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
Blababa [14]
3 years ago
6

The time t required to drive a certain distance varies inversely with the speed r. If it takes 12 hours to drive the distance at

60 miles per hour, how long will it take to drive the same distance at 85 miles per hour?
Mathematics
1 answer:
aleksklad [387]3 years ago
4 0

Answer:

8.47 Hours

Step-by-step explanation:

The total distance covered in 12 hours with a speed of 60 mph

Distance = 12 x 60 = 720 miles

Now we are required to find the time taken if the same distance is travelled with a speed of 85 mph

Time = 8.47 hours

You might be interested in
How to I solve problem 1?
Verdich [7]
#1

The uniforms are numbered 0, 1, 2, ..., 99. That's 100 numbers. Half of them are odd and half of them are even. So the probability that any one of the uniforms is odd is 1/2 just like the probability that any one uniform is even is 1/2.

(a) The numbers on the uniforms are independent of one another. That is, the number of her cross-country uniform does not in any way determine the number on her basketball uniform and vice versa. This means that we can find the probability that each is odd and multiply these together using what is called the counting principle. The probability that all are odd is:
(1/2)(1/2)(1/2)=1/8

(b) This is done the same way we did part (a). Since the probability of any one uniform being odd is the same as it being even (1/2), the answer here is the same: (1/2)(1/2)(1/2)=1/8

(c) This problem differs from that in (a) and (b). There is only one way for all three uniforms to be odd numbers: (odd, odd, odd) or all even (even, even, even). However, there are multiple ways for the uniforms to be two odd and one even. If the uniforms are listed in order: cross-country, basketball, softball we can get exactly one even in any of three ways:
even, odd, odd
odd, even, odd
odd, odd, even
The probability for any one of these possibilities is (1/2)(1/2)(1/2)=1/8 but since there are three way the probability that we get even exactly once is equal to (3)(1/8) = 3/8
7 0
3 years ago
If ray sv is an angle bisector of angle rst. if measure of angle rsv is equal to (3x + 5)
Marina86 [1]
This question is unclear, I don't understand and it doesn't ask the question.
8 0
3 years ago
3) Jaidee invests $1,966 in a savings account with a fixed annual interest rate of 2.45% compounded continuously. What will the
Mama L [17]

Answer:

87

Step-by-step explanation:

6 0
3 years ago
translate this phase into an algebraic expression. One more than the product of 13 and Mai's savings. Use the Variable my to rep
Ivenika [448]
It would be (13 x Y) + 1
5 0
3 years ago
Can anyone help me with these questions plz
KonstantinChe [14]

Answers:

  • 7:    20 miles
  • 8:    28 miles

  • 9:   1 error
  • 10:   Their speed is 50
  • 11:   365 words in 5 mins

Step-by-step explanation:

  • #7 and #8

Our equation is: f=2.25+0.20(m-1)   With f meaning "fare" (price) and m meaning "miles".

Question 7 - Juan's fare for his ride costs $6.05. We must solve for m.

Step 1. Substitute - <em>Substitute the fare for f in the equation.</em>

6.05=2.25+0.20(m-1)

Step 2. Simplify/Solve - Solve for m.

6.05=2.25+0.20(m-1)

<em>- Distribute</em>

6.05=2.25+0.2m-0.2

<em>- Subtract 0.2 from 2.25</em>

6.05=2.05+0.2m

<em>- Subtract -2.05 from 6.05</em>

4=0.2m

<em>- Divide both sides by 0.2</em>

20=m

<u>And you have your answer of 20 miles.</u>

Question 8 - Same equation, different fare.

Step 1. Substitute

7.65=2.25+0.20(m-1)

Step 2. Solve

7.65=2.25+0.20(m-1)\\7.65=2.25+0.20m-0.20\\7.65=2.05+0.20m\\5.6=0.20m\\28=m

And like so, we have m = 28

  • Questions 9 - 11

<em>The equation given is S=\frac{1}{5} (w-10e). S =  typing speed, w = words per 5 mins, and e= errors.</em>

Question 9 -

<em>We are given this information: S = 55, W  = 285. We are solving for e</em>.

Substitute -

55=\frac{1}{5} (285 -10e)

Solve -

55=\frac{1}{5} (285 -10e)\\55=\frac{1}{5} (285 -10e)\\55= 57-2e\\-2=-2e\\1=e

So they would make 1 error.

Question 10 -

<em>Information given: 300 = w, 5=e. We are solving for S</em>

Substitute -

S= \frac{1}{5} (300-10(5))

Solve -

S= \frac{1}{5} (300-10(5))\\S= \frac{1}{5} (300-50)\\S= \frac{1}{5} (300-50)\\S= \frac{1}{5} (250)\\S= 50

Their speed is 50.

Question 11 -

<em>Information given: S = 65, e = 4. We are solving for w.</em>

Substitute -

65=\frac{1}{5} (w-10(4))

Solve -

65=\frac{1}{5} (w-10(4))\\65=\frac{1}{5} (w-40)\\65=\frac{1}{5}w-8\\73=\frac{1}{5}w\\365=w

So w = 365.

  • Hoped this helped!~

7 0
3 years ago
Other questions:
  • Expanded form 403,892
    14·2 answers
  • Which method of data collection would you use to collect data for a demographic study at a small private company?
    13·1 answer
  • A car leaves Albany, NY, and travels west toward Buffalo, NY. The equation D=280-59t can be used to represent the distance,D, fr
    9·1 answer
  • There are 12 inches for every 1 foot. How many inches are equivalent to 4 feet?
    5·1 answer
  • Convert 12 feet to centimeters
    9·1 answer
  • What is the length X?
    14·2 answers
  • If the DIAMETER of a circle is 18 inches, what is the length of the radius? *
    6·2 answers
  • If AB = 19, BC = 16, and m
    12·1 answer
  • What is the solution to the equation? √x+3=12
    7·2 answers
  • 6.5 x 1/9 please help
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!