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
Ber [7]
4 years ago
14

Galileo wanted to release a wooden ball and an iron ball from a height of 100 meters and measure the duration of their fall. He

found a plane with an incline of 12 degrees that he could climb until he could get to an altitude of 100 m. How far should Galileo walk up the inclined plane? Round your final answer to the nearest hundredth.
Mathematics
1 answer:
ICE Princess25 [194]4 years ago
5 0
For this case what you have is the same as a rectangle triangle where you have as data the degree of inclination of the hypotenuse with respect to the base and the height of the triangle.
 We have to find the value of the hypotenuse.
 For this we use the following trigonometric relationship:
 senx = C.O / h
 Where
 x: angle
 C.O: opposite leg
 h: hypotenuse.
 Substituting the values we have:
 sen (12) = 100 / h
 We cleared h:
 h = 100 / sin (12)
 h = 480.97 m
 Answer: 
 Galileo should walk 480.97 m up the inclined plane
You might be interested in
What is 100,000,000 written as a power of ten?<br> a. 10^8<br> b. 10^9<br> c. 10^10<br> d. 10^11
Minchanka [31]
100,000,000 = 100 \times 10^6 = 1\times 10^8\\~~\underbrace{~~~~~~~~~~~~~~~}\\~~~~~~~~~8

Your answer is a. 10^8
7 0
3 years ago
Label the sides of the triangle with leg, leg, and hypotenuse.​
Softa [21]

Answer:

Step-by-step explanation:

5. is hypothenuse because it is across from the right angle

3. and 4. are legs

3 0
3 years ago
Read 2 more answers
A 35 ft ladder reaches a window that is 25 feet high. What is the angle of elevation the ladder forms with the ground? A. 44.4 C
VMariaS [17]

Answer:

D

Step-by-step explanation:

Sin(x)=25/35=5/7

=> x = 45.6

8 0
3 years ago
Part 1. Using the two functions listed below, insert numbers in place of the letters a, b, c, and d so that f(x) and g(x) are in
VladimirAG [237]

Answer:

The options are endless.

You do have the following requirements to the letters asked about:

c=b  (neither of these can be 0)

d=a

So here is one example:

Choose c=b=4 and d=a=9.

The functions will be:

f(x)=\frac{x+9}{4} and

g(x)=4x-9

Step-by-step explanation:

I'm going to assume my comment above.

In order for f and g to be inverse f(g(x)) has to give you x and g(f(x)) also has to give you x.

f(g(x))

f(cx-d)

\frac{(cx-d)+a}{b}

\frac{cx-d+a}{b}

\frac{cx+(-d+a)}{b}

\frac{cx}{b}+\frac{-d+a}{b}

We want this to equal x.

This means we need the following to happen:

\frac{c}{b}=1 \text{ and } \frac{-d+a}{b}=0

The first one happens when c=b assuming b isn't 0 since you can't divide by 0.

The second one happens when the top is 0 because that is the only way a fraction will output you 0 is if the numerator is 0.

So we d=a as well.

So this is what we need for f and g so that they are inverse:

f(x)=\frac{x+d}{c} since d=a and c=b

g(x)=cx-d

Let's try to see if we get x when doing both f(g(x)) and g(f(x)).

f(g(x))

f(cx-d)

\frac{(cx-d)+d}{c}

\frac{cx-d+d}{c}

\frac{cx}{c}

x

We have confirmation that f(g(x))=x.

g(f(x))

g(\frac{x+d}{c})

c(\frac{x+d}{c})-d

x+d-d

x

So f(x)=\frac{x+d}{c} and g(x)=cx-d are inverses for all choices c and d except when c is 0 since you are not allowed to divide by 0.

Your question says to insert numbers for c (=b) and d (=a).

So an example:

Let b=c=4 and d=a=9.

Let's try it:

These will be our functions with those choices for the constant variables:

f(x)=\frac{x+9}{4} and g(x)=4x-9

f(g(x))

f(4x-9)

\frac{(4x-9)+9}{4}

\frac{4x}{4}

x

We have f(g(x))=x.  Check mark, there.

g(f(x))

g(\frac{x+9}{4})

4(\frac{x+9}{4})-9

x+9-9

x

5 0
3 years ago
Read 2 more answers
Which expression is equivalent to negative 4 times 4 times 4 times 4 times 4 times 4 times 4 times 4?
nataly862011 [7]

Answer:

-4*4^7

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • Thomas needs at least 8 apples to make an apple pie. He has 3 apples. If x represents the number of apples Thomas still needs, w
    12·2 answers
  • 2^6-8(15 divided by 5)
    9·2 answers
  • 5x+6y=13;-5x+2y=11. how do I solve this
    6·1 answer
  • Slope is found by dividing the change in ____ by the change in ____. x; y y; x
    11·1 answer
  • HELP
    14·2 answers
  • Select the symbol that represents the phrase "no more than."<br><br> &lt;<br> &gt;<br> ≤<br> ≥
    12·1 answer
  • Which two features are present in a plant cell but not in an animal cell
    15·2 answers
  • Is 15.19 less than 15.162?
    7·2 answers
  • Solve for j.<br> 3 + 4<br> 2<br> -3
    6·1 answer
  • Middle school problem attached :D
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!