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Shkiper50 [21]
3 years ago
5

A stack of cards is numbered 1 to 21. Kelly pulls one card from the stack. What is the best approximation for the probability th

at the card is an even number?
5%
21%
48%
52%
Mathematics
1 answer:
ASHA 777 [7]3 years ago
8 0
The correct answer is 48%

There are 10 even numbers from 1 to 21.

That makes the probability of an even number 10 out 21.

10 / 21 x 100 = 48%
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Estimate the quotient using compatible numbers.<br><br> 3,512 ÷ 9<br><br> 30<br> 400<br> 300<br> 40
madreJ [45]

Answer:

400. just use simple devision and it'll tell you.

5 0
2 years ago
A 14 inch pizza (diameter is 14) was cut in to 8 pieces. What is the angle measure of each slice? *
Luda [366]

Answer:

The angle for each slice is 45 degrees.

Step-by-step explanation:

In order to calculate the angle of each slice, we first need to calculate the total area of the pizza, because we will use that to find the area of each slice and as a result it's angle. To calculate the area of the pizza we must use:

pizza area = pi*r²

r = d / 2 = 14 /2 = 7 inches

pizza area = pi*(7)² = 153.86 square inches

Since the pizza was divided in 8 pieces, the area of each piece is given by the area of the pizza divided by the number of slices. We have:

slice area = pizza area  / 8 = 153.86 / 8 =19.2325 square inches

Each slice is a circle sector, therefore it's area is given by:

slice area = (angle*pi*r²)/360

Therefore we can solve for angle:

19.2325 = (angle*pi*7²)/360

angle*pi*49 = 6923.7

angle = 6923.7 / pi*49 = 45 degrees

The angle for each slice is 45 degrees.

4 0
3 years ago
The fox population in a certain region has a continuous growth rate of 6 percent per year. It is estimated that the population i
riadik2000 [5.3K]

Answer

a)

P(t) = 19100. e^{0.06t}

b) P(8) =30866

Step-by-step explanation

Use formula:

P(t) = P. e^{rt}

a)

Here, P = 19100

r = 6% = 0.06

P(t) = 19100. e^{0.06t}

b) t = 2008 - 2000 = 8

P(8) = 19100. e^{0.06\times 8}

P(8) = 19100. e^{0.48}

P(8) = 19100\times 1.616\\\\P(8) = 30,865.6\\\\P(8) \approx 30,866

6 0
2 years ago
a hardware store has 568 nails in 8 bins. each bin has the same number of nails. how many nails are in each bin? Luke solve this
stiks02 [169]

Answer:

No

Step-by-step explanation:

Because you have to multiply 568 x 8 to get 4084 but when u multiply it u get 2272

8 0
3 years ago
Solve the following equation system by graphing<br> X-Y=4<br> X+Y=2<br> What is the solution?
AfilCa [17]
<span>X-Y=4, 
X+Y=2 
-------------add
2x = 6
x = 3

X - Y =4
3 - Y = 4
Y = 3 - 4
Y = -1

solution (3 , -1)</span>
4 0
3 years ago
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