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
Alla [95]
3 years ago
14

A survey indicated that 2 out of 4 doctors used brand X aspirin. If 1000 doctors used brand X, how many doctors were surveyed? P

lease show work!
Mathematics
1 answer:
Ratling [72]3 years ago
8 0
We can set this up as a proportion.

Since 2 is proportional to 1000, then 4 is proportional to "doctors surveyed".

\frac{2}{4}  =  \frac{1000}{d} where d is the doctors surveyed.

Cross multiply.

2d = 4000
d=2000

2000 doctors were surveyed.
You might be interested in
Simplify. Write your answer with a positive exponent.<br><br><img src="https://tex.z-dn.net/?f=%285q%5E4%29%5E3" id="TexFormula1
tresset_1 [31]

Answer:

5q^7

Step-by-step explanation:

When multiplying exponents(if positive), you must add them together. So, (5q^4)³ will be 5q^7 because the exponents were positive and they were multiplying so you add them together and leave the variable and number 5 alone.

Hope this helps! :)

4 0
3 years ago
Read 2 more answers
The marginal cost function of producing q mountain bikes is 600/0.3q+5.
wariber [46]
MArginal cost is the adjustment in all out cost that emerges when the amount created changes by one unit.(In another word subordinate of cost wrt unit) 
So we coordinate to get Cost work 
∫30 600/0.3q+5 (dq) 0
we get 9798.66 from joining. 
We add that to settle cost 2059.23+2200=4259.24 
So 4259.24 is the cost. 
Income from offering the bicycle is 205*30=6150 
and Profit=Revenue-Cost 
6150 - 4259.24=1890.76 
Presently Marginal Profit 
MArginal benefit is the term used to allude to the contrast between the minor cost the peripheral income for delivering one extra unit of creation. 
Marginal Profit=Marginal Revenue-Marginal Cost 
Marginal Cost=600/0.3q+5. 
We should connect to 31 to get 41.958 
Revenue= 205q 

Marginal rev=205 
Marginal Profit = 205-41.958=163.042

4 0
3 years ago
Ann and Betty shared a sum of money in the ratio 2:3 Ann received $120 what was Betty's share
const2013 [10]
Set up a proportion

2/3= 120/x

2*60=120
3*60=180
x=180

Final answer: $180
3 0
3 years ago
Read 2 more answers
In the movie industry, the release date of a film is very important (this is true of any good, but let's consider movies for now
Alborosie
(a) Profit equation
Profit = revenue - cost
unit profit = revenue per unit - cost per unit = 16-7.3=8.7
profit
p(x) = (unit profit)*x=8.7x

(b) profit over time
sales,
x(t) = 1000 * (100 * (ln(t^2+87)+48.8)
=100000 ln(t^2+0.87)+48800

profit,
P(t)
=p(x(t))-5200000
=p(100000 ln(t^2+0.87)+48800)-5200000
=8.7(100000 ln(t^2+0.87)+48800)-5200000
=870000*ln((t^2+0.87))-4775440

(c)
Break even quantity is when p(x)-5200000=0, 
solving,
8.7x-5200000=0 =>
x=5200000/8.7
=597701.1
=597702 (rounded to next integer)

(d)
Time t to reach break even is when
P(t)=0
or
solve for t in 
870000*ln((t^2+0.87))-4775440=0
ln(t^2+0.87)=4775440/870000=5.489
raise powers to base of e
t^2+0.87=e^(5.489)=242.018
t=sqrt(242.018-0.87)=15.53 months.
7 0
3 years ago
The profit a business earns by selling aa items is given by the polynomial function: p(x) =x(160 − x) − (100x +500). What is the
HACTEHA [7]

Answer:

The last rem of the polynomial is -500          

Step-by-step explanation:

We have given that the profit a business earn by selling items is given by polynomial p(x)=x(160-x)-(100x+500)

We have to find the last term of the polynomial when it is written in standard form

For writing in standard form first we have to do operation on the polynomial

So p(x)=x(160-x)-(100x+500)=160x-x^2-100x-500=-x^2+60x-500

So the last rem of the polynomial is -500  

6 0
3 years ago
Other questions:
  • During the grand opening of an electronics store, any customer has an 11% chance of winning a free laptop. What is the chance th
    9·2 answers
  • The temperature at noon is -4 degrees Celsius. The temperature at 6:00pm is -12 degrees Celsius. What is the difference between
    9·1 answer
  • Given that √3^n = 3^x/27^y. Express n in terms of x and y.
    15·1 answer
  • Use the quadrant system to find the area of the polygon shown
    12·1 answer
  • Solve Equation <br> x^2 -4x +8 = 0
    5·1 answer
  • A regular decagon has 10 sides
    7·2 answers
  • (-5) ÷ (-7) = _____<br><br><br> - <br> 35<br> -35
    6·2 answers
  • Who ever gets this right will get brainleist 100%
    12·1 answer
  • 10 lbs to 6 lbs need percentage<br>please give step by step
    15·2 answers
  • I need help, please and thank you
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!