Question

please help me in this
questions don't worry this is a practice work tomorrow is my maths exam I am not cheater ​

Answer 1

Answer:

1. 45

2. x = - 2

3. Merko conform nhi h

4. 1/3

5.

Answer 2

Revision work

1)Reffer to the attchment and copy this

==>3×3×3×3×3×3×5×5×5

==>3×3×5

==>45

Théŕéfőŕé thé ćúbé ŕőőt őf 91125 íś (45)^3

______________________________________

2)

7x-5=5x-9

=5-7x= -9+5

= -x= -4

x= -4/-2

x=2

_____________________________________

3)

ŕéfféŕ tő thé śéćőńd ṕíć

Théŕéfőŕé thé śqúáŕé ŕőőt őf 12.25 = 3.5

___________________________________

5)

reffer to the third pic....

Hence 81/140,82/140,83/140 are the three

rational numbers

____________________________________

6)

reffer to the fourth pic...

Therefore the cube root of 110592=48

_____________________________________

7)

The sq root of 17.64=4.2

______________________________________

9)

reffer to the fifth pic.

Hence 37/104:38/104:38/104,,,are the three rational numbers

______________________________________

10)

The new number is greater than the old number by 27,

i.e. Adding the two equations, we get 2y = 12 or y = 6. Thus, x = 3. Therefore, the original number is 36

______________________________________

11)

Let the digit in units place be x.

Then, digit in ten's place =3x

So, original number =10(3x)+x=31x

On interchanging the digits, new number =10x+3x=13x

According to the given condition,

31x+13x=88

44x=88

==>x=2

So, the original number is 31x or 31×2=62.

On the other hand, if we consider the digit in ten's place as x, then the digit in unit's place will be 3x.

So, the resulting number we get is 26.

Here, both answers are correct, as 26+62=88.

________________________

12)

After 5yrs Shobo's age will be 1/3 of his mothers present age. We will solve this linear equation in two Variable to get the ages of Shobo and his mother. Hence Shobo's present age is 5yrs and present age of mother will be 5 × 6 = 30yrs

________________________