Which expression has a value of 20?
a. 16−8×(2+4)16−8×(2+4)

b. (16−8)×(2+4)(16−8)×(2+4)

c. (16−8)×2+4(16−8)×2+4

d. 16−(8×2+4)

The correct option is,

C. (16−8)×2+4

Step-by-step explanation:

In option A,

16 - 8 × (2 + 4)

= 16 - 8 × 6

= 16 - 48

= - 32,

In option B,

(16-8) × (2+4)

= 8 × 6

= 48,

In option C,

(16-8) × 2 + 4

= 8 × 2 + 4

= 16 + 4

= 20

In option D,

16 - (8×2 + 4)

= 16 - (16 + 4)

= 16 - 20

= - 4

Therefore, the expression in OPTION C has the value 20.

the number of possible outcomes that do not show a 1 on the first spinner and show the number 4 on the second spinner is 2.

spinner 1 spinner 2

1                     1

1                     2

1                     3

1                     4

2                   1

2                   2

2                   3

2                   4   = not 1, and 4

3                   1

3                   2

3                   3

3                   4 = not 1, and 4

only 2 outcomes have passed the given condition.

step-by-step explanation: