Help please If a+1 is divisible by 3 without remainder, prove that 4+7a is divisible by 3 without remainder

What is the difference between the points (4, 7) and (4, -5)? a. 0 units b. 2 units c. 4 units d. 12 units

Sketch one cycle if the cosine function y=2cos2theta

Kate is arranging new furniture in her rectangular sitting room. she has mapped the arrangement on a coordinate pane. a, b and c represent the sofas, v1 and v2 are decorative vases and aq the aquarium. find the distance between v1 and the aquarium. any body you