Anumber is chosen at random from the numbers -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5. then the probability that square of this number is less than or equal to 1 is

ANSWER:  

The probability of getting a number whose square is less than or equal to 1 is

SOLUTION:

Given, a number is chosen at random from the numbers -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5.

Then we have to find the probability that square of this number is less than or equal to 1 is.

We know that, probability of any event is number of favorable outcomes divided by total possible outcomes.

Now, let us see the favorable outcomes,

From the given set, there exists only three numbers whose square is less than or equal to 1, they are -1, 0, 1. Remaining all numbers have their squares greater than 1.

So, number of favorable outcomes = 3

And, Total number of possible outcomes = 11 [ since there are 11 numbers]

Now, probability =

=

Hence, the probability of getting a number whose square is less than or equal to 1 is

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500

you can't solve x because it is 2 linear equation and you only have one equation