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3 years ago

There are 276 nickels. How many whole dollars can be made from this and with how many nickels left over?

1 answer:

6 0

1 nickel = 5 cents
1 dollar = 20 nickels

You can make 13 dollars plus 16 nickels left over

20 * 13 = 260
then 260 + 16 = 276

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If you flip three fair coins, what is the probability that you’ll get all three heads?

Sladkaya [172]

Answer:

3/6

Step-by-step explanation:

no idea if its right

5 0

3 years ago

Assume that a company hires employees on Mondays, Tuesdays, or Wednesdays with equal likelihood.a. If two different employees ar

horsena [70]

Answer:

$P(A) = \frac{1}{9}$

$P(B) = \frac{1}{3}$

$P(C) = \frac{1}{729}$

Step-by-step explanation:

We know that:

Only employees are hired during the first 3 days of the week with equal probability.

2 employees are selected at random.

So:

A. The probability that an employee has been hired on a Monday is:

$P(M) = \frac{1}{3}$ .

If we call P(A) the probability that 2 employees have been hired on a Monday, then:

$P(A) =P(M\ and\ M)\\\\P(A)=( \frac{1}{3})(\frac{1}{3})\\\\P(A) = \frac{1}{9}$

B. We now look for the probability that two selected employees have been hired on the same day of the week.

The probability that both are hired on a Monday, for example, we know is $P(A) = \frac{1}{9}$ . We also know that the probability of being hired on a Monday is equal to the probability of being hired on a Tuesday or on a Wednesday. But if both were hired on the same day, then it could be a Monday, a Tuesday or a Wednesday.

$P(B) = \frac{1}{9} + \frac{1}{9} + \frac{1}{9}\\\\P(B) = \frac{1}{3}$ .

C. If the probability that two people have been hired on a specific day of the week is $3(\frac{1}{3}) ^ 2$ , then the probability that 7 people have been hired on the same day is:

$P(C) = (\frac{1}{3}) ^ 7 + (\frac{1}{3}) ^ 7 + (\frac{1}{3}) ^ 7\\\\P(C) = \frac{1}{729}$

D. The probability is $\frac{1}{729}$ . This number is quite close to zero. Therefore it is an unlikely bastate event.

6 0

2 years ago

Number 3. What is the value of x?

kodGreya [7K]

Answer:

the value of x would be 7

Step-by-step explanation:

because im smartttt

7 0

2 years ago

A group of students auditioned for a theater performance and 3/4 of the group less six students made up the cast of 42 students.

LenKa [72]

Answer:

3/4x-6=42

x=64

Step-by-step explanation:

Let the number of students be x hence 3/4 of this number will be 3/4x

Since the number was 42 if they were 3/4x less six, it means minus six hence

3/4x-6=42

Therefore, the equation will be

3/4x-6=42

Solving the equation

3/4 x=42+6=48

3/4x=48

X=62

8 0

3 years ago

What coefficients do you need to balance the following equation?

Mandarinka [93]

Answer:

4,3,2,6

Step-by-step explanation:

this is because all the atoms are in same number in reactants and products

6 0

2 years ago