Answer:
k = 4
Step-by-step explanation:
Step 1: Write equation
-3k - 9 = -21
Step 2: Solve for <em>k</em>
- Add 9 to both sides: -3k = -12
- Divide both sides by -3: k = 4
Step 3: Check
<em>Plug in k to verify it's a solution.</em>
-3(4) - 9 = -21
-12 - 9 = -21
-21 = -21
Answer:
5, 8, and 9
Step-by-step explanation:
If the function is to be factorable, then k must be values which have factors that add to 6.
6 can be added as 1+5, 2+4, and 3+3. These pairs of factors multiply to 5, 8, and 9.
Answer:
x = 8.5
Step-by-step explanation:
You have all three angles already, so it's easy: 90°, (4x - 8)°, (6x + 13)°
The sum of all angles is 180°
90 + (4x - 8) + (6x + 13) = 180
10x + 95 = 180
- 95 -95
10x = 85
x = 8.5
