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
satela [25.4K]
3 years ago
7

The cleaning crew cleans 100 homes per week and earns a weekly economic profit of $200. the cleaning crew charges $80 per home.

what is the cleaning crew's total cost per week?
Mathematics
1 answer:
loris [4]3 years ago
8 0
$80(100) + $200 = $8200
You might be interested in
WILL MAKE BRAINLIEST!!! A Ferris wheel has a diameter of 220 feet and the center of the wheel is 125 feet above the ground. The
daser333 [38]
Since the radius of a circle is half its diameter, the radius of our Ferris wheel is r= \frac{220}{2} =110ft

Next, we are going to convert from revolutions per minute to degrees per second.
We know that t<span>he wheel makes a complete turn every 2 minutes, so it makes a complete turn in 120 seconds. Since there are 360° in a complete turn, we can set up our conversion factor:
</span>\frac{1*360}{120}=3 degrees per second 
<span>
Now, lets find the height:
</span>We know that <span>the passenger is at the lowest point on the wheel when t=0; since the wheel is 125 feet above the ground, at t=0 h=125. To find t at the top, we are going to take advantage of the fact that the wheel will turn 180° from the lowest point to the top and that it turns 3° every second:
</span>t= \frac{180}{3}
t=60
Notice that the height at the top is the diameter of the wheel plus the height above the ground, so h=220+125=345.

To model the situation we are going to use the cosine function, but notice that cos (\alpha) is 1 when \alpha =0 and -1 wen \alpha =180. Since we want the opposite, we are going to use negative cosine.
Notice that we want \alpha =180 when t=60, so we are going to use -cos(3t). Next, we are going to multiply our cosine by the radius of our wheel: -110cos(3t), and last but not least we are going to add the sum of the radius of the wheel plus the height above the ground:
h=110+125-110cos(3t)
h=225-110cos(3t)

Now that we have our height function lets check if everything is working:
<span>the passenger is at the lowest point at t=0; we also know that the lowest point is 125 feet above the ground, so lets evaluate our function at t=0:
</span>h=225-110cos(3t)
h=225-110cos(3*0)
h=125 feet 
So far so good. 
We also know that at t=60, our passenger is 345 feet above the ground, so lets evaluate our function at t=60 and check if coincides:
h=225-110cos(3t)
h=225-110cos(3*60)
h=225-110cos(180)
h=345feet 

We can conclude that cosine function that express the height h (in feet) of a passenger on the wheel as a function of time t (in minutes) ) is: h=225-110cos(3t)
8 0
3 years ago
Describe what a vaccine is made of and how it helps prevent infection.
12345 [234]

Answer:

Vaccines are made of mixtures that contain either parts of pathogens or whole pathogens that prepare the body's defenses to fight against the pathogens.

hope it helps.

<h2>stay safe healthy and happy...</h2>
6 0
3 years ago
Is AJKL = AMNO? If so, name the congruence postulate that applies.
romanna [79]
Answer:A that is what I think the answer is
6 0
3 years ago
Sharnae raised $52 less than lee during a school fundraiser. Lee raised $384. How much did sharnae raised?
neonofarm [45]

Answer:

$352

Step-by-step explanation:

So subtract the amount Lee made from the $52 and you get your answer. i hope i help u

6 0
3 years ago
PLEASE HELP!! WILL GIVE BRAINLY!!!
alexgriva [62]

Answer:

x = 102 degrees

Step-by-step explanation:

Since the line is through parrallel lines, we know that angle 2 and angle 7 will be equal to each other, so all you have to do is set the equations equal to each other to solve.

2x-37 = x+65

Subtract x from the left to isolate the variable and add 37 to the right.

x = 102

7 0
3 years ago
Other questions:
  • Find the value of X°<br> a.25°<br> b.85°<br> c.75°<br> d.105°
    14·1 answer
  • If the probability of an event is 2/7, what must be the probability of its complement?
    10·2 answers
  • Help please! Math Nation Section 6 Test Yourself Practice Tool.
    10·2 answers
  • Please help math 30+ points
    11·1 answer
  • PLEASE, I NEED HELP!!!!<br> MATHS!!!
    11·1 answer
  • How much more interest is earned on an investment of $12,585 at 3.5% interest over 5 years if the interest is compounded annuall
    9·2 answers
  • Ok i hope this is the last one 26 yd.=_in.
    15·2 answers
  • Please help me on this its the last question i will mark brainliest
    8·2 answers
  • A busy candy store is going to replace their current gumball machine
    10·1 answer
  • George is reading a book. On Monday he reads 1/3 of the book. On Tuesday he reads three - tenths of the remaining pages. He has
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!