Answer: d. 102
Why
If 6 is 78 then 5 is 102 and since 1,3,5,and 7 are equal 3 is 102. [180-78=120(180 is the straight line)]
Answer:
C
Step-by-step explanation:
∠ FHI and ∠ JHI form a straight angle and are supplementary, thus
3x + x = 180, that is
4x = 180 ( divide both sides by 4 )
x = 45
Thus
∠ FHI = 3x = 3 × 45 = 135° → C
The equation to find percent error is

where actual is the value that actually came out (in this case, 11.5 km) and theoretical is the value that was supposed to come out (in this case, 10 km). Just plug in the numbers and simplify.

So, the true answer would be 15%. Apparently, the question you're asking takes 11.5 as the theoretical and the 10 as the actual (which I personally disagree with)
If you plugged in the numbers that way, the answer comes out to 13.04%. So, the correct answer for your answer choices is c. 13%
Answer:
Statements A and D
Step-by-step explanation:
A. Since all of the values surrounding x = 0.5 reflect across that point, there is a line of symmetry at x = 0.5
B. This is not a y intercept since in the point (-12,0) the x value is not zero and at y intercepts, it should be zero.
C. Same thing from statement B, the y value for the x intercepys should be zero, not 4 or -3.
D. To help visualize this, take the slope of the secant line from x = -4 to x = 0.
(8 - (-10))/(-4 - 0) = 18/(-4) or -9/2. Since the slop is negative, the function is decreasing on this interval.