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
stealth61 [152]
3 years ago
14

Two cars at the same point on I-75. One heads north going 75mph and one heads south going 60mph. How long will it take for the c

ars to be at 420 miles apart?
Mathematics
1 answer:
Mice21 [21]3 years ago
5 0

It will take 3 hours 6 minutes 40 seconds for the cars to be 420 miles apart.

Step-by-step explanation:

Step 1; The cars are traveling in the opposite direction at different speeds. One is going north at a speed of 75 mph while the other is going 60 mph. So for every hour, the cars are traveling they increase the distance between in between themselves by 75 miles + 60 miles = 135 miles.

Step 2; Assume that in x hours the distance between them is 420 miles. To calculate x we divide the distance to be traveled by the distance being traveled every hour.

x = distance to be covered / distance being traveled every hour

= 420 / 135 = 3.11 hours

We multiply the 0.11 hours with 60 to convert it into minutes. 0.11 × 60 = 6.66 minutes and if we do the same for seconds, 0.66 minutes × 60 = 40 seconds.

You might be interested in
What is the right order of coefficients in the following equation?
Neporo4naja [7]

Answer:

Last option?

Step-by-step explanation:

ax+by=c

4x+6y=60

a=4

b=6

c=60

6 0
3 years ago
Read 2 more answers
What’s the answer to n
Ksju [112]
Hello there!

I see you got some work done already, but I guess you just wanted to double check! :)

3n + 8 = 20

3n = 20 -8 (Subtract 8 on both sides).

3n = 12 (Combine like terms).

n = 4 ( divide both sides by 3)

There you have your answer! :D

Hope this helped!

---------------------

DISCLAIMER: I am not a professional tutor or have any professional background in your subject. Please do not copy my work down, as that will only make things harder for you in the long run. Take the time to really understand this, and it'll make future problems easier. I am human, and may make mistakes, despite my best efforts. Again, I possess no professional background in your subject, so anything you do with my help will be your responsibility. Thank you for reading this, and have a wonderful day/night!
7 0
3 years ago
A retail chain lines its parking lots depending on the types of vehicles driven by local shoppers. Large trucks and SUVs require
Free_Kalibri [48]

Data is collected on the types of vehicles

this is cross sectional data

Time is not relavant for this data and hence cannot be time series data.

b)

from the given information, the variable is type of vehicle which is categorical data

c)

this data is only about the more frequent vehicles the chain cannot ignore the vehicles which are not parked

7 0
3 years ago
I'm confused- can someone help?-
True [87]
16b +5c -10 -8c +2b
18b - 3c -10
6 0
3 years ago
Read 2 more answers
How do I solve this?: The times of all 15 year olds who run a certain race are approximately normally distributed with a given m
Effectus [21]
We need to 'standardise' the value of X = 14.4 by first calculating the z-score then look up on the z-table for the p-value (which is the probability)

The formula for z-score:
z = (X-μ) ÷ σ

Where
X = 14.4
μ = the average mean = 18
σ = the standard deviation = 1.2

Substitute these value into the formula

z-score = (14.4 - 18) ÷ 1..2 = -3

We are looking to find P(Z < -3)
The table attached conveniently gives us the value of P(Z < -3)  but if you only have the table that read p-value to the left of positive z, then the trick is to do:
1 - P(Z<3)

From the table
P(Z < -3) = 0.0013

The probability of the runners have times less than 14.4 secs is 0.0013 = 0.13%


5 0
3 years ago
Read 2 more answers
Other questions:
  • a share of wonder stock rose 4 points on Monday. on Tuesday it fell 6 points. what was it's total loss or gain​
    11·1 answer
  • Of the students at grant middle school,63% are girls. The school newspaper is randomly selecting a student to be interviewed. De
    6·1 answer
  • Show that 8^3 − 1 is divisible by 7.
    14·1 answer
  • Suppose that a worker in Caninia can produce either 2 blankets or 8 meals per day, and a worker in Felinia can produce either 5
    14·1 answer
  • Joey is riding his bike through the desert. Joey recorded his distance traveled at five different points during his bike ride. T
    10·1 answer
  • If x is Equal to 7, what is 7 divided by 3 and round it up
    12·1 answer
  • If the ratio of purple marbles to orange marbles is 3 to 8, how many orange marbles will I have if I have 48 purple marbles?
    10·2 answers
  • Someone please help me URGENT!!
    7·1 answer
  • Nicholas bought 5 pens for $3. At this rate, how much will he spend on 10 pens?
    14·2 answers
  • Mary is making pillows for her Life Skill class. She bought 2 ½ yards of fabric. Her total cost was $15. What was the cost per y
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!