champagnechimpanzee282

can someone help a sista out?? 

Find the measure of the red part of the figure.

Probability theory tells us that if the average time between events is k, the probability that x, the time between events, is between a and b is given by,

P(a ≤ x ≤ b) = ∫ ^b_a f(x) dx ------ equation (1)

f(x) = 0, x < 0 ------------- equation (2)

= ke^-kx , x ≥ 0 ------------ equation (2)

Suppose that at a busy intersection of a city, traffic accidents occur at an average rate of one every three months. After residents complained, changes were made to the traffic lights at the intersection. It has now been eight months since the changes were made and there have been no accidents.

1(a) Find f(x) for accidents are occurring at a rate one of every 3 months.

[Hint: use f(x) from equation (2)]

1(b) Were the changes effective or is the 8-month interval without an accident a result of chance?

[Hint: Compute P(x ≥ 8) by using f(x) from (a) and decide on the obtained

result.]

Determine whether the system of linear equations is consistent or dependent. If it is dependent, find the complete solution.

the regular selling price of an item sold in a store includes a margin of 62% based on selling price, during a sale, an item which cost the store 231.25 was marked down 47% for how much was the item sold

f(x)=3x^4+7x^3+x^2-7x-4

find the range of values of c for which f(x)=c has exactly two distinct real roots

I have the answers (its c>0 and -6.20<c<-0.037) but don't understand the problem... what is it asking? can you please provide a brief explaination to the answers? attached is the graph of f(x) which we are given

thank you so much !!!

Completely factor each of the following polynomials. step by step please in as much detail as possible, i wish to keep practicing these to really solidify this.

a.P(x) = x3 - 4x2 + x + 6


b.P(x) = x4 + 4x3 - 3x2 - 14x - 8

a. if (4,-9) belongs to y=f(x), state a point on its transformational graph. b. if (-3,12) belongs to y=f(x), state a point on its inverse.

WHAT IS 1+1=

PLEASE HELP!

here is the question

If –3 + i is a root of the polynomial function f(x), which of the following must also be a root of f(x)?

Solve the differential equation dy/dx= y(xy- 1) by using an appropriate substitution.

Can you please answer this question

Need answers for this test

determine points of intersection

pls give me the answer i need help

It is in the picture

Consider the function

Find (f•g)(x) and (g•f)(x). f(x)=8x-6, g(x)=5-3x

determine equation of a quadratic relation

Determine whether the function is even, odd, or neither.

Please answer

The table gives the value of Bianca’s saving account at the end of each of the first four years. Which best describes the terms of this investment?

help plssss!!!!!!

When do you use HLLS and SAAS for your equation 

The first and second one on this page.

I have a budget of ( per person) each for a recipe. The original serving size of my recipe is for people but my teacher wanted me to cater for people only. Using the ratio , how do I make modifications to the recipe in order to serve people instead of  people. 

Please help me with this problem!

solve sum ?