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kondor19780726 [428]
3 years ago
14

If you roll a number cube 22 times about how many times do you expect to roll a numeber Less than 4?

Mathematics
1 answer:
frozen [14]3 years ago
8 0

Answer:

About 7 times

Step-by-step explanation:

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Which is an arithmetic sequence
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2 years ago
The sum of x and it’s opposite is always zero?
jeka94

Answer:

1) Let's consider the first case with the number 0 the oppose is also 0 and we have that 0-0=0 so then applies

2) Now let's consider any real number a no matter positive or negative we will have that:

a-a =0

Or in the other case:

-a -(-a) =-a +a=0

So then we can conclude that the expression is a general rule and is true

Step-by-step explanation:

For this case we can verify if the following expression is true or false:

The sum of x and it’s opposite is always zero?

If we want to proof this we need to show that for any number is true.

1) Let's consider the first case with the number 0 the oppose is also 0 and we have that 0-0=0 so then applies

2) Now let's consider any real number a no matter positive or negative we will have that:

a-a =0

Or in the other case:

-a -(-a) =-a +a=0

So then we can conclude that the expression is a general rule and is true

5 0
3 years ago
Number of passengers who arrive at the platform in an amtrack train station for the 2 pm train on a saturday is a random variabl
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z1 = (80 - 180)  / 25  =  = -100/25  = -4
z2 =  (280-180) / 25  =  4
Required P( -4 < z < 4)  from the tables is  >99.9%

b
z1 = 130-180 / 25 =  -2
z2 =  230-180 / 25  = 2

from tables probability is 2* 0.4773  =  95.46 %
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3 years ago
Solve for x.<br><br> 7 - (2x + 11) + 3(3 - x) = 20
zvonat [6]

Answer:

your answer should be x = -3

7 0
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