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Slav-nsk [51]
1 year ago
12

The scale of a map is 1 in. = mi. Find each length on the map

Mathematics
1 answer:
WITCHER [35]1 year ago
7 0

The question gives the relationship to be

1in=21mi

We will interpolate to solve the question.

First Question: 147 mi

\begin{gathered} \text{If 1 in = 21 mi} \\ x\text{ in = 147 mi} \end{gathered}

Cross multiplying,

undefined

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You roll a dice twice.<br> Find the probability of getting 3 in first throw and 5 in second throw.
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Answer:

1/6

Step-by-step explanation:

there are 6 faces on a dice so there's a 1 in 6 chance that you would roll a 3 on your second go there is still only a 1 out of 6 chance of getting a 5 because there is still 6 numbers you could roll on.

hope this helped

8 0
2 years ago
How are the diagonals of a parallelogram related?
NikAS [45]

Answer:

  they bisect each other

Step-by-step explanation:

<em>The diagonals of a parallelogram bisect each other</em>.

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If they are the same length, the parallelogram is a rectangle. If they cross at right angles, it is a rhombus.

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2 years ago
The lines represented by
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Answer:

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10 months ago
A bag contains some number of marbles. It is known that 20 of them are red. When 15 marbles are drawn, without replacement, we g
Llana [10]

Answer:

The total number of marbles in the bag is 50.

Step-by-step explanation:

Here, we have n trials, without replacement. So the hypergeometric distribution is used.

The mean of the hypergeometric distribution is:

E(X) = \frac{n*k}{N}

In which n is the number of items in the sample, k is the number of items in the population that are classified a success and N is the size of the population.

15 marbles are drawn:

This means that n = 15

A bag contains some number of marbles. It is known that 20 of them are red.

This means that k = 20, since a success is drawing a red marble.

Assuming E(X)=6 red, what is the total number of marbles in the bag?

We have to find N when E(X) = 6

So

E(X) = \frac{n*k}{N}

6 = \frac{15*20}{N}

6N = 300

N = \frac{300}{6}

N = 50

The total number of marbles in the bag is 50.

8 0
2 years ago
What is the answer to 25 = k/5; k =5
kumpel [21]
"k" would equal 125 if you were dividing (125/5), but if you were multiplying the answer would be 5 (5x5)
3 0
2 years ago
Read 2 more answers
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