Answer: A
Step-by-step explanation:

Steps to solve:
1/2hb = d²
~Divide 1/2h to both sides
b = 2d²/h
Best of Luck!
Answer:
y=-4x-2
Step-by-step explanation:
y-y1=m(x-x1)
y-14=-4(x-(-4))
y-14=-4(x+4)
y=-4x-16+14
y=-4x-2
Answer: 26!!
Step-by-step explanation: the average is like the mean which is all 4 numbers added together divided by 4. 26 times 4 is 104. 20 +42+16 = 78. 104 - 78 is 26 so the 4th number is 26. you can check the work by adding 20 42 16 and 26 together which equals 104. 104 divided by 4 is 26!! so our answer is correct!!