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
Anit [1.1K]
3 years ago
8

A painter is asked to paint the exterior of a dome, excluding the bottom, which has a diameter of 9 ft. The painter already has

one gallon of paint which will cover 105 ft2.
How much more paint will the painter have to purchase to complete the job with the least amount of waste, calculated with a precision of 0.00?

Mathematics
1 answer:
astraxan [27]3 years ago
3 0
Area of the dome is given by:
A=1/2(4πr²)=2πr²
thus:
A=2×3.14×(9/2)²
A=127.17 ft²
Thus the remaining area to be painted will be:
127.17-105
=22.17 ft²

Amount of paint required will be:
22.17/105*1=0.211 gallons
Thus the best approximation is:

A] 1 quart covers 26.25 ft²
You might be interested in
A math class has a total of 31 students. The number of females is seven less than the number of meals. How many miles and how ma
Nadusha1986 [10]

Answer:

Male-19&Female-13

Step-by-step explanation:

See the image for solution

Hope it helps

Have a great day

3 0
2 years ago
10 people want to share 84 pounds of candy so that each person gets the same amount. Exactly how many pounds of candy should eac
kotegsom [21]
8.4 pounds each is what they should do

3 0
3 years ago
Read 2 more answers
Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. She randomly picks three coins. Each time she picks a coin, she
Mashutka [201]

Answer:

(1) .20 (2) .40 (3) .12 (4) Less than

Step-by-step explanation:

You have to look at the table.  There are 5 columns with 10 rows.  5x10=50

Then simply count the boxes that have the correct number of currency for instance, if they are asking for EXACTLY 1 dime then you rule out the ones that have 2 or 3 dimes and only the count the ones that have a single dime.   So you count PDN but you would not count PDD.  There are 20 boxes that have a single dime in them.  20 out of the 50 boxes. 20/50=.40 (answer 2)

The estimated probability that exactly two of the three coins Avery randomly picked are nickels is . 20

The estimated probability that exactly one of the three coins Avery randomly picked is a dime is . 40

The estimated probability that all three coins Avery randomly picked are pennies is . 12

The answer to #1 is .20 or 20% and the answer to #2 is .40 or 40%.  20% is less than 40% so...

The estimated probability that exactly two of the three coins Avery randomly picked are nickels is  LESS THAN the estimated probability that exactly one of the three coins Avery randomly picked is a dime.

4 0
3 years ago
a local high schools cheerleading squad is selling snow cones during lunch to raise money for a national cheerleading competitio
svlad2 [7]
We have:

Volume of cone = 535 cm³ at the maximum
Height of cone= 8cm

We know the formula to find volume of cone is \frac{1}{3} r^{2}  \pi h

We need to find the radius of the base of the cone
535= \frac{\pi  r^{2}8} {3}
535*8= \pi  r^{2}
\frac{4280}{\pi}= r^{2}
r= \sqrt{ \frac{4280}{ \pi}   }
r=36.9 to the nearest one decimal place

The width of the opening of the cone is the diameter of the circle. Diameter is twice the radius, hence 2×36.9=73.8 cm
8 0
3 years ago
An assembly line has two inspectors. The probability that the first inspector will miss a defective item is 0.06. If the defecti
Novay_Z [31]

Answer:

probability that both passes a defective item is  0.8742‬

<h3>Step-by-step explanation:</h3>

probability that the first inspector misses is Pr( 1st misses)= 0.06

therefore the probability he does not miss is

Pr(1st passes)= 1 - Pr( 1st misses) = 1 - 0.06 = 0.94

probability that the second misses is Pr( 2nd misses) = 0.07

therefore probability that 2nd does not miss is

Pr( 2nd passes) = 1- Pr( 2nd misses) = 0.93

probability that both passes a defective item is  Pr(1st passes)*Pr( 2nd passes)

= 0.93*0.94 = 0.8742‬

7 0
3 years ago
Other questions:
  • Solve using systems of equations. -3x-4y=-8 <br> 3x+3y=9
    5·1 answer
  • Write the sentence as an equation the product of 187 and n is the same as 264
    7·1 answer
  • What is the best way to get my answers?
    11·1 answer
  • Help needed asap!!,.........
    7·1 answer
  • Joe does push-ups, sit-ups, and jumping jacks. He does these in a different order every day. How many different orders are possi
    7·2 answers
  • For a line that goes through points (2,-2) and (1.-6), what is the equation
    8·1 answer
  • A golf ball,thrown upwards ,rises at a speed of V metres per second the ball reaches a maximum height of h metres. h is proporti
    7·1 answer
  • Which fraction is not equal to 2/3?
    12·2 answers
  • Can someone help me with this?
    10·1 answer
  • Can someone help me with this question? I’ll mark you brainliest if you answer!!!
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!