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mr_godi [17]
2 years ago
12

What is the area of a circle with a Radius of 4 and a Diameter of 2? (Its on Khan)

Mathematics
1 answer:
algol132 years ago
7 0

Answer:4^2≈50.26548

Step-by-step explanation:

   πr2.

   Where r is the radius and π≈3.14 , the ratio of a circle's circumference to    its diameter.

   Plugging in 4 from the radius, we get.

   42π

   ⇒16π inches.

   This is our exact answer. Alternatively, we can plug in 3.14 for π to get.

   50.26 inches.

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The nurse is taking care of a patient who has an order for Levaquin (Levofloxacin) 605 mg orally q6h. The pharmacy sends Levofla
MariettaO [177]

The nurse will give 12.1 milliliters of Levofloxacin

<h3>What are metric units?</h3>

These are the units that are used to measure quantities, and they can be converted among one another

The given parameters are:

  • Size = 605 mg
  • Dose = 50mg/5 mL

The number of milliliters the nurse will give is calculated by dividing the size by the dose, as follows:

n = \frac{Size}{Dose}

So, we have:

n = \frac{605mg}{50mg/mL}

Cancel out the common units

n = \frac{605}{50/mL}

This gives

n = \frac{605}{50}mL

Divide 605 by 50

n = 12.1 mL

Hence, the nurse will give 12.1 milliliters of Levofloxacin

Read more about unit factors at:

brainly.com/question/15369782

5 0
2 years ago
Solve for b.<br> 63 = 9b+ 54
tiny-mole [99]

Answer:

1

Step-by-step explanation:

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3 years ago
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Solve For x Help pleaassee
Mkey [24]

Answer:

x=4

Step-by-step explanation:

C+E=180

14x-8+132=180

14x=180-132+8

14x=56

x=4

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Use the figure and follow the directions below
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The answer is B

Step-by-step explanation:

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3 years ago
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A theory predicts that the mean age of stars within a particular type of star cluster is 3.3 billion years, with a standard devi
Luden [163]

Answer:

Null hypothesis:\mu \leq 3.3  

Alternative hypothesis:\mu > 3.3  

z=\frac{3.4-3.3}{\frac{0.4}{\sqrt{50}}}=1.768  

Since is a one right tailed test the p value would be:  

p_v =P(z>1.768)=0.039  

Step-by-step explanation:

Data given and notation

\bar X=3.4 represent the sample mean  

\sigma=0.4 represent the population deviation for the sample

n=50 sample size  

\mu_o =3.3 represent the value that we want to test  

\alpha represent the significance level for the hypothesis test.  

t would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

State the null and alternative hypotheses to be tested  

We need to conduct a hypothesis in order to determine if the mean is higher than 3.3, the system of hypothesis would be:  

Null hypothesis:\mu \leq 3.3  

Alternative hypothesis:\mu > 3.3  

Compute the test statistic  

We know the population deviation, so for this case is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:  

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}} (1)  

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

We can replace in formula (1) the info given like this:  

z=\frac{3.4-3.3}{\frac{0.4}{\sqrt{50}}}=1.768  

P value

Since is a one right tailed test the p value would be:  

p_v =P(z>1.768)=0.039  

6 0
2 years ago
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