abby20164
24.10.2020 •
Mathematics
Which expression is equivalent to this ? ???
Solved
Show answers
More tips
- L Leisure and Entertainment How to Properly Wind Fishing Line onto a Reel?...
- L Leisure and Entertainment How to Make a Paper Boat in Simple Steps...
- T Travel and tourism Maldives Adventures: What is the Best Season to Visit the Luxurious Beaches?...
- H Health and Medicine Kinesiology: What is it and How Does it Work?...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
- A Art and Culture When Will Eurovision 2011 Take Place?...
- S Style and Beauty How to Choose the Perfect Hair Straightener?...
- F Family and Home Why Having Pets at Home is Good for Your Health...
Answers on questions: Mathematics
- M Mathematics List 4 factors a lending institution might use when determining your eligibility for a home loan...
- M Mathematics Una persona quiere guardar 1000 fotos de igual peso más un video de 250 MB; pero su disco externo tiene disponibles 2000 MB capacidad insuficiente para realizar...
- M Mathematics During track practice, carter walks for 200 m each time after he jogs for 800 m. if he jogged for 7,200 m during today s practice, how many meters did he walk?...
- M Mathematics What is the solution to the equation ? p = –6 p = p = –4 p =...
- M Mathematics The trough in the figure is to be made to the dimensions shown. Only the angle can be varied. What value of will maximize the trough s volume?...
Ответ:
Ответ:
See below
Step-by-step explanation:
4) You made an error in step 3
Step 1: -x³ + 22x² - 121x = 0
Step 2: -x(x² - 22x + 121) = 0
Step 3: -x(x - 11²) = 0 Error!
-x(x - 11)² = 0 Correction
Step 4: -x = 0 (x - 11)² = 0
Step 5: x = 0 x = 11
15) Your work is correct
n = 8, n = -9 BOTH answers are correct
n = 8 Error!
n = 8, n = -9 Correction
18) The formula is: h(t) =at² + vt + h(0)
a = -4.9 acceleration is negative because gravity pushes downv = 24.5 velocity is positive because it states it is "upward"h(0) = 117.6 h(0) is initial heighth(t) = -4.9t² + 24.5t + 117.6 option 3
19) Now that you have the correct equation, you can use the quadratic formula to solve for t
t = -3, t = 8
Since time cannot be negative, t = -3 is not valid
t = 8 option 1
20) It is given that h(t) = 49
Equation: 49 = -4.9t² + 24.5t + 117.6
0 = -4.9t² + 24.5t + 68.6
Use the quadratic equation to solve: t = -2, t = 7
Since time cannot be negative, t = -2 is not valid
t =7