Answer:
-(x - 6)(x - 7).
Step-by-step explanation:
-x^2+ 13x - 42
= - (x^2 - 13x + 42
= -(x - 6)(x - 7)
Tg?no dont understand this question
Answer:
If we look at ΔBDH, we notice that m∠BHG has to be 108 - 36 - 39 = 105°. Because x and ∠BHG are a linear pair we know that x = 180 - ∠BHG = 180 - 105 = 75°.
The formula for volume is V = (L)(W)(H). Length, width, and height are multiplied together. In this case, height is thickness. Since we are given the total area, length, and width, we just need to solve for the height/thickness. Plug in the given values:
225 = (25)(18)(H)
225 = 450*H
H = 225 ÷ 450
H = 0.5
The concrete slab is 0.5 feet thick.