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3 years ago

12 for charity walk 3 miles how much did his cousin pay per mile

Mathematics

2 answers:

WITCHER [35]3 years ago

8 0

His cousin paid 4 per mile. You have to find the unit rate and you find that by dividing 12 by 3 which gives you 4.

JulsSmile [24]3 years ago

3 0

Thirty six dollars cause 12times 3 36

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A triangular pyramid has the same base and height as a triangular prism. The volume of the prism is 66 cubic inches. What is the

notka56 [123]

The volume of the triangular prism is 66 cubic inches.
In order for us to know the volume of the triangular pyramid, first we need to know the ratio of the volume of triangular prism and the volume of the triangular pyramid.

Volume of the pyramid = 1/3 * volume of the prism.
Volume of the pyramid = 1 / 3 * 66
<span>Volume of the pyramid = 22 cubic inches.
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So the volume of the triangular pyramid is 22 cubic inches.

5 0

3 years ago

It is believed that 3% of people actually have this predisposition. The genetic test is 99% accurate if a person actually has th

fiasKO [112]

Answer:

Required Probability = 0.605

Step-by-step explanation:

Let Probability of people actually having predisposition, P(PD) = 0.03

Probability of people not having predisposition, P(PD') = 1 - 0.03 = 0.97

Let PR = event that result are positive

Probability that the test is positive when a person actually has the predisposition, P(PR/PD) = 0.99

Probability that the test is positive when a person actually does not have the predisposition, P(PR/PD') = 1 - 0.98 = 0.02

So, probability that a randomly selected person who tests positive for the predisposition by the test actually has the predisposition = P(PD/PR)

Using Bayes' Theorem to calculate above probability;

P(PD/PR) = $\frac{P(PD)*P(PR/PD)}{P(PD)*P(PR/PD)+P(PD')*P(PR/PD')}$

= $\frac{0.03*0.99}{0.03*0.99+0.97*0.02}$ = $\frac{0.0297}{0.0491}$ = 0.605 .

7 0

3 years ago

An oil company is drilling for oil at three sites. According to geological tests, the probabilities of

astra-53 [7]

Answer:

Step-by-step explanation:

Given

Probability of finding oil at site 1 is 0.30

Probability of finding oil at site 2 is 0.15

Probability of finding oil at site 3 is 0.20

Probability of Finding oil at all three sites

i.e. oil is present in all three sites simultaneously

$=0.3\times 0.15\times 0.20=0.009$

Probability of not finding oil at any of these sites $=(1-0.3)\cdot (1-0.15)\cdot (1-0.2)=0.476$

Complement of Finding oil at all three sites is equivalent to not finding the oil at all three sites

i.e. $A'\cap B'\cap C'$

Complement of not finding oil at any of the sites is equivalent to probability of finding oil at any of the given sites

$A\cup B' \cup C'$ or

$'\cup B \cup C'$ or

$A'\cup B' \cup C$

8 0

3 years ago

Please answer this as quick as you can

vampirchik [111]

Answer:

Step-by-step explanation:

3 and 2 for what i see with the question i don't know if the blue is blocking a tick but i think its 2 and 3 tell me if there a tick on where the blue started so then i might change my answer

8 0

3 years ago

Tutu and Pete go hiking. Tutu brings 7/10 liter of water. Pete brings 500 millimeters of water. How many more millimeters of wat

shutvik [7]

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1 liter of water equals 1000 milliliters.

To find who has more water, you need to convert (the unit) of each person to either liters or milliliters.

Since it asks for millimeters, I'm going to convert Tutu's 7/10 liters to milliliters. Since there are 1000 milliliters in every liter, you have to multiply 7/10 by 1000. 7/10 multiplied by 1000 is 700.

So Pete has 500 milliliters of water and Tutu has 700 milliliters of water.

Now you need to find the difference of 700 and 500 by subtracting.

700-500=200

Tutu bought 200 more milliliters of water than Pete.

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3 0

3 years ago