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a=2,d=7-2=5

10th term=a+(10-1)d=2+9(5)=2+45=47

Let the number is x + 10y according to question, xy = 24 ----(1)

again,

x + 10y +45 = y + 10x

x - y = 5 --------(2)

solve equations (1) and (2)

x - 24/x = 5

x² -5x -24 =0

x = { 5±√25+96)}/2

=(5±11)/2

= 8, - 3

but x ≠ -3

so, x = 8 put this equation (2) y = 3

So, the number is 8 + 30 = 38

Given that,In PQRS parallelogram,PQ=26cmQR=20cmdistance between longer sides =12.5cm(i) Area of parallelogram=base ×height cm^2=PQ×h=26×12.5=325 cm^2 (ii)Area of parallelogram=base×heightheight=Area/basedistance b/wshorterside=325/20=65/4=16.25cm

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A and B together can complete the work in 4 days and A alone can complete in 12 days so B can complete in1/4-1/12=(3-1)/12=2/12=1/66 days.

it's 8th class question so easy

wrong pleas try again

2) 30 is the correct answer by me

a)19b)30c)35d)7e)-42f)-128

Let, the tens digit =xso, ones digit =2x.•. number= 10x+2x=12xreverse number= 10×2x+x=20x+x=21x

it is given that,12x+21x=99or 33x=99so, x=3

original number=10x+2x=30+6=36

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let once digit = 2x and tens digit = x so no = 10x +2x = 12x reverse no = 20x + x = 21xgiven, 21x + 12x = 99 33x =99 x = 3 no original = 10*3+2*3 =36reverse no = 10*3*2 + 3 = 63

let x = the 10's digitlet y = the unitsthen10x+y = the number:Write an equation for each statement::" the digit at the tens place of a two digit number is three times the digit at ones place."x = 3y:"The sum of this number and the number formed by reversing its digit is 88,"(10x + y) + (10y + x) = 8810x + x + 10y + y = 8811x + 11y = 88simplify, divide by 11x + y = 8:(Replace x with 3y)3y+y=84y=8y=2x+y=8x+2=8x=6

That is the solution.

One man will takemtimes as longto do the same job, so, the rate of workingfor 1 man is:[ 1 job ] / [ d * m days ] =1/dm--------------------More men will get the job done faster, so the new rate is[ m + r men ] x [ rate for 1 man ] =m+r/dm--------------------Now convert this to [ 1 job ] / [ time to do the job ]by dividing top and bottom bym+r---------------------------m+rmen will takedm/m+r daysto do the job

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Let tens digit be xThen ones digit be 2x

Then original no. = 10x+2xIf digits are reversed then tens digit is 2x and ones digit is xThen new no. = 20x+x

According to given condition10x+2x + 20x+x = 9933x = 99X = 3

Original No. 10x+2x=12x=36

the hcf of 6x^4y and 12xy is 6xy

I think 2 answér is x,0

√10 is the correct answer of the given question

√10 is the correct answer of the given questiony= -3 is the correct answer of the given question.

√10andy=-3is the answer of tgis question

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as days can not be negative that's why we have taken only positive days

For the work to be done in 52 days , men required = 27 days now 27*52 = 36*(no. of men)so no. of men = (52/27)*36 = 39 men.

4 is the correct answer

4 is the correct answer

option 4 is the correct answer

option 4 is the best answer

the answer is option b

the 5000 find the least number find the least number of 6 digit which is a perfect square find the square root of this number

(A + B)'s one day work = 1/6A's one day work = 1/15

Then,B's one day work = (A+B)'s work - A's work= 1/6 - 1/15= (5 - 2)/30= 3/30= 1/10

Therefore, B alone will complete work in 10 days

Perimeter =2 (length + breadth)So length=(perimeter/2) - breadthLength = (60/2) -19 =11

this answer is correct

Perimeter=2(length+breadth)60m=2(19+breadth)60/2=19+breadth30=19+breadthbreadth=30-19=11m

Length = 19mPerimeter= 2(l+b) = 60=> l+b = 30=> b = 30-19 = 11m

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Let x² be the largest six-digit perfect square.

The largest six-digit number is 999,999, sox² ≤ 999,999.

You know that 1,000² = 1,000,000, which is only 1 more than 999,999, so x² must be the next smaller square, which is (1,000 - 1)².(1,000 - 1)² = 999² = 998,001.

The smallest 6 digit number is 100000 We find the square root of 100000 with a calculator:  = 316.227766 We take the next larger whole number 317 We square 317 317² = 100489 That's the smallest perfect square which is a 6-digit number, because when we square 316 we only get 99856, which is only a 5-digit number. Answer: 100489

Find the least number of 6 digits which is a perfect square.?The smallest 6 digit number is 100000 We find the square root of 100000 with a calculator:  = 316.227766 We take the next larger whole number 317 We square 317 317² = 100489 That's the smallest perfect square which is a 6-digit number, because when we square 316 we only get 99856, which is only a 5-digit number. Answer: 100489

Answer

Least number of six digits is 100000.

∴√100000 = 316.2

Hence, Perfect square greater than 100000 is (317)2and least of six digits.

(317)2= 100489