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
7nadin3 [17]
2 years ago
7

a jogger ran 4 miles, decreased her speed by 1 mile per hour, and then ran another 5 miles. If her total jogging time was 2 1/20

hours, find her speed for each part of her run.
Mathematics
1 answer:
LekaFEV [45]2 years ago
5 0
Let the speed of the joker initially be x mi/hr
after reduction, the new speed will be: (x-1) mi/hr
but
time=(distance)/(speed)
hence :
Total time taken will be:
4/x+5/(x+1)=41/20
solving for x we get:
x=21.585 mi/hr
thus the initial speed was 21.585 mi/hr after reduction the new speed was 20.585 mi/hr
You might be interested in
A microscope shows you an image of an object that is 160 times the object's actual size. So the scale factor of the enlargement
Vedmedyk [2.9K]

Answer: A

Step-by-step explanation:image of insect under microscope = scale factor × insect size = 160 × 2 = 320 millimeters

7 0
2 years ago
- 4j - 1 - 4j+6<br><br> Write that expression in the simplest form
Anika [276]

Answer:

-8j+5

Step-by-step explanation:

the answer is -8j+5

4 0
2 years ago
Find the volume <br> 6ft<br> 4ft<br> 3ft<br> (i know it’s not 72)
vlada-n [284]

Answer:

\fbox{Volume \:  of \:  pyramid \:  = 24 ft³}

Step-by-step explanation:

Given:

shape of object = Pyramidal

length of base l= 4ft

width of base w = 3ft

height of pyramid h = 6 ft

To find:

volume of pyramid = ?

Solution:

Volume  \: of \:  pyramid=  \frac{l \times w \times h}{3} \\ Volume \:  of \:  pyramid=  \frac{6 \times 4 \times 3}{3}  \\ Volume \:  of \:  pyramid=  \frac{24 \times  \not3}{ \not3}  \\ Volume \:  of \:  pyramid= 24 \:  {ft}^{3}

\fbox{Volume \:  of \:  pyramid \:  = 24 ft³}

<h3><em><u>Thanks for joining brainly community!</u></em></h3>
5 0
2 years ago
Figure A has a radius of 2 inches. It is dilated by a scale factor of 4 to form figure B. What is the radius of figure B?
snow_lady [41]
Given that figure A with radius of 2 inches is dilated to form figure B, the radius of B will be given by:
Radius B=(radius A)×(scale factor)
but
scale factor=4
thus
Radius of B will be:
2×4
=8 inches
7 0
3 years ago
a rectangle has a width of 6 units and a length of 2x + 8 units of the area is 108 units squared what is the value of x
zimovet [89]
4 is the valew of x
i think
4 0
3 years ago
Read 2 more answers
Other questions:
  • Find the properties of the parabola with the equation (x + 5) 2 = 4(y - 1)
    6·1 answer
  • IF AM = 10, then TC =?
    9·2 answers
  • Jakes elevation decreases 350 meteors as he rides his bike to the bottom of the hill he completes the ride in 5 equal stages how
    10·1 answer
  • Courtney has 27 chocolate chip cookies and 36 oatmeal raisin cookies. She needs to arrange them on trays. She doesn't want to co
    5·1 answer
  • Jacob and Ayden work at a dry cleaners ironing shirts. Jacob can iron 25 shirts per hour, Ayden can iron 35 shirts per hour. Ayd
    6·1 answer
  • Share 747 in the ratio 2:7 between Tom and Ben
    7·2 answers
  • What is the colon form? :)​
    7·1 answer
  • Solve the proportion below ? x/18 = 7/6
    14·1 answer
  • If x is an odd number, which of the following is also odd? * X + 1, X + 2, 2x + 2 or 3x + 1​
    13·1 answer
  • James designed a game of chance which involves identical balls numbered from 1 to 50. He selected 5 balls at random and found th
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!