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Given length of hall = 20m 20cm = 2020cm.

Given breadth of hall = 12m 40cm = 1240cm.

Now,

The size of square tiles will be the HCF of 2020 and 1240.

= > HCF of 2020 and 1240 = 2 * 2 * 5 = 20cm.

Now,

Area of each tile = 20 * 20

= > 400 cm^2.

The required number of tiles = Area of hall/Area of each tile

= > (2020 * 1240)/400

= > 6262.

thanks a lot canu you kindly solve part2

Volume of wood = 40*34*30 - 38*32*28= 40800 - 34048= 6752 cubic cm.

Mean =sum/815=sum/8Sum=120New mean=2*Sum/8=15*2=30

Read the qouestion First stupid

60 min = 100 percentage1 percentage= 60/100min= 30/50= 3/5

The speed of man is = 5km/h , and time taken by the man is = 15min = 15/60 hr = 1/4hrs

so, length of bridge = SPEED×TIME = 5*(1/4) = 1.25Km = 1250m

for question (a)it would be 4 × side4×25 cm= 100 cm as it is a square

for question (b)as it is a rectangleit would be 2×(length+breadth)so it would be 2×(30+20)=100 cm

Given: ab+bc+ca=0To find : Value of1/(a^2-bc ) + 1/(c^2-ab) + 1/(a^2-bc)substitute -ac = ab + bc ; -ab = ac+ bc and -bc =ab + ac

1/(a^2-bc) +1/(c^2-ab) +1/(a^2-bc) =(1/(a2+ab+ac))+(1/(c2+ac+bc))+(1/(a2+ab+ac))=(1/a(a+b+c))+(1/b(a+b+c))+(1/c(a+b+c))=(ab + bc + ca)/[(a+b+c)(abc)]=0since ab+bc+ca=0

6 1/4=25/4 now 2hrs 40minutes=2*60+40=120+40=160minuteshence25/4% of 16025/400*160=10minutes

given point (1,2)(0,0)(a,b)these points r collinear it means their slopes r equalnow slope m AB = y2-y1/x2-x1=0-2/0-1= -2/-1=2& slope BC= b-0/a-0= b/anow 2= b/ab=2a

From 8 side 16/6 side 12/12 square cm.

hi i also in 9th 8side

1m is equal to 100cm so 12m will be 12*100cm 1200cm

thank u very much for the help

1)a) 200 cm b) 1000 cm c)320 cm e) 775 cm f) 105 cm g) 1001 cm

mq=4,pn:nr=4:4 is the answer for your question all the best

like if it is useful

Sol:(i) No. It is not possible to have a triangle with sides 2 cm, 3 cm and 5 cm.Sum of any two sides of a triangle must be greater than the third side.3 cm + 2 cm = 5 cmThe sum of two lengths is equal to the third side. Therefore, 5 cm, 3 cm and 2 cm cannot form a triangle.(ii) Yes. 6+3= 9>7(true)(iii) No. Sum of any two sides of a triangle must be greater than the third side.3 cm + 2 cm < 6 cmThe sum of two lengths is smaller than the third side. Therefore, 6 cm, 3 cm and 2 cm cannot form a triangle.

answer is Dwhen the two ratio of the coefficients of two linear equations are identical, then the solution of such equations are infinite,

option (d) is correct answer.

right answer is dbecause ratio of coffienct are equal so it infinite solution

Option D is the correct answer.

D is correct sooooo

Da1/a2=b1/b2=c1/c2

Standard form is ax+by +c = 0 as linear means to have degree of one

B) Option

thanks

(B) option ax+by+c=o is standard form

Option (B) ax+by+c=0

let Length be x and breadth be yAccording to questionx - 5y - 5then perimeter = 2( x + y -10) = 26x + y - 10= 13x + y = 23

Let the fraction be x/y.

The fraction becomes 1/2 when the denominator is increased by 4

⇒ x / (y + 4) = 1/2⇒ 2x = y + 4⇒ 2x - y = 4 -------------------------- (1)

The fraction is equal to 1/8 when the numerator is diminished by 5

⇒ (x - 5) / (y) = 1/8⇒ 8x - 40 = y⇒ 8x - y = 40 -------------------------- (2)

Solving equations (1) and (2), we get x = 6 and y = 8.

Therefore, the required fraction is 6/8.

1a)3-3=0, b)3x-6=3(3)-6=9-6=3, c)9-3x=9-3(3)=9-9=0; d)2/3x-1=2/3(3)-1=2-1=1

x=0, y=-2; 4(a)=x^2+y^2+2xy=(0)^2+(-2)^2+2(0)(-2)=4; (b)x^2-y^2=(0)^2-(-2)^2=-4; (c)2x^2+2y^2=2(0)^2+2(-2)^2=8,

A)

B)

C)

we have to draw these all the shapes

show the full diagrams

The perimeter is sum of all sides.Perimeter=5.4+4.6+6.8=16.8 cm

perimeter is 16.8 is ans

Perimeter = Sum of lengths of sides = 3+4+5= 12 cm

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Explanation : Perimeter means addition of all 3 sides. Perimeter = 3+4+5 = 12 cm

Answer : 12 cm

If you find this answer helpful then like it.

the correct answer isperimeter of triangle is sum of all side= 3+4+5=12.

The equation is not a quadratic equation or the question is incomplete..

X=X means

in given the (x,-1) means put x in x place and in y place put -1, first x coordinate and second is y coordinate.

X2 will not come over there

i can't understand your claim what x2 means

Now you can uderstand

Thank you soo muchhhh

Let A have money = xLet B have money = y

First conditionx + 900 = 2(y - 900)x - 2y = - 2700....(1)

Second Condition 3(x - 100) = y + 1003x - y = 400......(2)