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
Ierofanga [76]
3 years ago
9

Donya ran a 3k race at a constant speed in 21 minutes 30 seconds. At this speed, how long does it take her to run 1k?

Mathematics
2 answers:
Illusion [34]3 years ago
7 0

Answer:

7 minutes 10 seconds.

Step-by-step explanation:

Donya ran a 3 k race at a constant speed = 21 minutes 30 seconds

1 minutes = 60 seconds

21 minutes 30 seconds = 21 + (30/60) = 21.5 minutes

At this speed it would take her to run 1 k race =\frac{21.5}{3}

                                                                            = 7.17 minutes

7.17 minutes = 7 + (0.17 × 60) = 7 minutes 10 seconds

At this speed it takes her 7 minutes 10 seconds to run 1 k race.

Zigmanuir [339]3 years ago
4 0

Answer:

7 minutes and 10 secs

Step-by-step explanation:

You might be interested in
Determine the expression you can substitute for y in to solve the system below.
FromTheMoon [43]

Answer:

Step-by-step explanation:

given are the two following linear equations:

                       f(x)  =  y  = 1 +  .5x

                       f(x)  =  y  = 11 -  2x

Graph the first equation by finding two data points.  By setting first x and then y equal to zero it is possible to find the y intercept on the vertical axis and the x intercept on the horizontal axis.

           If x = 0, then  f(0)  =  1  + .5(0)  =  1

           If y = 0, then  f(x)  =  0  = 1  +  .5x

                                               -.5x  =  1

                                                    x  =  -2

           The resulting data points are  (0,1)  and  (-2,0)

Graph the second  equation by finding two data points.  By setting first x and then y equal to zero it is possible to find the y intercept on the vertical axis and the x intercept on the horizontal axis.

           If x = 0, then  f(0)  =  11  - 2(0)  =  11

           If y = 0, then  f(x)  =  0  = 11  -  2x

                                               2x  =  11

                                                    x  =  5.5

           The resulting data points are  (0,11)  and  (5.5,0)

At the point of intersection of the two equations x and y have the same values.  From the graph these values can be read as x = 4 and y = 3.

6 0
3 years ago
Log 3(x+5)- log 3(x-3) = 2
inessss [21]

Answer:

x = 4

Step-by-step explanation:

solate the variable by dividing each side by factors that don't contain the variable.

7 0
3 years ago
Read 2 more answers
The point (x, y) is the top of a polygon. Which point would it map to if the polygon were reflected over the y-axis and then tra
Pachacha [2.7K]
It’s either b or C because your going down.... but I think it’s B
7 0
3 years ago
2-(-2x-4)=3x+6-x what is the answer to that?
ruslelena [56]

98--8=

Step-by-step explanation:

3 0
2 years ago
PLESE HELP ME RN PLEASE
Alisiya [41]

Answer:

16+3x=22.75

22.75-16=6.75

6.75÷3=2.25=x

4 0
2 years ago
Other questions:
  • A rectangular field is 400 meters long and 300 meters wide area in square kilometers
    13·1 answer
  • The length of a rectangle is twice its width. The perimeter is 60 ft. Find its area.
    14·1 answer
  • Describe the solutions of 6+y <10 in words
    6·1 answer
  • What is the area of a rectangle with length (3^2)^2 meters and width of 3^2 meters?
    11·2 answers
  • A six-sided die with sides labeled 1 through 6 will be rolled once. Each number is equally likely to be rolled.
    14·1 answer
  • Let f(x)= 2x-1, h(x)= -x+5<br> Find (f of h)(3)<br> PLEASE HELP ASAP!!!!
    13·1 answer
  • HELP ME PLS IVE BEEN WAITING FOR 20 MIN HELP LOVE U GUYS &lt;3
    6·2 answers
  • The question of a number and 3 minus 2 is at least -12
    11·1 answer
  • C.P.=RS 180 S.P. =Rs 200 solve it step by step 'I'll give u brainest'​
    9·1 answer
  • What would happen if addition were not associative?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!