![ashleyuchiha123](/avatars/35848.jpg)
ashleyuchiha123
26.07.2019 •
Mathematics
Mattie evans drove 150 miles in the same amount of time that it took a turbopropeller plane to travel 600 miles. the speed of the plane was 150 mph faster than the speed of the car. find the speed of the plane.
Solved
Show answers
More tips
- F Family and Home Do You Really Need a Playpen for Your Child?...
- F Food and Cooking Do Aphrodisiacs Really Work? Separating Fact from Fiction...
- C Computers and Internet Log-in: what is it and why do you need it?...
- S Style and Beauty Secrets of Tying a Pareo: 5 Ways...
- 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?...
- S Style and Beauty How to Make Your Lips Fuller? Ideas and Tips for Beautiful Lips...
Answers on questions: Mathematics
- M Mathematics If there are 60 people in this library, and my glock holds 15 bullets. How many people would I be able to clear up?...
- M Mathematics Look at my recent question please. its urgent...
- M Mathematics 4/5% of 192? show work please...
- M Mathematics 5.73 x what equals 5,730...
- M Mathematics What is the solution to the equation One-fourth x + 2 = negative StartFraction 5 Over 8 EndFraction x minus 5? x = negative 8 x = negative 7 x = 7 x = 8What is the solution to...
- M Mathematics Can someone help me with this? It’s unit rates with price. Question: 6 feet of ribbon for $19.20...
- M Mathematics Graph the line with the equation y = 5x - 1...
- M Mathematics 7O00 dollars in invested in a bank account at an interest rate of 10 perce per year compounded continunaly. Meanwhile, 28000 dollars invested in a bank account at an intarest...
- M Mathematics Which statements about the graphs of functions g(x) = -* *? and f(x) = x² are true? Select all that apply. U A g is wider than f. B. fand g open in the same direction. C. fand...
- M Mathematics Celea pays $50 for a 15-month subscription of a newspaper. How much does she pay per month?...
Ответ:
We start out with the formula d=rt, where d is distance, r is rate (speed) and t is time. We know the time is the same for both vehicles, so we will solve this formula for t:
d=rt
Divide both sides by r:
d/r = t
Since the time is the same, we will have a proportion in the form
d/r = d/r
The speed of the car is x, and it travels 150 miles. The speed of the plane is 150 faster than x, or x+150, and it travels 600 miles:
150/x = 600/(x+150)
Cross multiplying we have:
150(x+150) = 600*x
150x + 22500 = 600x
Subtract 150x from both sides:
150x + 22500 - 150x = 600x - 150x
22500 = 450x
Divide both sides by 450:
22500/450 = 450x/450
50 = x
The speed of the car is 50, and the speed of the plane is 50+150 = 200
Ответ:
side 1: t - 1
side 2: t + 1
side 3: 4
side 1 + side 2 > side 3 & side 2 + side 3 > side 1 & side 3 + side 1 > side 2
(t - 1) + (t + 1) > 4 (t + 1) + (4) > (t - 1) (4) + (t - 1) > (t + 1)
2t > 4 t + 5 > t - 1 t + 3 > t + 1
t > 2 5 > -1 (TRUE) 3 > 1 (TRUE)
t > 2