Question

Please help!

Answer 1

With?

Answer 2

here I will post the whole question. I am terrible at algebra:(

Answer 3

Try to hurry. Onlow battery

Answer 4

Task 1—Normal Distribution

Scores on a statewide standardized test are normally distributed with a mean of 12.89 and a standard deviation of 1.95. Certificates are given to students whose scores are in the top 2% of those who took the test. This means that they scored better than 98% of the other test takers. Marcus received his score of 13.7 on the exam and is wondering why he didn’t receive a certificate. Show all work to determine whether Marcus’ score was high enough to earn a certificate. Write a letter to Marcus explaining whether or not he will be receiving a certificate. Include a brief summary of your statistical analysis in your letter.

Task 2—Non-Linear Systems of Equations

Create a system of equations that includes one linear equation and one quadratic equation.

Part 1. Show all work to solving your system of equations algebraically.

Part 2. Graph your system of equations, and show the solution graphically to verify your solution.

Task 3—Graphing Rational Functions

Create a rational function with a linear binomial in both the numerator and denominator.

Part 1. Graph your function using technology. Include the horizontal and vertical asymptotes and the x- and y-intercepts on your graph. Label the asymptotes and intercepts.

Part 2. Show all work to identify the vertical asymptote, the x-intercepts, and the y-intercept.

Task 4—Solving Rational Equations

Using the equation below as a model, fill in numbers in the place of a and b to create a rational equation that has an extraneous solution.

x plus a over ax = b over x
Part 1. Show all work to solve for x in the equation and check the solution.

Part 2. Explain how to identify the extraneous solution and what it means.

Task 5—Polynomial Division and the Remainder Theorem

Create a quadratic polynomial function f(x) and a linear binomial in the form (x − a).

Part 1. Show all work using long division to divide your polynomial by the binomial.

Part 2. Show all work to evaluate f(a) using the function you created.

Part 3. Use complete sentences to explain how the remainder theorem is used to determine whether your linear binomial is a factor of your polynomial function

Task 6—Polynomial Identities

Pick a two-digit number greater than 25. Rewrite your two-digit number as a difference of two numbers. Show how to use the identity (x − y)2 = x2 − 2xy + y2 to square your number without using a calculator.

Answer 5

sorry I am new to openstudy and I am trying to learn how everything works

Answer 6

It's alright. My laptop is about to die so just keep bumping your question every 5-6 minutes and you should receive some help.

Answer 7

You know the mean is 12.89 and the standard deviation is 1.95
So if you add and subtract 1.95 with 12.89, you get 10.94 and 14.84
And these two numbers represent the "normal"/ average range.
So scoring between 10.94-14.84 would be average
Since Marcus scored 13.7, it is still part of the average range which means he didn't score in the top 2% which is why he didn't receive a certificate

Answer 8

just remember for mean.
Add up all numbers and divide the sum by the # of numbers there are

Standard deviation is how far away the "normal" range is from the mean

Answer 9

#2
your graph showing your equations for the line and the circle, and how you prove they work algebraically is to sub in the point (4,-2) into both equations