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
Alborosie
3 years ago
12

Donna has 6 hours to spend training for an upcoming race,she completes her training by running full speed the distance of the ra

ce and walking back the same distance to cool down. If she runs at a speed of 10 mph and walks at a speed of 2 mph, how long should she plan to spend walking back
Mathematics
1 answer:
LekaFEV [45]3 years ago
3 0
I'm sorry but I dont know
You might be interested in
A ball is thrown upward with an initial velocity of 40 feet per second from ground level. The height of the ball, in feet, after
Elena L [17]

It takes 1.875 seconds for the ball and the balloon to reach the same height

Step-by-step explanation:

A ball is thrown upward with an initial velocity of 40 feet per second from ground level

  • The height of the ball, in feet, after t seconds is given by h= -16 t² + 40 t

At the same time, a balloon is rising at a constant rate of 10 feet per second

  • Its height, in feet, after t seconds is given by h = 10 t

We need to find the time it takes for the ball and the balloon to reach the same height

∵ The height of the ball is given by h = -16 t² + 40 t

∵ The height of the balloon is given by h = 10 t

∵ They start at the same time t

∵ They have the same height h

Equate the two equations of h to find t

∴ -16 t² + 40 t = 10 t

- Subtract 10 t from both sides

∴ -16 t² + 30 t = 0

- Take -2 t as a common factor

∴ -2 t(8 t - 15) = 0

Equate -2 t by 0 and 8t - 15 by 0

∵ -2 t = 0 ⇒ divide both sides by -2

∴ t = 0 ⇒ initial time

∵ 8 t - 15 = 0 ⇒ add 15 to both sides

∴ 8 t = 15 ⇒ divide both sides by 8

∴ t = 1.875 seconds

It takes 1.875 seconds for the ball and the balloon to reach the same height

Learn more:

You can learn more about the equations in brainly.com/question/2977815

#LearnwithBrainly

6 0
4 years ago
5 hundreds 6 ten thousands 2 ones
dolphi86 [110]
The anwser is 526  because u have 5 hundreds and u have 6 ten thousands 2 ones  

8 0
3 years ago
Read 2 more answers
Which is the graph of the sequence defined by the function f(x +1)=2/3f(x) if the initial value of the sequence is 108
9966 [12]

We are given initial value of the function =108.

Therefore, f(0) = 108.

Let us find some values of the function to graph it.

\\f_1=f(1)=\dfrac{2}{3}f(0)= \dfrac{2}{3}\cdot 108=72,\\f_2=f(2)=\dfrac{2}{3}f(1)= \dfrac{2}{3}\cdot 72=48,\\ f_3=f(3)=\dfrac{2}{3}f(2)= \dfrac{2}{3}\cdot 48=32

Therefore, some of the terms of the sequence would be

108, 72, 48, 32...

We can see that function is decreasing exponentially by factor of 2/3.

Therefore, function would be y=108(2/3)^x

Now, we can plot the graph for exponential function y=108(2/3)^x

7 0
3 years ago
Question 15 of 25
Alika [10]

Answer:

s = \sqrt{V/h}

Step-by-step explanation:

divide by 'h', then take square root of 's' to get:

s = \sqrt{V/h}

4 0
3 years ago
Consider the system:
Gnom [1K]

Answer:

Step-by-step explanation:

In this problem, we have the following linear equations:

y=3x+5

y=ax+b

We know that a linear equation is an equation for a line. In a system of linear equations, two or more equations work together.

1.  What values for a and b make the system inconsistent?

A system is inconsistent if and only if the lines are parallel in which case the system has no solution. This is illustrated in the first Figure bellow. Two lines are parallel if they share the same slope. So, the system is inconsistent for:

a=3

for any value of b

2. What values for a and b make the system consistent and dependent?

A system is consistent if and only if the lines are the same in which case the system has infinitely many solutions. This is illustrated in the second Figure bellow. So, the system is consistent and dependent for:

a=3 and b=5

8 0
3 years ago
Read 2 more answers
Other questions:
  • What 2 numbers can you multiply to get 31? can 31 get into smaller groups?
    13·1 answer
  • Jason’s bank account balance was $300. He paid of his bills. Now, his account balance is -$50. Which equation can be used to fin
    11·2 answers
  • B = 3x + 53°<br> Solve for x and then find the measure of
    10·1 answer
  • Solve -0.25a + 3.8 = 4.6
    9·1 answer
  • HELP PLZ!!!!!!!!!!!!!
    12·1 answer
  • PLZZ HELP! Sara selects two cards at random from a standard deck of fifty-two cards. Which of the following could be used to cal
    15·1 answer
  • Tom has a fair spinner with six sides. They are labelled red, red, blue, green, red, blue. Choose the word that best describes t
    8·1 answer
  • Yuhhhhhhhhhelp plss
    9·1 answer
  • Evaluate the expression when c=4. c^4 + 6
    11·1 answer
  • A polynomial function p (x) has degree 3, and its zeros are –3, 4, and 6. What do you think is the equation of p (x)? Do you thi
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!