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
kenny6666 [7]
4 years ago
10

A room has three lightbulbs. Each one has a 30% probability of burning out within the month. Write the probability as a percenta

ge rounded to one decimal place.
What is the probability that at the end of the month at least one of the bulbs will be lit?
Mathematics
1 answer:
lesantik [10]4 years ago
3 0

Answer:

97.3%

Step-by-step explanation:

Let the three bulbs be A, B and C respectively.

Let P(A) denote the probability that the first bulb will burn out

Let P(B) denote the probability that the second bulb will burn out

Let P(C) denote the probability that the third bulb will burn out

Now, we are told that Each one has a 30% probability of burning out within the month.

Thus;

P(A) = P(B) = P(C) = 30% = 0.3

Now, probability that at the end of the month at least one of the bulbs will be lit will be given as;

P(at least one bulb will be lit) = 1 - (P(A) × P(B) × P(C))

P(at least one bulb will be lit) = 1 - (0.3 × 0.3 × 0.3) = 0.973 = 97.3%

You might be interested in
Rewrite quadratic equation<br> -×^2+2x-10
Lostsunrise [7]
It has no solution because it is not factorable 
6 0
3 years ago
Read 2 more answers
The least common denominator of two fractions is 24.if you add the two denominators,their sum is 14.What are the denominators?
melamori03 [73]
The two denominator would be 6 and 8 because they both = 14 and the lcm of both are 24
4 0
3 years ago
Can anyone please help me??? It’s for a test
Nimfa-mama [501]

Answer:

They provide you with a graph that already has all the numbers and there is a data table. The data table lists all the numbers you have to plot onto the graph.

How to graph: The first number is 27, which is the vehicle weight in hundreds of lbs. On the graph, you can see that on the x-axis, it says weight (in hundreds of lbs). So first, look at the x-axis numbers and find somewhere between 25 and 30 and try to estimate where 27 would be.

Now look at the city MPG value that corresponds to 27, the weight value. It is 25. That's perfect because it is exactly the intervals the graph is in. So find 25 on the y-axis since the y-axis represents the city MPG. Now draw a straight line from the 25 on the y axis to the right. Then, draw a line from the 27 on the x axis straight up and where the two meet is the first point. Obviously, you don't need to make it that complicated if you don't need all the extra steps to understand but it is just in case you don't know how to graph the points.

Repeat for the rest of the points (make sure you use the correct corresponding points). Good luck on your test!

Step-by-step explanation:

6 0
3 years ago
A pyramid has a square base. The base edge is one-half of the height of the pyramid. If the base edge is 6 units, what is the vo
Flura [38]

Answer:

144 cubic units

4 0
2 years ago
First CORRECT answer WILL get Brainliest. If you can’t see zoom in! Do not answer if you don’t know. Don’t guess either. Sorry I
Alexxx [7]

Answer:

<em>26 ft^2</em>

Step-by-step explanation:

Let us imagine a rectangle around this figure, provided a rectangle with dimensions 5 feet by 7 feet. If we were to subtract the non - shaded region in this rectangle from the rectangle's area itself, it would save as some time to solve for the area of the shaded region;

<em>Area of Outer Rectangle ⇒ 5 * 7 = 35 ft^2</em>,

Now this non - shaded region is composed of a triangle and a rectangle, the triangle having dimensions 3 by 2 feet, the rectangle being 2 by 3 feet consecutively;

<em>Area of triangle ⇒ 1/2 * base * height = 1/2 * 3 * 2 = 3 ft^2</em>,

<em>Area of rectangle ⇒ length * width = 2 * 3 = 6 ft^2</em>

Thus the area of the shaded region is: 35 - 3 - 6 = 26 ft^2;

<em>Answer: 26 ft^2</em>

5 0
3 years ago
Other questions:
  • Write each percent as a fraction in simplest form and as a decimal to the nearest hundredth.
    6·1 answer
  • 0 TIME REMAINING 18:27 Melinda takes out a loan to purchase a car. The balance on her loan after x months is represented by the
    15·1 answer
  • Select the mixed fractions that represents the shaded area of the figure.h
    12·1 answer
  • A box in the shape of a right rectangular prism has a length of 8.5 inches, a width of 4.5 inches, and a height of 3.75 inches,
    10·2 answers
  • Solve the equation. - 1/3m – 7 = 5 A. –4 B. –15 C. –36 D. 6
    8·1 answer
  • Area of triangles and parallelograms
    10·2 answers
  • Which expression shows the correct way to find the distance between (18, 20) and (32, 16)?
    5·2 answers
  • Square root of 250/10.<br> I don’t know how to properly ask the question so I provided a picture:
    6·1 answer
  • Hw help please ASAP<br> +10PTS
    11·2 answers
  • question 3(multiple choice worth 5 points) (03.05 lc) the height of a cylinder is 4 units. its radius is 5 units. what is the vo
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!