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Mademuasel [1]
3 years ago
9

There are about 5.28x108 people in North America. The area of the country is

Mathematics
1 answer:
topjm [15]3 years ago
6 0

Answer:

Each person will receive Land area = 0.467 millimeter

Step-by-step explanation:

Given as,

Total number of people in North America = 5.28 × 10^8

The area of the country is = 2.47 × 10² km = 2.47 × 10^5 meter

Now according to question , Land is divided equally among each people .

So, For 5.28×10^8 people , land available = 2.47×10^5 meter

Then For 1 people , land available = \frac{2.47 times 10^5 meter}{5.28 times 10^8}

Or , Land available = 4.67 × 10^-4 meter

or ,                           = 0.467 millimeter

Hence for each person , Land available is 0.467 millimeter .  Answer

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The distance between two cities is 220km. There are approximately 8km in 5 miles. What is the distance in miles?
Free_Kalibri [48]

So i did 220 ÷ 8 and got 27.5 then multiplied by 5 to find how many miles and its 137.5

7 0
3 years ago
Two faces of a six-sided die are painted red, two are painted blue, and two are painted yellow. The die is rolled three times, a
Keith_Richards [23]

Answer:

(a) 4/9

(b) 19/27

Step-by-step explanation:

The probability of each die turning up red or not turning red are:

P(R) =\frac{2}{6}= \frac{1}{3}\\P(O) =\frac{4}{6}= \frac{2}{3}

(a). Exactly one face up is red.

The odds of only the first die being red are:

P(A=R) =\frac{1}{3} *\frac{2}{3}* \frac{2}{3} \\P(1=R) =\frac{4}{27}

The same odds are valid for only the second or only the third die being red. Therefore, the probability that exactly one die turns up red is:

P(R=1) = 3*\frac{4}{27}\\P(R=1) = \frac{4}{9}

(b). At least one face up is red.

The probability that at least one die turns up red is the sum of the probabilities of exactly one (found in the previous item), two or all dice turning up red.

Following the same logic as in the previous item, the probability that exactly two dice turn up red is:

P(R=2) = 3*(\frac{1}{3}*\frac{1}{3}*\frac{2}{3})\\P(R=2) = \frac{2}{9}

The probability that all die turn up red is:

P(R=3) = \frac{1}{3}*\frac{1}{3}*\frac{1}{3}\\P(R=3)=\frac{1}{27}

Thus, the probability that at least one die turns up red is:

P= P(R=1)+P(R=2)+P(R=3) = \frac{4}{9}+\frac{2}{9}+\frac{1}{27}\\P=\frac{19}{27}

4 0
3 years ago
Determine the measure of angle a. PLEASE HELP ASAP!
wlad13 [49]

Answer:

D

Step-by-step explanation:

Remember that the sum of the interior angles of a triangle will always total 180.

Therefore:

(9x+6)+(74)+(16x)=180\\

Let’s solve for <em>x: </em>

Combine LIke Terms:

(9x+16x)+(74+6)=180

Add:

25x+80=180

Subtract 80 from both sides:

25x=100

Divide both sides by 25:

x=4

Therefore, the value of <em>x </em>is 4.

Now, to find A, we can substitute it for A.

A is measured by:

\angle A=9x+6

Substitute 4 for <em>x</em> and evaluate:

\angle A=9(4)+6=36+6=42\textdegree

Hence, our answer is D.

6 0
3 years ago
Which expression is equivalent to 4×4×4×4?
Lady bird [3.3K]
8*4 
I hope that helps !
So, 4*4*4*4 = 16+16 which is 32
4 0
3 years ago
I need to know how to do it in Distributive Property.
kotykmax [81]
A(b-c)=ab-ac

(1/7)(1/3h-1/2)=(1/7)(1/3h)-(1/7)(1/2)=1/21h-1/14

now we gots
6 and 1/7+1/21h-1/14
rearange
6 and 1/7-1/14+1/21h
make common denom which is 14
6 and 2/14-1/14+1/21h
6 and 1/14+1/21h

6 0
3 years ago
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