Answer:
Step-by-step explanation:
base length b = 3 in
slant height L = 3 in
base area = b² = 3² = 9 in²
lateral area = 4·½bL = 4·½·3·3 = 18 in²
surface area = base area + lateral area = 27 in²
Answer:
216 marbles bought altogether
Step-by-step explanation:
small m- 10
large m- 8
10×12+8×12=
120+96
= 216
Step-by-step explanation:
v=s/t
0<t represents ie s
Answer:
Minutes Fraction of an hour
22 0.367
23 0.383
24 0.400
25 0.417
Step-by-step explanation:
Answer:
$8,711.99
Step-by-step explanation:
The formula for calculating the compound interest in expressed as;
A =P(1+r/n)^nt
Principal P = $4000
r is the rate = 7.2% = 0.072
t is the time = 15years
n = 1/12
Substitute
A = 4000(1+0.072(1/12))^15/12
A = 4000(1+0.072(12))^1.25
A = 4000(1+0.864)^1.25
A = 4000(1.864)^1.25
A = 4000(2.1779)
A = 8,711.99
Hence the final investment after 15years is $8,711.99