Answer:
2 nickels and 21 dimes
Step-by-step explanation:
0.05N + 0.1D = 2.2
N + D = 23
Let's use the substitution method. Solve the second equation for N.
N = 23 - D
Now where you see N in the first equation substitute N with 23 - D.
0.05(23 - D) + 0.1D = 2.2
1.15 - 0.05D + 0.1D = 2.2
0.05D = 1.05
D = 1.05/0.05
D = 21
Now substitute 21 for D in the second original equation and solve for N.
N + 21 = 23
N = 2
Answer: 2 nickels and 21 dimes

(8/4) divided by 100 equals .02
Information secrecy is the practice of hiding information<span> from certain individuals or groups who do not have the "need to know", perhaps while sharing it with other individuals. That which is kept hidden is known as the secret. Choose the answer that meet this definition</span>
The answer to this question is two
Answer:
7/15 is the probability of selecting a boy and a girl.
Step-by-step explanation:
Combination = nCr = n!/((n-r)!r!)
((7C1)(3C1))/(10C2)
= (7*3)/45
=21/45 = 7/15 the probability of selecting a boy and a girl.