1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
inn [45]
3 years ago
10

Two trains leave stations 442 miles apart at the same time and travel toward each other. one train travels at 90 miles per hour

while the other travels at 80 miles per hour. how long will it take for the two trains to meet? do not do any rounding.
Mathematics
1 answer:
pickupchik [31]3 years ago
6 0
Let x and (442-x) represent the distance of the trains traveled. X/90 mph=442-x/80 mph
Cross multiply 80×x =90(442-x)
80x=90×442-90x
170x=90×442
X= 90×442/170
X=234, distance traveled by train going 90mph
234mi/90mph = 2.6 hr, time it takes for the two trains tok meet.
Checking your answer:
90×2.6+80×2.6=234mi+208mi = 442mi
You might be interested in
Jasmine bought a pennant (triangle) of the favorite baseball team. If the base is 16 inches and height is 24 inches, how much ar
KATRIN_1 [288]
D. 192in^2

This would be a simple area problem with a triangle. REMEMBER THIS EQUATION: a=bh*1/2 (b for base and h for height, these are multiplied together then that answer is halved out.)

So we just need to plug in our values into the equation, so the equation would look like a= (16)*(24)*1/2. 16 times 24 would then give you 384, you could either divide by 2 or multiply by 0.5 to get the next answer, as long as your HALVING the answer.

So we have our bh value so now we can multiply by 1/2 which will give us 384*1/2 which leaves us with 192.

I have also attached a photo of doing a longer(ish) way than this, that also proves that this equation works. Either one will provide you an answer.

6 0
3 years ago
How to do zero-product property
SVEN [57.7K]
An number multiplied by zero is zero. This is because you are essentially saying that 1,000 0 times is zero.
6 0
4 years ago
Suppose f and g are continuous functions such that g(2) = 6 and lim x → 2 [3f(x) + f(x)g(x)] = 36. find f(2).
True [87]

Answer: f(2) = 4

Step-by-step explanation:

F(x) and g(x) are said to be continuous functions

Lim x=2 [3f(x) + f(x)g(x)] = 36

g(x) = 2

Limit x=2

[3f(2) + f(2)g(2)] = 36

[3f(2) + f(2) . 6] = 36

[3f(2) + 6f(2)] = 36

9f(2) = 36

Divide both sides by 9

f(2) = 36/9

f(2) = 4

7 0
3 years ago
One out of 3 gym members say they spent 5 hours per week at the gym. If there are 150 people working out at the gym, how many wi
lana [24]

Answer: 50

Step-by-step explanation:

From the question, we are informed that 1/3 of gym members say they spent 5 hours per week at the gym.

Assuming there are 150 people working out at the gym, the number of people that'll most likely spend 5 hours at the gym this week will be calculated by multiplying 1/3 by 150. This will be:

= 1/3 × 150

= 50 people

8 0
3 years ago
A painter has finished painting 45% of a really long fence. If she has painted 90 feet so far, how long is the entire fence?
frozen [14]

Answer:

90/45%=200

the entire fence is 200

6 0
3 years ago
Other questions:
  • Kristen takes 2 pages of notes during each hour of class. Write an equation that shows the relationship between the time in clas
    15·1 answer
  • What type of triangle is this?​
    6·2 answers
  • Solve 5x(68-75/98)+y=2
    9·1 answer
  • The National Vaccine Information Center estimates that 90% of Americans have had chickenpox by the time they reach adulthood.32
    14·1 answer
  • Form 914 M.
    13·1 answer
  • 864 divided 6 standard algorithm
    6·1 answer
  • 4.30 makeup; 40% discount find the sale to the nearest cent
    5·1 answer
  • Need answer ASAP pls it’s important
    10·1 answer
  • How many people were in the sample?<br><br><br><br> 45<br> 90<br> 5<br> 10
    7·2 answers
  • help please pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!