Answer:
Ari's is less than Davids
Ari=18.75
David=24.00
Step-by-step explanation:
Answer:
see explanation
Step-by-step explanation:
Given A is directly proportional to r² then the equation relating them is
A = kr² ← k is the constant of proportion
To find k use the condition when r = 5, A = 75 , then
75 = k × 5² = 25k ( divide both sides by 25 )
3 = k
A = 3r² ← equation of proportion
(a)
when r = 4, then
A = 3 × 4² = 3 × 16 = 48
(b)
when A = 147 , then
147 = 3r² ( divide both sides by 3 )
49 = r² ( take the square root of both sides )
r =
= 7
V = 1/3Bh
B = 1/2(b1 + b2)t
V = 1/3[1/2(b1 + b2)t] * h
h = 24
b1 = 13
b2 = 29
t = ?
V = 2856
Substitute:
2856 = 1/3[1/2(13 + 29)t](24)
2856 = 1/6(42)(24)t
2856 = 7(24)t
2856 = 168t
t = 2856/168 = 17 in height of the trapeziod
Answer:
C
Step-by-step explanation:
-4/3 x - 6 = -26
Add 6 to both sides
-4/3 x = -20
Divide both sides by -4/3, which is the same as multiplying by reciprocal
-20 * -3/4 = 15
x = 15
Answer:
24 and 28
Step-by-step explanation:
just keep adding 4 and you will get these 2 numbers between 20-30