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Softa [21]
3 years ago
7

Amy rolls a number cube ten times and gets 3 four times! If she rolls the number cube 240 times, how many times should she get a

3 (Hint: Should her results be used, or the theoretical probability?).
Mathematics
1 answer:
Iteru [2.4K]3 years ago
7 0

Answer:

Amy should not use her previous luck of rolling a 3 four times because theoretical probability remains the same even after an event favoring one side has occurred by chance.

Step-by-step explanation:

Assuming that this number cube has 6 sides, there is only 1 side that has a 3 on it. For this reason, every time the cube is rolled there is a 1 in 6 chance that the number will be a 3. If she rolls the number cube 240 times, 1 out of 6 rolls would be a 3. This means that 240/6 equals the number of times she would get a 3. Moreover, Amy would role the number 3 on 40 different times after rolling the cube for a total of 240.

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"Use the chart above to determine the premium for 10 year term insurance. $12,000 policy for a 35-year-old female. Premium = ___
JulsSmile [24]
Option C) 63.48

The footnotes indicate that for female you have to use the rate for a male three years younger.

Then you have to use the rate for 32-year-old males, which is 5.29.

That rate is for evary $1,000 face value, the you have to calculate the premium in this way:

Premium = [5.29/1000]*$12.000 = 63.48


8 0
3 years ago
Sebastian was in a hotel lobby and took the elevator up 7 floors to his room. Then he took the elevator down 9 floors to the par
Arte-miy333 [17]

because he went up 7 floors then he went 9 floors down

up means positive and down means negative

so that how it work

The answer is A

What is Sebastian’s error?

Sebastian should have used –9 and 7.

hope it helps everyone

~Reem

3 0
3 years ago
Read 2 more answers
An equation of a circle is given as (x + 6)² + (y − 7)² = 81. Find the center and radius of the circle. Show all work to receive
Salsk061 [2.6K]
Center is (-6,7) and radius is 9. A circle with a center at (h,k) and a radius of r has the equation (x-h)^2 + (y-k)^2=r^2 so h= -6 k= 7 r is 9 you just work back wards, what two numbers multiplied gives you 81? Well 9
4 0
3 years ago
Solve each radical equation. Be sure to check your solutionsa)√(2x-3)=11b)∛(6-x)=-3
leva [86]

Answer:

a) x = 62

b) x = 33

Step-by-step explanation:

Hi there!

a) Let´s write the equation:

√(2x-3) = 11

Square both sides

2x - 3 = 121

add 3 to both sides of the equation

2x = 124

divide by 2 both sides

x = 62

Let´s check:

√(2x-3) = 11

x = 62

√(2(62)-3) = 11

√(124-3) = 11

√121 = 11

11 = 11

x = 62 satisfies the equation

b) Let´s write the equation:

∛(6 - x) = -3

Cube both sides

6 - x = -27

subtract 6 to both sides

-x = -27 - 6

-x = -33

divide by -1 both sides

x = 33

Now, let´s check the result:

∛(6 - x) = -3

x = 33

∛(6 - 33) = -3

∛(-27) = -3

-3 = -3

x = 33 satisfies the equation

8 0
3 years ago
What is -2 + 7x = 12
8090 [49]

Answer:

easy the answer is

Step-by-step explanation:

-2 + 7x = 12

+2 +2

7x + 14

14 / 7x = 2

5 0
3 years ago
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