Advertisements
Advertisements
Question
If `x/2 = 3`, then the value of 3x + 2 is ______.
Options
20
11
`13/2`
8
Advertisements
Solution
If `x/2 = 3`, then the value of 3x + 2 is 20.
Explanation:
Given, `x/2 = 3`
On multiplying both sides by 2, we get
`x/2 xx 2 = 3 xx 2`
⇒ x = 3 × 2 = 6
Put x = 6 in the equation 3x + 2, we get
3(6) + 2 = 18 + 2 = 20
APPEARS IN
RELATED QUESTIONS
If a = 2 and b = 3, find the value of a + b
If p = −2, q = −1 and r = 3, find the value of p2 + q2 − r2
Subtract:
10x2 from −7x2
If A = 7x2 + 5xy − 9y2, B = −4x2 + xy + 5y2 and C = 4y2 − 3x2 − 6xy then show that A + B + C = 0.
The sum of twice and four times of the variable x is __________
6 times q is subtracted from the smallest two digit number.
Give expression for the following case.
p divided by 7
Which of the following numbers satisfy the equation –6 + x = –12?
The sum of two numbers is 60 and their difference is 30.
The difference of numbers in term of x is ______.
In a Mathematics quiz, 30 prizes consisting of 1st and 2nd prizes only are to be given. 1st and 2nd prizes are worth ₹ 2000 and ₹ 1000, respectively. If the total prize money is ₹ 52,000 then show that:
- If 1st prizes are x in number the number of 2nd prizes are ______.
- The total value of prizes in terms of x are ______.
- The equation formed is ______.
- The solution of the equation is ______.
- The number of 1st prizes are ______ and the number of 2nd prizes are ______.
