9514 1404 393
Answer:
16.8°
Step-by-step explanation:
The Law of Cosines can be rearranged to give the angle measure.
angle Q = arccos((p² +r² -q²)/(2pr))
angle Q = arccos((690² +450² -290²)/(2×690×450))
angle Q = arccos(594500/621000) ≈ 16.7985°
The measure of angle Q is about 16.8°.
Answer: B
You can find slope by using the slope formula. Because we are already given two coordinate points, we can use that to find our slope. The slope formula is 
. This also refers to 
or 10/-4 or -5/2. Any coordinate with the x-value as 0 means that that coordinate is the y-intercept. Because (0,5) has 0 as its x-value, the y-intercept is 5.
Answer:
-3x - 30
Step-by-step explanation:
Distribute (multiply) the -3 to everything in the parentheses.
-3 (x + 10)
-3 * x = -3x -3 * 10 = -30
Answer: -3x - 30
Factors of 36 that differ by 9 are 12 and 3;
<span>12*3 = 36 </span>
<span>Or you could write x(x - 9) - 36 = (x - 12)(x + 3) = 0 </span>
<span>The number was 12</span>
