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
Semmy [17]
3 years ago
7

Alysha’s average speed when walking home from the market was 5 mph, and it takes her 21 minutes longer than when she drives to t

he market. If she drives along the same route, at an average speed that is 8 times her average walking speed, how many minutes does it take her to drive home from the market?
Mathematics
1 answer:
Delicious77 [7]3 years ago
3 0

9514 1404 393

Answer:

  3 minutes

Step-by-step explanation:

Let x represent Alysha's time to drive home from the market.

Speed and time are inversely proportional to each other (for the same distance), so we have ...

  (walking speed)(walking time) = (driving speed)(driving time)

  5(x +21) = (8·5)(x)

  x +21 = 8x . . . . . . . . . divide by 5

  21 = 7x . . . . . . . . subtract x

  3 = x . . . . . . .divide by 7

It takes Alysha 3 minutes to drive home from the market.

You might be interested in
!!help!!
8_murik_8 [283]

Answer:

alternate exterior and transversal P

consecutive interior angles and transversal R

corresponding and transversal S

alternate interior and transversal Q

5 0
3 years ago
Given the inequality n <-12 or n 2 -10, which of the following would NOT be a solution to this inequality?
borishaifa [10]
A is the correct answer
7 0
3 years ago
You are going to use an incline plane to lift a heavy object to the top of a shelving unit with a height of 5 ft. The base of th
Verdich [7]

Answer:

16.8 ft

Step-by-step explanation:

use pythagorean formula

16^{2}+5^{2}  =x^{2}, you are solving for the hypotenuse

x=16.8 ft

3 0
3 years ago
A bag contains 5 red marbles, 3 blue marbles, 7 yellow marbles, and 2 green marbles. Which ratio can be used to compare the red
Alisiya [41]
5red marbles :3 red marbles
6 0
4 years ago
Read 2 more answers
The mean GPA for 127 residents of the local apartment complex is 1.6. What is the best point estimate for the mean GPA for all r
madam [21]

By the Central Limit Theorem, the best point estimate for the mean GPA for all residents of the local apartment complex is 1.7.

The Central Limit Theorem established that, for a normally distributed random variable X, with mean and standard deviation, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean  and standard deviation ;

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this problem, we have that:

The sample of 112 residents has a mean GPA of 1.7.

By the Central Limit Theorem, the best point estimate for the mean GPA for all residents of the local apartment complex is 1.7.

Learn more about Mean:

brainly.com/question/4313883

#SPJ4

4 0
2 years ago
Other questions:
  • Help on math please? Thanks
    12·1 answer
  • Trina uses 1/2 cup of sugar and 3/4 cup of flour in a recipe. How many cups of sugar would she need if she uses 3 cups of flour?
    8·1 answer
  • The blades of a windmill turn on an axis that is 35 feet above the ground. The blades are 10 feet long and complete two rotation
    15·2 answers
  • Drive 1,800 mi in 30 h
    8·1 answer
  • In a certain​ chemical, the ratio of zinc to copper is 3 to 17. A jar of the chemical contains 799 grams of copper. How many gra
    6·1 answer
  • 5(x+2)=6x+3x-14 please solve
    7·1 answer
  • Please help me answer this look at the attachment
    12·2 answers
  • Given a | | b, m∠ 1 = 56° , and m∠2 = 42° , find the measure of the other angles.
    13·1 answer
  • Given : AB = BC and BC = CD, AB = 3x - 1 and CD = 2x + 3 Prove: BC = 11 plz help me
    14·1 answer
  • What are the four quadrants for graphing ??????? <br><br><br> Plsssssssssssssss help me
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!