Answer:
Step-by-step explanation:84% of a contractor’s jobs involves electrical work. 75% of a contractor’s jobs involve plumbing work. Of the jobs that involve plumbing, 90% of the jobs also involves electrical work. Let E = jobs involving electrical work L = jobs involving plumbing work Suppose one of the contractor’s jobs is randomly selected. Using the sixth Excel worksheet, a) Find P(E). 0.84 b) Find P(L). 0.75 c) In words, what does E | L mean? d) Find P(E | L). e) Find P(E and L). f) Are E and L independent events? Why or why not? g) Find P(E or L). h) Are E and L mutually exclusive? Why or why not
Answer:
1/4
Step-by-step explanation:
Let x = number the spinner lands on
P(X = 1) = 1/4
P(X = 2) = 1/4
P(X = 3) = 1/4
P(X = 4) = 1/4
The spins are independent events as their probabilities are not affected by whether or not the other event happens
Therefore, the probability that you land on a number 2 given that your first spin landed on number 1 is still 1/4
Answer:
P = [2( l)+2(w)] / width of the rock
Step-by-step explanation:
row of rocks around his rectangular pool, this tells us we are finding the perimeter
The perimeter of a rectangle is given by
P = 2( l+w)
P = 2( l)+2(w)
But we know that the length takes into account the width of the rock so divide each side by the width of the rock
P = [2( l)+2(w)] / width of the rock
Answer:
Prism
B- A triangle cannot be "two polygons"
C- A cube also cannot be "two polygons"
D- A pyramid is not parallel.
Please find the attached graph.
Let x represent number of shirts and y represent number of caps.
We have been given that Mikhael, Hema, and 5 friends will help run their school's fundraiser. They will wear either a red shirt or a red baseball cap during the event.
Since there are 7 people in total, so total number of caps and shirts will be 7. We can represent this information in an equation as:
We are also told that Shirts cost $8 each and caps cost $4 each. So cost of x shirts would be and cost of y caps would be .
Since they want to spent exactly $40, so cost of x shirts and y caps will be equal to 40. We can represent this information in an equation as:
We can divide equation (2) by 4 as:
We can see from our attached graph that solution of this system is (3,4), therefore, 3 friends will wear shirts and 4 will wear caps to stay in the budget.