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
djverab [1.8K]
3 years ago
13

Lisa is standing on a dock beside a lake. She drops a rock from her hand into the lake. After the rock hits the surface of the l

ake, the rock's distance from the lake's surface changes at a rate of −2 inches per second. If Lisa holds her hand 5 feet above the lake's surface, how far from Lisa's hand is the rock 4 seconds after it hits the surface?
Mathematics
2 answers:
Lemur [1.5K]3 years ago
7 0

Answer:

  • 5 ft 8 in or 68 in

Step-by-step explanation:

<u>In 4 seconds the rock will be at:</u>

  • 2*4 = 8 in from the surface

<u>Add 5 feet to this to get the required distance:</u>

  • 5 ft + 8 in = 5*12 in + 8 in = 68 in
luda_lava [24]3 years ago
3 0

Distance after 8s:-

\\ \rm\longmapsto 4(-2)=-8in

Now

Distance:-

\\ \rm\longmapsto 5-(-8)

\\ \rm\longmapsto 5ft+8in

  • 1ft=12in

\\ \rm\longmapsto 5ft+3/4ft

\\ \rm\longmapsto 23/4ft

\\ \rm\longmapsto 5.7ft

  • Convert to in

\\ \rm\longmapsto 5.7\times 12

\\ \rm\longmapsto 68in

You might be interested in
Find the volume of a cylinder with a diameter of 8 inches and a height that is 3 times the radius. Use 3.14 for pi round answer
masha68 [24]

Answer:

603.19

Step-by-step explanation:

v=πr^{2} h

pi is 3.14

Radius= Diameter/2= 4, so r square= 16

Height= Radius*3=12

So volume= 3.14*16*12=603.19

6 0
3 years ago
How do you add with a negative number?
Cloud [144]
You just subtract the number
4 0
2 years ago
Read 2 more answers
What’s the LCM for 22, 44 show your work
Anna [14]
The Lowest common multiple of 22 and 44 would be 22 because each of the numbers are divisible by it. So 22 / 22 = 1 and 44 / 22 = 2
4 0
3 years ago
How does a fraction model help you
goblinko [34]

Answer:

Fraction models can help clarify ideas that are often confused in a purely symbolic mode and construct mental terms that help them to perform fraction tasks meaningfully.

Step-by-step explanation:

3 0
3 years ago
63 miles in 270 minutes, what is the average speed in miles per hour
bearhunter [10]

Answer:

14 miles per hour

Step-by-step explanation:

Convert 270 minutes to hours first= 4.5hrs

Then divide 63 by 4.5= 14

5 0
3 years ago
Other questions:
  • Alice, Bernice, and Cheryl shared some stamps in the ratio 8 : 9 : 18. Alice received 184 stamps. Find the number of stamps that
    7·1 answer
  • I need help with this please
    13·1 answer
  • Evaluate the following using the powers of ten rules.<br><br><br> 100 divided by 2658
    7·1 answer
  • Which number is composite A 19 B 23 C 33 D 37​
    13·2 answers
  • Solve for x:
    15·2 answers
  • ¿Cómo se escribe la multiplicación 713 × 49, descomponiendo ambos números?​
    7·1 answer
  • Which equation has a graph that is parallel to the graph of 2x - y = -1?
    10·1 answer
  • Graph the line.<br> 2x - 3y = -9
    13·1 answer
  • in the given figure ,o is the centr of the circle, ab is the diameter and do is perpendicular to ab. prove that angle AEC= ANGLE
    11·1 answer
  • Solve the simultaneous equations<br> 3x + y = 25<br> 2x – y = 10
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!