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
Finger [1]
3 years ago
8

At a self-service gas station, 40% of customers pump regular gas, 35% pump midgrade, and 25% pump premium gas. Of those who pump

regular, 30% pay at least $30. Of those who pump midgrade, 50% pay at least $30. And of those who pump premium, 60% pay at least $30. (a) What is the probability that the next customer pumps premium gas and pays at least $30? (b) What is the probability that the next customer pays at least $30? (c) What fraction of customers who pay at least $30 pump premium gas?
Mathematics
1 answer:
Aleks04 [339]3 years ago
6 0

Answer:

0.150,0.595

Step-by-step explanation:

Given that at a self-service gas station, 40% of customers pump regular gas, 35% pump midgrade, and 25% pump premium gas. Of those who pump regular, 30% pay at least $30. Of those who pump midgrade, 50% pay at least $30. And of those who pump premium, 60% pay at least $30.

               Regular gas          Midgrade         Premium gas      Total

Percent      40                            35                     25                   100

atleast 30   30%                         50%                 60%

a) The   probability that the next customer pumps premium gas and pays at least $30

=0.25*0.60\\=0.150

b)        the probability that the next customer pays at least $30

= P(regular and pays atleast 30%)+P(premium and pays atleast 30%)+P(midgrade and       pays atleast 30%)

=0.40*0.30+0.35*0.50+0.25*0.60\\=0.12+0.175+0.30\\=0.595                  

You might be interested in
You have two spheres. Sphere a has radius ra and sphere b has radius rb = kra. What is b's volumevb intermsofva andk? Vb = va
lidiya [134]

V_a=\dfrac{4}{3}\pi r_a^3\\\\V_b=\dfrac{4}{3}\pi r_b^3\\\\V_b=\dfrac{4}{3}\pi(kr_a)^3\qquad\text{substitute for $r_b$}\\\\V_b=k^3V_a

5 0
3 years ago
Find the value of x in the triangle shown below. x = 56° 99°​
anyanavicka [17]

Answer:

x = 25 degrees

Step-by-step explanation:

All angles in a triangle should add up to 180 degrees. So to solve for x, set up an equation where all three angles added up equals 180.

180 = 99 + 56 + x

180 = 155 + x

25 = x

The unknown angle is equal to 25 degrees.

4 0
3 years ago
What is the surface area of sphere with radius 13 ft?
9966 [12]
SA=4pir^2
SA=4pi13^2
SA=4pi169
SA=676pi ft^2
6 0
3 years ago
Read 2 more answers
Roy purchased different cardboard pieces that had the same ratio of the length to the width. The table below shows the length an
Elza [17]
There is no picture to show me the graph. I am sorry
8 0
2 years ago
Read 2 more answers
What is the solution to this equation? 3(4x + 3) = 2x - 5(3 - x) + 2 A. B. C. D.
RideAnS [48]

Answer:

Exact form - x= - 22/5

Decimal form - x=-4.4

Mixed Number form - x= -4 2/5

Step-by-step explanation: Isolate the variable by dividing each side by your factors that don't contain variables.

3 0
3 years ago
Other questions:
  • A number added to itself twelve times is five more than twice the number what is the number
    12·1 answer
  • ANSWER PLS PLS PLS<br><br> Solve the proportion!<br><br> <img src="https://tex.z-dn.net/?f=-%5Cfrac%7B6%7D%7B7%7D%3D%5Cfrac%7Bn%
    15·1 answer
  • Someone please answer and show work quick (15 points) do b please
    8·1 answer
  • Which fraction divided by 3/6 is equal to -9/10
    9·1 answer
  • A company finds 5 defective toys in a sample of 600 predict how many defective toys are in a shipment of 24,000
    6·1 answer
  • The total length of rope, in feet, used to put up tents is 60 times the number of tents
    13·2 answers
  • Calcule:<br><br><br> a) (m-1/2)² b) (a/2-1)²
    6·1 answer
  • A candy store makes a 13–pound mixture of gummy bears, jelly beans, and gobstoppers. The cost of gummy bears is $1.00 per pound,
    9·2 answers
  • In hopes of encouraging healthier snacks at school, Janice brought in a tray 1 point
    15·1 answer
  • Anton is buying supplies for a charity event.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!