The answer would be your last option, D, 168 cm sq
Hope this helped!
Step-by-step explanation:
As you have done till
3p + 8 = 20
3p = 20 - 8
3p = 12
p = 12 / 3 = 4
since it travel at a constant speed. Calculate first its
speed of descent.
S = -3/4 mile / 1 ½ hr
S = -0.5 mile an hour
So the position of the diving bell relative to sea level 1
hour after it began its descent is
D = (0.5 mile/ hr) x 1 hr = - 0.5 mile
Answer:
17
Step-by-step explanation:
The equation of a trapezoid is (a + b)/2 * h. So let's reverse the equation and divide the area by the height, 112/8 = 14. Now we should multiply it by 2, so we can get what a + b equaled. 28 = 11 + b
b = 17
Start with parenthesis so that will be 7x -21so then you will get 4x = 7x -21 then you will subtract 7x and 4x and you will get -3x = -21 and your answer is 7 because both numbers are a negative and that will equal a positive.
