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4 years ago

What are some prime numbers to create a product of four

1 answer:

8 0

Since a product in maths means the result after multiplying numbers, you need to multiply 2 prime numbers and get 4.

If we look at the prime numbers: 2, 3, 5, 7, 11, etc, we see that the only number we can multiply to get 4 is 2, or, in other words, the only multiplication of prime numbers we can do to get four is 2*2=4.

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As an aid to the establishment of personnel requirements, the director of a hospital wishes to estimate the mean number of peopl

alexandr402 [8]

This Question is Incomplete

Complete Question

As an aid to the establishment of personnel requirements, the director of a hospital wishes to estimate the mean number of people who are admitted to the emergency room during a 24-hour period. The director randomly selects 64 different 24-hour periods and determines the number of admissions for each. For this sample, X = 396 and S = 100. Using the sample standard deviation as an estimate for the population standard deviation, what size sample should the director choose if she wishes to estimate the mean number of admissions per 24-hour period to within 1 admission with 99% reliability, what size sample should she choose?

Answer:

Sample size n = 16

Step-by-step explanation:

We use the formula for Margin of Error for the question

Margin of Error = z × Standard deviation/√n

Margin of Error = 1

z score for 99% confidence interval = 2.576

Standard deviation = 100

1 = 2.576 × 100/√n

1 × √n = 257.6

√n = 257.6/1

n = √257.6

n = 16.049922118

Approximately = 16

Therefore, the sample size = 16

4 0

4 years ago

1,220,000,000 in scientific notation? 0.0287 in scientific notation?

ExtremeBDS [4]

Answer:
= 1.22 × 109
(scientific notation)

= 1.22e9
(scientific e notation)

= 1.22 × 109
(engineering notation)
(billion; prefix giga- (G))

= 1220000000
(real number)
_________________________________________________

Answer:
= 2.87 × 10-2
(scientific notation)

= 2.87e-2
(scientific e notation)

= 28.7 × 10-3
(engineering notation)
(thousandth; prefix milli- (m))

= 0.0287
(real number)

6 0

3 years ago

Read 2 more answers

A chord of a circular clock is 48 inches long, and its midpoint is 7 inches from the center of the circle. What is the radius of

Sphinxa [80]

ANSWER

The radius is 25 inches

EXPLANATION

From the diagram, the radius of the circle is AC.

From the Pythagoras Theorem,

${r}^{2} = {7}^{2} + {24}^{2}$

$r^{2} = 49 + 576$

Simplify

$r^{2} = 625$

Take positive square root,

$r = \sqrt{625}$

$r = 25$

Hence the radius is 25 inches

8 0

3 years ago

A customer owes $33.63 in transaction fees and he/she gives you $40.00. how much change should the customer receive back?

Nataliya [291]

The customer should receive $6.37 back

3 0

3 years ago

A mother earned $8750.00 from royalties on her cookbook. She set aside 20% of this for a down payment on a new home. The balan

Masteriza [31]

The problem statement is not clear regarding which money is invested. We will assume it is the 80% of $8750 that is set aside for future education. That amount is

... 0.80 × $8750 = $7000

If x represents the amount invested at 7%, then the total interest earned is

... (7000 -x)×4% + (x)×7% = 420

... 280 +0.03x = 420

... x = 140/0.03 ≈ 4666.67

$4666.67 was invested at 7%.

$2333.33 was invested at 4%.

5 0

4 years ago