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nasty-shy [4]
3 years ago
12

Janet is 3 years older than her sister Julia Janice brother is 8 years old younger than their sister Julia the sum of all of the

ir ages is 55 years old how old are they
Mathematics
1 answer:
Allushta [10]3 years ago
4 0

Answer: It would be 11 years old

Step-by-step explanation: uJst in case you still

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Which of the following expressions is not equivalent to <br> 2(b+​8)?
maksim [4K]

the awser is (-2)(8 + 6) + (-3)

7 0
3 years ago
A coyote can run up to 43 miles per hour while a rabbit can run up to 35 miles per hour.write two equivalent expression and then
yaroslaw [1]
D=s*t
distaance=speed times time

cd=coyote distance*time=ds*dt
rd=rabbit diatance*time=rs*rt

given
t=6 for all, so dt=rt=6

and ds=43
rs=35


cd=43*6=258miles
rd=35*6=210miles

how much more?
258-210=48

48 more miles
5 0
3 years ago
100 Brainliest up for grabs to person who can answer all of these with no links:
kogti [31]

Using a discrete probability distribution, it is found that:

a) There is a 0.3 = 30% probability that he will mow exactly 2 lawns on a randomly selected day.

b) There is a 0.8 = 80% probability that he will mow at least 1 lawn on a randomly selected day.

c) The expected value is of 1.3 lawns mowed on a randomly selected day.

<h3>What is the discrete probability distribution?</h3>

Researching the problem on the internet, it is found that the distribution for the number of lawns mowed on a randomly selected dayis given by:

  • P(X = 0) = 0.2.
  • P(X = 1) = 0.4.
  • P(X = 2) = 0.3.
  • P(X = 3) = 0.1.

Item a:

P(X = 2) = 0.3, hence, there is a 0.3 = 30% probability that he will mow exactly 2 lawns on a randomly selected day.

Item b:

P(X \geq 1) = 1 - P(X = 0) = 1 - 0.2 = 0.8

There is a 0.8 = 80% probability that he will mow at least 1 lawn on a randomly selected day.

Item c:

The expected value of a discrete distribution is given by the <u>sum of each value multiplied by it's respective probability</u>, hence:

E(X) = 0(0.2) + 1(0.4) + 2(0.3) + 3(0.1) = 1.3.

The expected value is of 1.3 lawns mowed on a randomly selected day.

More can be learned about discrete probability distributions at brainly.com/question/24855677

6 0
2 years ago
If |x| = 2 does X = 2 or x = -2? What is the solution to x = -2?
Effectus [21]
Both solutions are x<span> = 2 and x = -2 are correct

because
</span>when x = 2 ,  |2| = 2
and 
<span>when x = -2, |-2| = 2

hope it helps</span>
7 0
3 years ago
Please help me out with this
tekilochka [14]
Yes they are similar
7 0
2 years ago
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