The difference of two numbers is 9 and they are in the ratio 4:7. find the numbers. MASTER 10,3 тыс. подписчиков Скачать
When three times a certain number is subtracted from 8 times the same number, we get the result 35, Скачать
A triangle having a perimeter 56 units and its sides are 2x, 2x+3 and 2x+5. Find the respective leng Скачать
A father is 3 times as old as his son. After 15 years, he will be twice as old as his son. What Скачать
Solve the following equations and verify your answer:(1) (3x+5)/(3-2x) = 5/3 (4) 5x/(3x+4)= -5 (7) Скачать
Solve the following equations:1)5x=20 2)7x-5=16 3)7=2x-5 4)3𝑥/2=18 5)4/7+x=20/7 6)13+2a=39 7)2x-5=3 Скачать
Resolve the following into factors:1)4x2-12x+9 2)25a2+30a+9 3)49m2+84mn+36n2 4) m2-8mn+16n2 5)4x2-12 Скачать
Divide: 1)36x3y2 by 4xy 2)24xy2z2 by -6xy2z 3) -81x3y2z by -9x2y 4)63x4yz2 by x2yz5)42m4n4p3 by 7m2 Скачать
Factorize each of the following:1)9a2-16b2 2)3x2-12 5)9x2- 1/144 6)3x5-243x 8)81-p4 9) x4-16y4 Скачать
The sides of a triangle are of lengths 6.5cm, 6cm and 2.5cm.Is this triangle a right triangle? If Скачать
A ladder 4.5cm long is placed against a wall in such a way that That the foot of the ladder is 2.7m Скачать
The hypotenuse of a right angled triangle is 25cm. If one of the Remaining two sides is 15cm, find t Скачать
A 10m long ladder reaches a window 8m high from the ground On placing it against a wall at a distanc Скачать
Is it possible to have a triangle with the following sides? (i)6cm, 3cm, 2cm (ii)3cm, 6cm, 7cm (iii) Скачать
Find the area of the pentagon as shown in the figure, if AD=15cm, AH=10cm, AG=8cm,AF=5cm, BF=6cm,GE= Скачать
The top surface of the raised platform, as shown in the figure, is in the shape of a regular octagon Скачать
The area of a trapezium is 390sq.cm. one of its parallel sides is 5 cm longer than the other and the Скачать
The lengths of parallel sides of a trapezium are 21.5cm and 23.5cm. if the distance between them is Скачать
The distance between parallel sides of a trapezium of area 441sq.cm is 18cm. if one of the parallel Скачать
The area of a trapezium is 156sqcm. If one of the parallel sides is 9cm and the distance between the Скачать
The area of a trapezium is 450sqcm and the lengths of the parallel sides are 37cm and 23cm. Find Скачать
The sum of parallel sides of a trapezium is 50cm and the perpendicular distance between them is 11cm Скачать
One side of a triangle is produced and the exterior angle so formed is 120ᵒ. If the interior opposit Скачать
The area of a rhombus is 360 sq.cm. if one of its diagonals is 40cm, find the other diagonal. Скачать
Which of the following triplets can be the angles of a triangle? (i)76ᵒ, 64ᵒ, 40ᵒ (ii)30ᵒ, 70ᵒ, 90 Скачать
Factorise: (1)12x^2-9x (ii)10xy^2-15x^2y (iii)6xy-9yz (7)14a^2-28a^2b^2+21a^4 (10)3x(a-3b)-y(a-3b) Скачать
Find the value of each of the following:(i)176x176-124x124/52 (ii)324x324-276x276/48 (iii)(12.9)^2 Скачать
Using identities,evaluate the following (i)(81)^2 (ii)(198)^2 (iii)165x155 (iv)(7.25)^2-(2.75)^2 (v) Скачать
use the identity (x+a)(x+b)=x2+(a+b)x+ab to find the following products: (i)(x+4)(x+3) (ii)(3x+5y) Скачать
use suitable identity to find each of the following products: (i)(x+5)(x+5) ii(3x-7)(3x-7)(iii)(a-c) Скачать
Evaluate each of the following using appropriate identities: (i)(a^2+b^2)^2 (ii)(xy+2z)^2 (a^2-b^2) Скачать
Identify the like terms in each of the following: (i)3x2,y2,-x2,z2 (ii)2ab,bc,6a,-4bc (iii)3x2z, -4x Скачать
write 9x9x9x9 in exponential form taking base as 3. write 8x8x8 in exponential form taking base as 2 Скачать
Subtract: (i)2a(a-3b+5c) from 5a(2a-3c+b)(ii)3x(x-y-z)+3y(x-y+z)+3z(x+y-z) from 3(x+y)(x-y)+3z(2y+z) Скачать
A plastic box 1.5 m long, 1.25 m wide and 65 cm deep is to be made. It is opened at the top. Ignori Скачать
Write the coefficient and constant term of each of the following expressions (i)5ab^2 c-4ab+1(ii)3+a Скачать
Find the volume of the rectangular boxes with the following length,breadth and height respectively Скачать
Which of the following numbers are divisible by 11?(i)264 (ii)968 (iii)61809 (iv)32571 (v)23455 Скачать
Check the divisibility of the following numbers by 3:(i)616 (ii) 537 (iii) 927 (iv) 924 (v) 100 Скачать
Without actual computation, find the quotient when the difference of 952 and 259 is divided by 9 Скачать
Find the quotient if the sum of the number 784 and two other numbers obtained by arranging the digit Скачать
Without performing actual computation, find the quotient when the sum of 79 and 97 is divided by: Скачать
Without performing actual computation, find the quotient when 95-59 is divided by (i) 9 (ii) 4 Скачать
Find the cube root of the following numbers without finding prime factors:(i)157464 (ii)5832 (iii) Скачать
Find the smallest number by which each of the following numbers must be divided to make a perfect cu Скачать
Which of the following numbers are not perfect cubes?(i)5324 (ii)243 (iii)1728 (iv)2437 (v)3824 Скачать
Write the units digit of the cube of each of the following numbers: (i)21 (ii)209 (iii)2365 (iv)774 Скачать
Find the smallest number by which each of the following numbers must be multiplied to obtain a perfe Скачать
ABCD is a rhombus in which the altitude from D to side AB bisects AB. Find the angles of the rhombus Скачать
ABCD is a rhombus whose diagonals intersect at O. If AB=10cm, diagonal BD=16cm, then find the length Скачать
In the parallelogram PQRS, the diagonals intersect at O. if OS=5cm and PR is 6cm more than QS, find Скачать
PQRS is a parallelogram and the diagonals intersect at O. if OP=2.5cm and OQ=3.6cm, find OR and OS. Скачать
In the given figure,l||m and n is a transversal.if angle c=72,find the measure of each of the angles Скачать
The four angles of a quadrilateral are in the ratio 1:2:3:4. what is the measure of each angle? Скачать
Each of two equal angles of a quadrilateral is of measure 80 and the other two angles are also equal Скачать
How many sides does a regular polygon have if each of its interior angles is:(i)156 (ii)108 (iii)160 Скачать
Find the measure of each exterior angle of a regular polygon of:(i)10sides (ii)12sides (iii)15sides Скачать
The total weight of certain bags of rice is 650.16kg. if each bag weighs 10.32 kg, find the numbers Скачать
Divide:(i)12.98 by 4 (ii)36 by 0.4 (iii)30.94 by 7 (iv)7.75 by 25 (v)24.66 by 12 (vi) 6.2 by 248 Скачать
Divide:(i)25.5 by 0.5 (ii)20.4 by 6 (iii)27 by 0.03 (iv)89.1 by 3.3 (v)2.73 by 1.3 (vi)0.5 by Скачать
Without calculating the square root, find the number of digits in the square root of the following n Скачать
Find the least number which must be added to each of the following numbers to make it a perfect squa Скачать
Find the least number which must be subtracted from each of the following numbers to make it a per Скачать
Find the square root of the following by division method:(i) 9801 (ii) 54756 (iii)8649(iv)4489 Скачать
A school collected rs.11025 as fees from its students. If each student paid as much money as there Скачать
The product of two numbers is 2197. If one of the numbers is 13times the other number, find the numb Скачать
The greatest 5-digit number which is a perfect square is (a) 99956 (b)99856 (c)99996 (d)99865 Скачать
A rectangular field is 81m long and 49m wide. A square has the same area as that of the rectangular Скачать
For each of the following numbers, find the smallest number by which it should be divided so as to g Скачать
A rope of length 33/5 m has been divided into six pieces of equal length. What is the length of eac Скачать
For each of the following numbers, find the smallest number by which it should be multiplied so as t Скачать
Write down the reciprocal of each of the following fractions: (i)1/13 (ii)12 2/5 (iii)9 (iv)6/7 Скачать
By what number should (-6)-1 be multiplied so that the product is 27-1?a)(-2)/9b)4/7c)9/(-2)d)(-9)/1 Скачать
There are 48 students in a class and 2/3 of them are boys. How many girls are there in the class? Скачать
Priyanka has 24 apples. 3/4 of these are found to be rotten.Find the number of rotten apples. Скачать
Multiply and reduce to lowest form (if Possible) (i)3/5x2 2/5 (ii)3/5x5/6 (iii)1/4 x 32/3 (iv)7 3/4x Скачать
Find the square root by prime factorization method. (i)676 (ii)27225 (iii)15625 (iv)390625 (v)99856 Скачать
Find the square root of the following by repeated subtraction method. (i)144 (ii)289 (iii)169 Скачать
A school collected ₹11025 as fee from its students. If each student paid as much money as there Скачать
The product of two numbers is 2197. If one of the numbers is 13 times the other number, the numbers Скачать
A number d is such that its prime factorisation consists of 12 prime numbers. Which ( of these shows Скачать
Blubber makes 27 per cent of a blue whale's body weight. If the average weight of their blubber is 2 Скачать
The size of a red blood cell is 0.000007m and that of a plant cell is 0.00001275m. Which is bigger a Скачать
Mass of Earth is 5.97*10^24 kg and that of Moon is 7.35*10^22 kg. Find the total mass of the Earth a Скачать
Construct a quadrilateral PQRS, where PQ = 4cm, QR = 5cm , angle P=60°, angle Q=100° and angle R=75° Скачать
Construct a quadrilateral TRUE, in which TR = 4 cm, RU = 5cm JE = 4.5 cm, angle R = 60° and angle U Скачать
Construct a quadrilateral ABCD, given that AB = 4 cm, BC = 5.2 cm, CD = 6 cm, angB=105° and angC=80° Скачать
The performance of a student in two class tests (out of 20) is given. Draw a double bar graph choos Скачать
The result of pass percentage of class X and XII in CBSE examination for 5 years are given in the fo Скачать
Calculate the mode of the following sizes of the shirts sold by a shop on a particular day: 34, 38, Скачать
The height (in cm) of 12 boys are as follows: 141, 136, 128, 135, 142, 133, 139, 147, 151, 145, 138, Скачать
![Simplify: (i)((2 ^ 7)/(2 ^ 3)) * 2 ^ 5(i) [(5 ^ 2) ^ 3 * 5 ^ 4] = 5 ^ 7(m) (4 * 3 ^ 4 * 2](https://s2.save4k.su/pic/hCpHdMOUsv0/mqdefault.jpg)
