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
9.9 ft<br> 7.2 ft<br> What is the length ? I’m
GarryVolchara [31]

Answer:

minus

the question is not complete

3 0
2 years ago
Is cos theta=cos(-theta)
saul85 [17]

Answer:

TRUE

Step-by-step explanation:

An even function is a function that satisfies that f(x) = f(-x). Also, we know that cosine is an even function, therefore cos(theta) equals cos(-theta).

4 0
2 years ago
1-3x=8x+3 solve the equation
LenaWriter [7]

First, subtract both sides by 8x and you would get:

1 - 11x = 3

Then, subtract both sides by 1 and you will get:

-11x = 2

Divide both sides by -11:

x = -2/11

8 0
3 years ago
The identity (x2 + y2) = (x2 - y2) + (2xy)? can be used to generate Pythagorean triples. What
Effectus [21]

Answer: 5329, 3025, 2304

Step-by-step explanation:

I just did the test

7 0
3 years ago
Alex wrote checks on Tuesday for $30 and $40. He also made a deposit in his
Ksivusya [100]

Alex finally had $(x+110) amount of money in his account i.e. He had $100 more then before!

<u>Step-by-step explanation:</u>

Alex wrote checks on Tuesday for $30 and $40. He also made a deposit in his checking account of $180. Let's solve it step by step :

<u>Alex wrote checks on Tuesday for $30 and $40:</u>

Let's suppose Alex initially had x amount of money out of which $30 & $40 is deducted! so left amount of money is $(x-70) .

<u>He also made a deposit in his checking account of $180:</u>

Out of left money $(x-70) , Alex deposited $180 in account so new money = $(x-70) + $180 = $(x+110)

Therefore, Alex finally had $(x+110) amount of money in his account i.e. He had $100 more then before!

6 0
3 years ago
Other questions:
  • Select the correct answer<br> Which expression represents the series 1 + 5 + 25 + 125 + 6252
    15·1 answer
  • What is the factored dorm of 1256x to the sixth power minus 8​
    8·1 answer
  • Match with the sum of the monomial and binomial
    7·1 answer
  • Follow the steps to solve the equation square root 2x-7 - square root 3x - 12 = 0.
    9·1 answer
  • If you purchase a DVD player that cost $625 how much sales tax will you pay to the nearest cent if the rate is 7.375%
    13·1 answer
  • Where are they getting the $8.18 and $6.32 numbers for each calculation?
    11·1 answer
  • Find the area of circle B in terms of pie
    11·2 answers
  • PPPPPPPPPPPPPPPPPLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLZZZZZZZZZZZZZZZZZZZZZ Help its due by end of day i relay need a good grade
    9·2 answers
  • Shannon states that
    11·1 answer
  • Ali is 12 years and his sister is 8 years what is the ratio of the sister's age to ali's?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!