PLEASE ANSWER (all) WILL MARK BRAINLIEST!!!!
1) If a plane is flying at 40 mph while another plane is flying at 100 mph and they are 200 miles apart, how long will it take them to collide?

2) Ivan and Kate live 40 miles apart. If Ivan started pedaling towards Kate at 8:00 a.m. at a steady 12 mph while Kate left to meet Ivan at 9:30 a.m. but rode at 16 mph, at what time will they meet?

3) A truck with a heavy load drove from Boston to New York at 40 mph. After unloading, it returned from New York to Boston at a speed of 60 mph. What was its average speed for the whole trip?

Question

30-04-2018
Mathematics

contestada

PLEASE ANSWER (all) WILL MARK BRAINLIEST!!!!
1) If a plane is flying at 40 mph while another plane is flying at 100 mph and they are 200 miles apart, how long will it take them to collide?

2) Ivan and Kate live 40 miles apart. If Ivan started pedaling towards Kate at 8:00 a.m. at a steady 12 mph while Kate left to meet Ivan at 9:30 a.m. but rode at 16 mph, at what time will they meet?

3) A truck with a heavy load drove from Boston to New York at 40 mph. After unloading, it returned from New York to Boston at a speed of 60 mph. What was its average speed for the whole trip?

Respuesta :

Otras preguntas

Integrate Information From Diverse Sources Why might isolationists oppose some or all ofWilson's Fourteen Points?Type your answer here.

What should you do right before you put the biscuit inthe oven?Flatten all the biscuits completely.Nothing - they are all ready to go in the oven.Lightly push d

The Haber process produces ammonia as shown in the equilibrium equation below. N2(g) + 3H2(g) 2NH3(g) + energy The Haber process is occurring in a reaction c

Identify the points or practices proposed by Deming for a successful workplace. (Check all that apply.) 1. Improve job training for employees. 2. Inspect incomi

Full Staff HIPAA Compliance Training #4 Quiz10%CompletedWhat is the goal of the Whistleblower Protection Act?It preventspractices fromretaliation towardsemploye

Would sample counting or capture mark-and-release at a specified time and place be the best method for measuring each of these populations: birds,whales, bluebo

CalculationsCalculate the number of moles of sodium hydroxide (NaOH) in 2 grams.

m 13:27 Jueves 30 de mayojercicios MRU.pdf35 Un tren parte de una ciudad A en dirección a otra Bcon una velocidad constante de 90 km/h. Una hora mástarde otro t

Select the correct text in the passage.Which phrases in this excerpt from James Joyce's "A Portrait of the Artist as a Young Man" portray the story's setting?Th

Works that analyze, assess, or interpret a historical event, anera, or a phenomenon using primary sources. A. Primary B. SecondaryC. Tertiary D. None of the abo

CastleRook CastleRook · Answer 1 · 2018-05-09T11:03:47+02:00

1) If a plane is flying at 40 mph while another plane is flying at 100 mph and they are 200 miles apart, how long will it take them to collide?
time=distance/speed
distance between the planes=200 miles
relative speed=(100+40)=140 mph
thus time taken for them to collide will be:
200/140
=1.43 hours

2] Ivan and Kate live 40 miles apart. If Ivan started pedaling towards Kate at 8:00 a.m. at a steady 12 mph while Kate left to meet Ivan at 9:30 a.m. but rode at 16 mph, at what time will they meet?
Time=(distance)/(speed)
relative speed=(40+12)=52 mph
distance=40 miles
thus
time=40/52=0.769 h=0.8 hours=48 min
time they will meet will be:
9:30+48=10:18 a.m

3) A truck with a heavy load drove from Boston to New York at 40 mph. After unloading, it returned from New York to Boston at a speed of 60 mph. What was its average speed for the whole trip?

average speed is given by:
(40+60)/2
=100/2
=50 mph