Question

Which symbol replaces ? to make the statement true? 2⋅18−18 ? 2⋅[28−3⋅(2+4)]

A. >

B. =

C. <

Which expression has a value greater than the given expression when a = 2?

2(a + 6) A.2a + a²

B.4a + 8

Answer 1

<

Explanation:

Answer 2

First I would simplify each side in order to determine the symbol.

2 × 18 - 18 ? 2 × [28 - 3(2 +4)] I will simplify the left side first. Multiply 2 and 18

36 - 18 ? 2 × [28 - 3(2+4)]

18 ? 2 × [28 - 3(2 + 4)] Now simplify the right side. Add 2 and 4

18 ? 2 × [28 - 3(6)] Next multiply 3 and 6

18 ? 2 × [28 - 18]

18 ? 2 × 10

18 ? 20

18 < 20 Your answer is C because 18 is less than 20

First find the value of the give expression

2(a + 6) Since a = 2, plug in 2 for a

2(2 + 6)

2(8) = 16

A.) 2a + a² Plug in 2 for a

2(2) + (2)²

4 + 4 = 8

B.) 4a + 8 Plug in 2 for a

4(2) + 8

8 + 8 = 16

Neither A or B have a value greater than the given expression