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
Arada [10]
3 years ago
10

A tortoise is walking in the desert. It walks at a speed of 2 meters per minute for 2.56 meters. For how many minutes does it wa

lk?
Mathematics
1 answer:
zaharov [31]3 years ago
8 0

distance = rate * time

2.56 meters = 2meter/min * t

divide by 2 on each side

2.56/2 =t

1.28 minutes =t

You might be interested in
Answer this math quedtion <br> 40s+(2b)s+200
Elina [12.6K]
Is it supposed to be equal to something, maybe "0"? You wouldn't be able to solve this without that.
5 0
3 years ago
Is p(x)= |x| an inverse function
docker41 [41]

Answer:

Step-by-step explanation:

p(x) = |x|

in : R  let : y = |x|

calculate : x

y² = |x| ²

y² = x²

y² - x²= ( y - x)( y +x) by identity

y = x or y = - x

the inverse : y = x or y = - x

conclusion : the inverse is : g(x) = |x|

4 0
3 years ago
Read 2 more answers
A lacrosse player throws a ball into the air from a height of 6 feet with an initial vertical velocity of 64 feet per second. Wh
-Dominant- [34]

Answer:

Step-by-step explanation:

I'm going to use calculus to solve this, because it's the simplest way.  

The acceleration due to gravity in feet is the second derivative of the position function.  We will start with the acceleration and work backwards with antiderivatives to get to the position function.

a(t) = -32.  Going backwards and using the fact that the initial vertical velocity is 64 ft/sec, our velocity function is

v(t) = -32t + 64.  Going backwards and using the fact that the initial height of the ball is 6 feet, our position function is

s(t)=-16t^2+64t+6

The first part of this question asks us the maximum height of the ball.  From Physics, we learn that the maximum height of a projectile is reached when the velocity is 0, which happens to be right where the projectile stops for a nanosecond in the air to turn around and come back down.  We set the velocity function equal to 0 and solve for t.

0 = -32t + 64 and

0 = -32(t - 2).  By the Zero Product Property, either -32 = 0 or t - 2 = 0.  It's obvious that -32 does not equal 0, so t - 2 must equal 0.  Solving this for t:

t - 2 = 0 so

t = 2 seconds.  Since the maximum height is reached at a time of 2 seconds, we plug 2 seconds into the position function to get its position at 2 seconds (which is also the max height of the ball).

s(2)=-16(2)^2+64(2)+6 and

s(2) = -64 + 128 + 6 so

s(2) = 70 feet

Now we want to know when the ball will hit the ground.  "When" is a time value, and we know that the height of the ball on the ground is 0, so we sub in a 0 for s(t) and factor the quadratic.

Using the quadratic formula:

t=\frac{-64+/-\sqrt{4096-4(-16)(6)} }{-32} and

t=\frac{-64+/-\sqrt{4480} }{-32} which gives us the 2 solutions

t=\frac{-64+\sqrt{4480} }{-32} and

t=\frac{-64-\sqrt{4480} }{-32}

Plugging into your calculator, the first t = -.0916500 and the second t = 4.091

We all know that time cannot ever be negative, so our t value is 4.09.

Again, from Physics, we know that a projectile reaches it max height at halfway through its travels, so it just goes to follow logically that if it halfway through its travels at 2 seconds, then it will hit the ground at 4 seconds.  And it does!! How awesome is that?!

4 0
3 years ago
Identify the percent, amount, and base in this problem.<br> What percent of 80 is 40?
STALIN [3.7K]

Answer:

<h2>50</h2>

Step-by-step explanation:

<h3>40: 80x100 =</h3><h3>100 =(40x100): 80 =</h3><h3>100): 80 =4000: 80 = 50</h3>

5 0
3 years ago
How else can the ratio 14:1 be written?<br> A. 1.4<br> B. 14/1<br> C.1/14<br> D. 1:14
lukranit [14]

Answer:

b

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • If we express $-2x^2 + 4x + 5$ in the form $a(x - h)^2 + k$, then what is $k$?
    9·1 answer
  • 10 2/5 x 15 5/6 and 1 1/3 x 1 1/3
    9·1 answer
  • 10.The function f(x) is shown below:
    6·2 answers
  • Find the axis of symmetry of y=x^2-12x+8
    10·1 answer
  • An initial population of 7 chipmunks increases by 6% each year. If the function f(x) = ab^x models this situation, which functio
    10·1 answer
  • A pipe can pump 1000 gallons of water in 4 hours.
    11·2 answers
  • Lakita is going to plant trees and bushes to landscape her new yard. She cannot exceed her budget of $150. Each tree costs $45,
    10·1 answer
  • Please help if u can
    13·2 answers
  • Given the endpoint x(11,-2) and the midpoint (4,3) find the missing endpoint y. Write answer as order pair.
    5·2 answers
  • The sum of two numbers is 79. Three
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!