Question

Evaluate the expression 10 – 5a +(18 – h), where a= 2 and b=11.

Which expression will have the same value?

A. 28 = (a x 2)
B. 20 +b - (4 x a)
C. 49 – 43 + (a + a)
D. 30 – 25 + (5 – 9)
E.50+ a - (b + 20)

Answer 1

To evaluate the expression 10 – 5a +(18 – h), substitute a = 2 and b = 11. Simplify to get 18 - h. Option B, 20 + b - (4 x a), will have the same value when a = 2 and b = 11.

Step-by-step explanation:

To evaluate the expression 10 – 5a +(18 – h), we substitute the values given for a and b. Since a = 2 and b = 11, the expression becomes: 10 - 5(2) + (18 - h). Simplifying further, we have: 10 - 10 + (18 - h). Combining like terms, we get: 0 + (18 - h). Finally, simplifying the expression gives us: 18 - h.

To determine which expression will have the same value, we need to substitute a = 2 and b = 11 in each option and compare the results. Option B, 20 + b - (4 x a), when substituted with a = 2 and b = 11, gives us: 20 + 11 - (4 x 2). Simplifying this expression, we have: 20 + 11 - 8. Thus, option B will have the same value.