Answer:
49b^2 -36 = (7b -6)(7b +6)
so because there you missed some signs in these wrote choices
hope helped
Step-by-step explanation:
Answer:
55
Step-by-step explanation:
20% is the same as 1/5, so we can multiply 11 by 5:
11*5=55
Answer:
Meee :)
Step-by-step explanation:
what do you need help with?
Well just plug the two points in... y=7 x=2
3(7) + 2= 5
is that true or not?
3(7)
21
21+2= 23
23 is not equal to 5... so no it does not pass through the point (2,7)
Answer:
12 trips
Step-by-step explanation:
Given;
Dimension of cone shapef pile of earth;
height h = 12 ft = 4 yards
diameter d = 30 ft = 10 yards
radius r = d/2 = 10/2 = 5 yards
The volume of a cone V;
V = (1/3)πr^2 h
Substituting the given values;
V = (1/3) ×π × 5^2 × 4 cubic yards
V = 104.72 cubic yards
Given that a dump truck have a capacity of 9 cubic yards.
Vc = 9 cubic yards
Number of trips it will take is;
N = Volume of earth pile/truck capacity
N = V/Vc
Substituting the values;
N = 104.72/9
N = 11.64
N ≈ 12 trips
Therefore, the truck will make 12 trips
