Answer:
D: 12
Step-by-step explanation:
The entire segment KI is composed of the segments KJ and JI. So:

We know that KI is 15.
KJ is (2x-15) and JI is (2x-6). Substitute:

Solve for x. Combine like terms:

Add 21 to both sides:

Hence, the value of x is:

We know that JI is 2x-6.
We will substitute 9 for x to find JI. So:

Hence, our answer is D.
Answer:
C. The afternoon temperature was 6 degrees above the night temperature.
Step-by-step explanation:
this is correct because the 6 is 6 more than 0.
Answer:
48°
Step-by-step explanation:
In triangle CYZ, angles Y and C are complementary, so ...
(5x +22) + (12x) = 90
17x +22 = 90
17x = 68
x = 4
The angle of interest is 12x° , so has measure
12·4° = 48°
Answer:
Area = 35
Step-by-step explanation:
Triangle formula= Base x Height divided by 2.
The base is the distance between the x-axis(-4 and 6) which is 10.
The height is the y axis distance(2 and 9) which is 7.
10 x 7 = 70
70/2 = 35