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
Alex
2 years ago
12

it takes max 1.8 hours to walk home from work at a rate of 3.5km/h. how long would it take max to cover the same distance walkin

g at 4.2 km/h
Mathematics
1 answer:
NikAS [45]2 years ago
3 0

Time taken by Max to cover the same distance walking at 4.2 km/h is 1.5 hours

<h3><u>Solution:</u></h3>

Given it takes Max 1.8 hours to walk home from work at a rate of 3.5km/h

We have to find time taken by Max to cover the same distance walking at 4.2 km/h

<em><u>The relation between speed and time is given as:</u></em>

speed = \frac{distance}{time}

<em><u>CASE 1:</u></em>

It takes Max 1.8 hours to walk home from work at a rate of 3.5km/h

Let us first find the distance covered

Time taken = 1.8 hours and speed = 3.5 km/hr

3.5 = \frac{distance}{1.8}\\\\distance = 3.5 \times 1.8 = 6.3

Hence distance covered is 6.3 km

<em><u>Now we have to find the time taken to cover same 6.3 km walking at 4.2 km\hr</u></em>

4.2 = \frac{6.3}{time taken}\\\\time taken = \frac{6.3}{4.2} = 1.5

So time taken by Max to cover the same distance walking at 4.2 km/h is 1.5 hours

You might be interested in
Hi, help will be appreciated
aalyn [17]

Answer:

KM=9

JK= 12.69

Angle JKM=45 degrees

ML=18.97

MKL=60 degrees

Angle L=30 degrees

Step-by-step explanation:

Triangle JKM is a 45, 45, 90 degree triangle so that means both side lengths are equal and the hypotenuse is square root of 2 times a side length. This means, KM will be equal to 9 and JK will be equal to 9 times square root of 2. For triangle KML, you know that the triangle is a 30,60,90 degree triangle. This means the hypotenuse is a^2+b^2=c^2 where c is the hypotenuse.  Since you know that a is 9 and c is 21, plug them into the equation to get 81+b^2=441. Subtract 81 from both sides to isolate b^2 to get 360. b^2 = 360. Then find the square root of 360 which is about 18.97. Therefore, b or ML is equal to 18.97. Also, because we know that MKL is a 30, 60, 90 triangle, we know that angle MKL is equal to 60 degrees. Because we know the angles of MKL(60) and KML (90), we do 180-90-60 to find angle L. Simplify 180-90-60 to 30 and that means that angle L is equal to 30 degrees.  Since we know that JKM is a 45, 45, 90 degree triangle, we know that JKM is equal to 45 degrees. Therefore, KM is equal to 9, JK is equal to 9 times square root of 2 or 9 times 1.41 which is 12.69. Angle JKM is 45 degrees, ML is 18.97, angle MKL is 60 degrees, and angle L is 30 degrees.

If this answer has helped you, please mark this answer as the brainliest

4 0
2 years ago
25 POINTS!! Help will give the brainliest
polet [3.4K]

Answer:

value of a in terms of b and c is: \mathbf{a=bc}

Option D is correct.

Step-by-step explanation:

We are given:

a=b^2c^2d \:and\: d=\frac{1}{a}

We need to find a in terms of b and c

We have: a=b^2c^2d

Put value of d d=\frac{1}{a}

a=b^2c^2(\frac{1}{a})\\a^2=b^2c^2\\Taking \:squareroot\:on\:both\:sides\\\sqrt{a^2}=\sqrt{b^2c^2}\\a=bc

So, value of a in terms of b and c is: \mathbf{a=bc}

Option D is correct.

6 0
2 years ago
What is the value of n
SVETLANKA909090 [29]
Well, this answer is easy because.... n is an obtuse angle (more than 90 degrees) and there is only 1 answer that is more than 90 degrees.

So, the correct answer is D. 95°
6 0
3 years ago
Read 2 more answers
Sammy bought a pair of shoes priced at $47.99. The sales tax was $2.88.Sammy gave the clerk $60.00. How much money should he get
artcher [175]
$47.99+$2.88=$50.87 (total cost)

$60.00-$50.87=$9.13

he should get back $9.13

5 0
3 years ago
Read 2 more answers
Answer ASAP for brainly
prohojiy [21]

Answer: 25

Step-by-step explanation: -5 x 25 + 13 = -112

5 0
2 years ago
Read 2 more answers
Other questions:
  • Line l passes through the points (1, 3) and (2, 5), and
    5·1 answer
  • A triangle includes one angle that 72º. Which pair could be the measures of the other two angles of the triangle?
    8·2 answers
  • Construct the described data set. The entries in the data set cannot all be the same. The median and the mode are the same. What
    14·2 answers
  • What is the slope of the line that contains the points (-1, 2) and (3, 3)?
    8·1 answer
  • Find the area of a circle that has a diameter of 18 inches. 1,017.36 in.2 254.34 in.2 113.04 in.2 56.52 in.2
    15·1 answer
  • Please help I need it ASAP or I can't graduate!
    5·1 answer
  • What is the value of y for the line when x=-4
    12·1 answer
  • A circle has a radius of 4ft. What is the area of the sector formed by a central angle
    10·1 answer
  • Helppppp plzzzzzz im almost of time i will give brainiest
    7·1 answer
  • A shipping company must design a closed rectangular shipping crate with a square base. The volume is 2880ft3. The material for t
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!