Evaluate -5u for u = -4

20

Step-by-step explanation:

-5 • (-4) = 20, and multiplying negatives make it positive.

-5 × - 4 = 20

since, (-) × (-) = (+)

5 × 4 = 20

therefore,

= +20

answer:

sometimes

*i think

3< x< 5

step-by-step explanation:

|x - 4| < 1

there are two solutions, one positive and one negative.   remember to flip the inequality when taking the negative solution

x-4 < 1       x-4 > -1

add 4 to each side

x-4+4 < 1+4       x-4+4 > -1+4

x< 5                 x> 3

3< x< 5