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Arte-miy333 [17]

3 years ago

10

Please help Me!!! I will try to give brainliest

2 answers:

iogann1982 [59]3 years ago

6 0

9514 1404 393

Answer:

D. 30

Step-by-step explanation:

3 3/4 inches on the map is 15/4 inches = 15×(1/4 inch).

Then the actual distance is 15×(2 miles) = 30 miles.

Mandarinka [93]3 years ago

3 0

Answer:

D) 30

Step-by-step explanation:

1/4 inch = 2 miles

How many 1/4's do you have?

3 3/4 inches= 15/4 inches

15 x 2 = 30

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Suppose that E and F are two events and that P(E)=0.3 and P(F|E)=0.5. What is P(E and F)?

Sergio [31]

E and F are two events and that P(E)=0.3 and P(F|E)=0.5. Thus, P(E and F)=0.15

Bayes' theorem is transforming preceding probabilities into succeeding probabilities. It is based on the principle of conditional probability. Conditional probability is the possibility that an event will occur because it is dependent on another event.

P(F|E)=P(E and F)÷P(E)

It is given that P(E)=0.3,P(F|E)=0.5

Using Bayes' formula,

P(F|E)=P(E and F)÷P(E)

Rearranging the formula,

⇒P(E and F)=P(F|E)×P(E)

Substituting the given values in the formula, we get

⇒P(E and F)=0.5×0.3

⇒P(E and F)=0.15

∴The correct answer is 0.15.

If, E and F are two events and that P(E)=0.3 and P(F|E)=0.5. Thus, P(E and F)=0.15.

Learn more about Bayes' theorem on

brainly.com/question/17010130

#SPJ1

4 0

2 years ago

The Earth has a diameter

mrs_skeptik [129]

Answer:

<em>L = 24,873.6 miles</em>

Step-by-step explanation:

<u>Length of the Circumference</u>

Given a circle of radius r, the length of the circumference, or line surrounding the shape is:

$L =2\pi\cdot r$

The Earth has a diameter of 7,917.5 miles. The radius is half the diameter:

r=7,917.5/2=3,958.75 miles

Assuming a plane flies around the equator at ground level, the distance it would travel is:

$L =2\pi\cdot 3,958.75\ miles$

L = 24,873.6 miles

4 0

3 years ago

W/5=3 what does w equal

m_a_m_a [10]

Answer:

w=15

Step-by-step explanation:

w/5=3

multiply by 5 on both sides

w=3*5

∴ w=15

7 0

4 years ago

Read 2 more answers

A runner jogged 4 miles in ten laps around a circular

dybincka [34]

Answer:

.1273 mi = 627.2 feet

c = 2 $\pi$ r

.4 = 2 $\pi$ r

r = $\frac{.4}{2\pi }$

r = $\frac{.2}{\pi }$

d = $\frac{.4}{\pi }$

d = .1273 mi = 627.2 feet

Step-by-step explanation:

4 0

3 years ago

The Bradenton Post polled 1,356 adults in the city to determine whether they wet their toothbrush before they put toothpaste on

natulia [17]

Answer:

The mean is 0.54 and the standard deviation is 0.0135.

Step-by-step explanation:

i) the mean of the sampling distribution is 0.54

ii) the mean for the sampling distribution, p = 0.54

iii) therefore for the sampling distribution, q = ( 1 - 0.54) = 0.46

iv) the sample size of the distribution, n = 1356

v) $the\hspace{0.1cm} standard\hspace{0.1cm} deviation\hspace{0.1cm} s = \sqrt{\frac{p\times q}{n} } = \sqrt{\frac{0.54\times 0.46}{1356} } = 0.0135$

4 0

4 years ago