answer in interval form

answer in interval form

I am having a lot of problems in this section of my class. the rest of problem → "Company ABC produces widgets. They have found that the cost, c(x), of making x widgets a quadratic function...

A salesperson finds that her sales average 40 cases per store when she visits 30 stores a week. Each time she visits an additional store per week, the average sales per store decreases by 1 case....

A retangular field covers 2400m^2. its lengh is 50m longer than it's width what's its with

Let f(x)=ax2+bx+c be a quadratic function with a > 0 whose graph has vertex at the point (2,5). Which of the following statements are true a. x=4 is in...

Step by step

2x^2-2x+9=0 I don't know what a discriminant is so I do not understand its purpose.

If one of the solutions to the equation: x2+3x+1=0, is a, then find 1/(a2+3a+10)

For a design competition, Maggie dropped a device from the bleachers. The equation for the device's height in feet h after t second is h=-16t^2+20. Compare the graph of this function with its...

Graph the quadratc inequality. y ≥ 2x2 - 4x - 3

How to get the formula s=1/2(αβ/α+β)t2

The International Space Agency has landed a robotic explorer on a planet. The robot launches a baseball directly upward at 147 ft/s. The equation for the path of the baseball is: h = -149t^2 +...

I don't know how to do this problem

I don't normally ask for this extent of help. but can someone walk me through the last bit of this equation. I know the steps, but I keep getting it wrong, my teachers out of town, and I don't have...

I've been working on this problem for a while now and I just can't figure out where i'm going wrong. Find the quadratic function y+ ax^2p+ bx+ c whose graph passes through...

Find the gradients of the lines with y intercept 1 that are tangents to the curve y=3x^2+5x+4

Aon object is launched at 17.2 m/s from a 25-meter tall platform. The equation for the object's height h at time t seconds after launch is: h(t) = -4.9t^2 + 17.2t +25, where h is...

Find the values of m for which the lines y=mx-2 are tangents to the curve with equation y=x^2-4x+2

Step by step problem solution

My answer booklet says the answer is 4/2 (or 1/2), but I don't understand why it's not 4/1. Thank you in advance!