2sally2
18.03.2021 •
Mathematics
Please help, will mark brainliest.
Solved
Show answers
More tips
- C Computers and Internet How to Properly Repartition a Hard Drive?...
- A Auto and Moto What Is the Cost of Customs Clearance for a Car in Russia?...
- L Leisure and Entertainment Should You Buy a Ceramic Knife?...
- C Computers and Internet How to easily and quickly disable Firebug in Gmail and Google Docs...
- G Goods and services How to sew a ribbon: Tips for beginners...
- F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
- C Computers and Internet Which Phone is Best for Internet Surfing?...
- F Food and Cooking Everything You Need to Know About Pasta...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
Answers on questions: Mathematics
- M Mathematics Chetan and his 5 siblings buy a present for their mother on mother s day. as the eldest brother, he pays 0.2 of the cost of the present. the rest of the siblings share the...
- M Mathematics Arectangle has an area of 35 square centimeters and a length of 10 centimeters what is the width of the rectangle a) 3 centimeters b) 3.5 centimeters c) 12.5 centimeters...
- M Mathematics For geometry if u have a triangle do you add up all of the sides and divide?...
- M Mathematics Which polynomial is in standard form ? a)1+2x-8x^2+6x^3 b)2x^2+6x^3-9x+12 c)6x^3+5x-3x^2+2 d)2x^3+4x^2-7x+5...
- M Mathematics What is the answer in simplest term?...
- M Mathematics What is the slope of a line parallel to the line whose equation is 2x-3y=6 1. 1/5 2. 3/3 3.4/3 4.2/3...
- M Mathematics Write an expression for the sequence of operations described below. k increased by the quotient of 10 and 7 do not simplify any part of the expression....
- M Mathematics To determine a percent equal to a fraction, why should you write the fraction with a denominator of 100...
- M Mathematics Alex and jim have equal amounts of money. each day, alex spends $5 and jim spends $3. when alex has $8 left, jim has 4 times as much money left as alex. how much money does...
- M Mathematics You are playing a game of scrabble and have 5 a tiles 3e tiles 1 z tile 2 m tiles 3 l tiles, and 1 y tile to choose from, what is the probability that you choose e or y...
Ответ:
9514 1404 393
a) x = {-1, 3, 4}
b) (0.472, 13.128)
c) (3.528, -1.128)
d) x < 0.472 U x > 3.528
e) 0.472 < x < 3.528
Step-by-step explanation:
This is a cubic (odd degree) function with a positive leading coefficient, so it will be increasing until the first turning point, and after the last turning point. It will be decreasing between the turning points.
a) A graph shows the zeros to be x = -1, x = 3, x = 4.
b) A graph shows the local maximum to be approximately (0.472, 13.128). The x-coordinate of this point is exactly 2-√(7/3).
c) The local minimum is about (3.528, -1.128). Its x-coordinate is exactly 2+√(7/3).
d) As stated above, the increasing intervals are (-∞, 0.428) ∪ (3.528, ∞).
e) The decreasing interval is (0.428, 3.528).
_____
Additional comments
The sum of odd-degree term coefficients is the same as the sum of coefficients of even-degree terms, so you know one of the roots is -1. Factoring that out gives the quadratic x^2 -7x +12 = (x -3)(x -4), so the other two roots are 3 and 4.
The derivative is 3x^2 -12x +5 = 3(x -2)^2 -7, so its roots (turning points of f(x)) are 2±√(7/3).
I find a graphing calculator can show me the roots and turning points easily.
Ответ:
35 meters per minute
Step-by-step explanation:
140÷4=35
35 meters per minute