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
Zielflug [23.3K]
2 years ago
9

A 20 meter ladder rests vertically against the side of a barn. A pig that has been hitched to the ladder starts to pull the base

of the ladder away from the wall at a constant rate of 0.4 meters per second. Find the rate of change of the height of the top of the ladder after 30 seconds.
Mathematics
1 answer:
kirill115 [55]2 years ago
7 0

Answer:

I hope my drawing explains well lol... h = 16

Step-by-step explanation:

So basically first you need to find x (the one in the drawing), by doing so, you just have to use the formula,

speed =  \frac{distance}{time}

You substitute in the speed and the time given,

0.4 =  \frac{x}{30}  \\ x = 12

Then, you use the Pythagorean theorem,

h =  \sqrt{ {20}^{2}  -  {12}^{2} } \\  h = 16

You might be interested in
the first image is the question the second is the answer, and i need the in between of how the heck do i do this. the final is t
Paladinen [302]

Answer:

Step-by-step explanation:

sir in the graph every point is (X,Y) so you should choose consecutive random numbers for the X values for the first point after that put the values you choose In the equations so now you have just numbers in the equation .. add, subtract and multiply at the end you will get a value .. ok this Y for the first point .. mark this point on the graph and continued this process until it reached at least 3 points, and connected between them.

Note : do this with each equation separately and do not connecte between two points for two different equations

the equation with x will become as line

the equation with x² will become as arch

after you finsh drwaing see the points that the tow equation are touching within and write them. Usually it is two points

4 0
2 years ago
Read 2 more answers
A beach ball has a mass of 5 g and a volume of 20 cm3. What is the object's density? A. 4 g/cm3 B. 100 g/cm3 C. 0.25 D. g/cm3 4
Triss [41]
<h2>Hello!</h2>

The answer is:

C.  0.25\frac{g}{cm^{3} }

<h2>Why?</h2>

The density is the relation between the mass and the volume of an object. We are given four options to chose, and we can find the correct one by doing the following calculations:

Density=\frac{mass}{volume}=\frac{5g}{20cm^{3}}=0.25\frac{g}{cm^{3}}

So, the correct options is C.  0.25\frac{g}{cm^{3} }

Have a nice day!

7 0
3 years ago
Read 2 more answers
Hala, Ahmed and Eman have 90 sweets. They decide to divide them in the ratio of their ages, which are 2 years, 7 years and 9 yea
vivado [14]

Answer:

Hala would have 10 candies, Ahmed would have 35, and Eman would have 45.

Step-by-step explanation:

if the candy is given out 2:7:9, add the numbers and devide. 90 ÷ 18 is five so multiply each number by 5 to get 10:35:45

8 0
2 years ago
Devaughn is 14 years younger than Sydney. The sum of their ages is 52.What is Sydney's age?
artcher [175]
Set up an equation and solve:
2x-14=52
2x=66
x=33
sydney is 33 and devaughn is 19
5 0
3 years ago
Solving multi step equations 5/6k + 2/3 = 4/3
Tpy6a [65]

Answer:

k = 4/5

Step-by-step explanation:

First, rewrite 5/6k as (5/6)k; this is "five sixths of the variable k."

Next, identify the LCD.  It is 6.  Then the given equation becomes

5k + 4 = 8

Consolidate the constant terms:  

5k = 4

Solve for k: k = 4/5

5 0
3 years ago
Other questions:
  • A rhombus has diagonals 500 yd and 800 yd in length. Find the area in square miles.
    5·1 answer
  • James is solving the equation x^2+10x=50 by completing the square. What number must be added to both sides of the equation to co
    10·1 answer
  • Determine whether the measures for the figure shown are proportional. A) the length of a side and the perimeter. B) the length o
    12·1 answer
  • Explain why the absolute value of a number is always positive
    7·1 answer
  • Jeff drinks 2/3 of a glass of juice. which fraction is equivalent to 2/3?
    10·2 answers
  • What is 712 divided by 8 long division
    12·2 answers
  • Need help with this ASAP also have more questions on my account to if you guys could help me it’d be really appreciated
    12·2 answers
  • A city has 5 houses for every 8 old houses. If there are 35 new houses in the city, how many old houses are there?
    9·1 answer
  • gary and heather each make potatoes using different recipes the table shows how much potatoes and cheese each person uses.
    6·1 answer
  • Four students were asked to write a ratio equivalent to - Their answers are
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!