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3 years ago

14

How do u find tip amount from a bill of $67.51 and a tip of 20%

1 answer:

Troyanec [42]3 years ago

4 0

Answer:

$13.50 is the tip

OR

$81.01 is total bill

Step-by-step explanation:

total of bill multiplied by 20%

$67.51 x .20 = $13.50

For total bill amount:

$67.51 + $13.50 = $81.01

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Which of the quotients is equivalent to -5/8 select all that apply

Crank

Answer:

a b e

Step-by-step explanation:

not sure could be wrong

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2 years ago

According to a 2018 survey by Bankrate, 20% of adults in the United States save nothing for retirement (CNBC website). Suppose t

nalin [4]

Answer:

0.5981 = 59.81% probability that three or less of the selected adults have saved nothing for retirement

Step-by-step explanation:

For each adult, there are only two possible outcomes. Either they save nothing for retirement, or they save something. The probability of an adult saving nothing for retirement is independent of any other adult. This means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

20% of adults in the United States save nothing for retirement (CNBC website).

This means that $p = 0.2$

Suppose that sixteen adults in the United States are selected randomly.

This means that $n = 16$

What is the probability that three or less of the selected adults have saved nothing for retirement?

This is:

$P(X \leq 3) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3)$

In which

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 0) = C_{16,0}.(0.2)^{0}.(0.8)^{16} = 0.0281$

$P(X = 1) = C_{16,1}.(0.2)^{1}.(0.8)^{15} = 0.1126$

$P(X = 2) = C_{16,2}.(0.2)^{2}.(0.8)^{14} = 0.2111$

$P(X = 3) = C_{16,3}.(0.2)^{3}.(0.8)^{13} = 0.2463$

$P(X \leq 3) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) = 0.0281 + 0.1126 + 0.2111 + 0.2463 = 0.5981$

0.5981 = 59.81% probability that three or less of the selected adults have saved nothing for retirement

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3 years ago

Arrange the rational numbers in order from greatest to least. Select each rational number and drag up or down to change the posi

Pani-rosa [81]

Answer:

1/4, 0.4, 0.4/w line, and 4% I think

Step-by-step explanation:

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3 years ago

A local elementary school is selling tickets to a play. Ticket's cost $2 for kids and $3 for adults. The first day of sales, the

ioda

2x +3y =70
2(0) +3y=70
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3 years ago

Estimate the quotient.<br><br> 1,976 ÷ 3<br><br> 600<br> 50<br> 550<br> 60

Radda [10]

Answer:

600 is closest to the actual answer so pick that.

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2 years ago

Read 2 more answers