 = - 1

y = 2*-3 + 3*7/2 + 3y = - 6 + 21/5 = 15/5 = 3

Therefore, the point is (-1, 3).

4097.

iven sec 0calculate all other trigonometric ratios.1312

Answer»
4098.

576 5765. Find the square root of 625 6251 Ei

Answer»

sqrt (576/625)=sqrt (24×24/25×25)=24/25

4099.

(vi) (x I x is a vowel in English)(vii) (x | x is an integer, x < 10)(ix) (x | x is a factor of 20)

Answer»
4100.

2. A torch light illuminates the wall in the shape of a circle of diameter 26 cm.Find the area of the wall illuminated correct to two decimal places.T

Answer»

area= πr^222/7*13*13531.42 cm^2