2.
We have a transversal across parallel lines so we get the usual array of congruent and supplementary angles. We just have to figure out which is which, and the diagram, even though not to scale, makes it pretty obvious.
Angle x isn't the same as the 40° angle so it must be its supplement.
Answer: C 140°
3.
r=1.2, h=2.9, V = (1/3) πr²h
Nothing hard here, we just plug in the numbers,
V = (1/3) π (1.2)² (2.9) ≈ 4.37310
Answer: B. 4.4 cubic inches
4.
Dilation by .5 makes a similar triangle, and reflection is an isomorphism (i.e. it doesn't change the size or shape) so the answer is
Answer: B similar not congruent
5.
The corresponding interior and exterior angles of a triangle form a linear pair, so supplementary angles. x=180-110 = 70°
Answer: A 70°
The slope of the red line would be 5 as well as long as the lines are parallel. If it were perpendicular, or made an x, then the slope would be (1/5)<span />
Answer:
6
+ 5x² - 2x + 3
Step-by-step explanation:
Given
( + 2x² - 4) - (-5 - 3x² + 2x - 7)
Remove the parenthesis on the first factor and distribute the second by - 1
= + 2x² - 4 + 5 + 3x² - 2x + 7 ← collect like terms
= 6 + 5x² - 2x + 3 ← in standard form
Answer:
85 im pretty sure..
Step-by-step explanation:
