Question

Which of the following expression has a value of 10?
a) 2t+ 4, t=4
b) 7t ÷ 3 - t, t=3
c) 3t – 10, t= 2
d) 4y– 10, y=5

Answer 1

Answer:

d) 4y– 10, y=5

Step-by-step explanation:

d) 4y– 10, y=5

    4(5)-10 = 20-10 = 10

Answer 2

Answer:

2t + 4,t = 4

= 2× 4 + 4

= 8 + 4

= 12

7t ÷ 3 - t , t = 3

= 7×3÷3-3

= 21÷3-3

= 7-3

= 4

3t - 10 , t = 2

= 3×2-10

= 6-10

= -4

4y - 10 , y = 5

= 4×5-10

= 20-10

= 10

therefore 4y-10,y=5 as it's value as 10