please answer this question very quickly who give right answer I will thank him
Answers
Answer:
one more than twice the numbers
Answer:
Question 1:
If each matchbox contains 50 matchsticks, then the number of matchsticks required to fill n such boxes is
(a) 50 + n (b) 50 n (c) 50 + n (d) 50 – n
Solution:
(b) Given, each matchbox contains 50 matchsticks.
Then, total number of matchsticks in n boxes = Matchsticks in one box x Total boxes
= 50 x n = 50 n
Hence, (b) is correct option
Question 2:
Amulya is x years of age now. 5 years ago, her age was
(a) (5 – x) years (b) (5 + x) years (c) (x – 5) years (d) (5 + x) year
Solution:
(c) Given, Amulya’s present age = x
5 years ago, Amulya’s age = (x – 5) years Hence, (c) is correct option.
Question 3:
Which of the following represent 6 x b?
(a) 6 b (b) 6/b (c) 6 + b (d) 6 – b
Solution:
(a) Given that, 6 x b = 6b
Hence, (a) is correct option.
Note: In algebra multiplication, sign does not show in the product (result).
Question 4:
Which of the following is an equation?
(a) x +1 (b) x -1 (c) x -1 = 0 (d) x +1 > 0
Solution:
(c) We know that, an expression with a variable, constants and the sign of equality (=) is called an equation.
So, x -1 = 0 is an equation.
Hence, (c) is correct option.
Question 5:
If x takes the value 2, then the value of x + 10 is
(a) 20 (b) 12 (c) 5 (d) 8
Solution:
(b) Given, expression = x + 10 On substituting x = 2, we get x + 10 = 2 + 10 = 12 Hence, (b) is correct option.
Question 6:
If the perimeter of a regular hexagon is x metres, then the length of each of its sides is
(a) (x + 6) metres (b) (x + 6) metres
(c) (x – 6) metres (d) (6 + x) metres
Solution:
(b) Given, perimeter of regular hexagon is x metres, Number of sides in regular hexagan = 6
Length of each sides
Hence, (b) is correct option.
Question 7:
Which of the following equations has x = 2 as a solution?
(a) x + 2 = 5 (b) x – 2 = 0
(c) 2x +1 = 0 (d) x + 3 = 6
Solution:
(b) To get solution as x = 2, solve each equation. .
I hope it will help you
thanks