A community for students.
Here's the question you clicked on:
 0 viewing
gaby236
 2 years ago
The average speed of one airplane is 200 mph faster than that of an automobile. If the automobile starts at 3 a.m. and the airplane starts from the same place at 11 a.m., they will have traveled the same number of miles by 1:00 p.m. Find the rate of the automobile.
gaby236
 2 years ago
The average speed of one airplane is 200 mph faster than that of an automobile. If the automobile starts at 3 a.m. and the airplane starts from the same place at 11 a.m., they will have traveled the same number of miles by 1:00 p.m. Find the rate of the automobile.

This Question is Closed

sauravshakya
 2 years ago
Best ResponseYou've already chosen the best response.0(x+200) * 2 = x*10

gaby236
 2 years ago
Best ResponseYou've already chosen the best response.1Time between 11 am and 1 pm is 2 h. During this time the plane has travelled the same distance as the car has travelled in 10 h. If v is the velocity of the car The plane travels 200 * 2 + v*2 The car travels v*10. they travel the same distance 400 + 2v = 10v 400 = 10v  2v 400 = 8v v = 50 mph and speed of plane is a very slow 250 mph.

gaby236
 2 years ago
Best ResponseYou've already chosen the best response.1@sauravshakya is correct

gaby236
 2 years ago
Best ResponseYou've already chosen the best response.1A druggist has two mixtures of a certain chemical and water, one containing 10% of the chemical and the other containing 40% of the chemical. How much of each mixture should he use to make 10 ounces that contain 25% of the chemical? If x is the amount of 10% mixture used, then which expression represents the ounces of chemical contained in it?

gaby236
 2 years ago
Best ResponseYou've already chosen the best response.1x ounces of 10% soln mixed with (10 – x) ounces of 40% soln. as total final volume is 10 ounces amount of chemical in x ounces = 0.1x amount of chemical in (10 – x) ounces = 0.4(10 – x) = 4 – 0.4x amount of chemical in 10 ounces = 10 × 0.25 = 2.5 chemical balance 0.1x + 4 – 0.4x = 2.5 0.3x = 1.5 x = 5 ounces of 10% mixed with (10 – 5) = 5 ounces of 40% to give 10 ounces of 25% daughter takes x hr in 1 hr 1/x work done

gaby236
 2 years ago
Best ResponseYou've already chosen the best response.1i need help @sauravshakya

gaby236
 2 years ago
Best ResponseYou've already chosen the best response.1a;0.1x b;x c;10x i think my answer is a or c
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.