1. Determine which statement(s) is always true. (Select all that apply) A. angle 1 + angle 4 = 180
B. angle 5 - angle 7 = 0
C. angle 2 is congruent to angle 8
D. angle 5 is congruent to angle 8

2. Name a pair of vertical angles in the image below

the volume is the product of the area of the base, 3x(3x+4), and the height, 3x-1

step-by-step explanation:

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.

-8/2y-8=5/y+4-7y+8/y^2-16

we move all terms to the left:

-8/2y-8-(5/y+4-7y+8/y^2-16)=0

we can not solve this equation