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
klasskru [66]
3 years ago
15

What is the area of the circle with a D equals 10

Mathematics
1 answer:
Maslowich3 years ago
7 0

Answer:

A =78.5

Step-by-step explanation:

We need the radius to find the area of a circle

r = d/2 = 10/2 =5

The area of a circle is given by

A = pi r^2

A = 3.14 (5)^2

A =3.14 (25)

A =78.5

You might be interested in
2,000 water bottles are being labeled and boxed. Each box holds 6 water bottles. How many bottles will be left over?
kap26 [50]
We just have to divide 2,000 by 6 
lets do the math:)
2,000 ÷ 6 = 333.333333333
So if we round this it becomes 2 
<span>So your answer is B.) 2 </span>
7 0
3 years ago
To make concrete, 2 parts cement is mixed with every 5 parts of sand. write down the ratio of cement to sand.
aliina [53]

The answer would be 2:5 because there is 2 parts of cement and 5 parts of sand and they want to know the ratio of cement to sand

A ratio is simply comparing something and it compared the cent to the sand which is 2:5 or you can right it as 2 to 5 or 2/5 as a fraction

7 0
3 years ago
A store bought a kitchen play set for $34.93 and sold it for $89.25. What was the markup percentage? Round your answer to the ne
Svetradugi [14.3K]

Answer:

155.5%

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Your next math test is worth 111 points and contains 32 problems. Each problem is worth either 4 points or 3 points. How many 3
Dafna11 [192]
We call x the 4 points-worth problems and y the 3 points-worth problems

You know that x+y = 32

4x+3y = 111

You know that the difference from the x and y is 32 so write:

x = 32-y

Substitute at x the value of 32-y

4(32-y)+3y = 111

128-4y +3y = 111

-4y+3y = 111-128

-y = -17

y = 17
3 0
3 years ago
Read 2 more answers
A k out of n system is one in which there is a group of n components, and the system will function if at least k of the componen
Solnce55 [7]

Answer:

0.9606 = 96.06% probability that the system will function tomorrow

Step-by-step explanation:

For each component, there are only two possible outcomes. Either it works, or it does not. Components are independent. This means that we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

Probability of a component working:

0.7 of 0.2(rain)

0.9 of 1 - 0.2 = 0.8(no rain). So

p = 0.7*0.2 + 0.9*0.8 = 0.86

0.86 - 86% probability that the system will function tomorrow

6 components:

This means that n = 6

What is the probability that the system will function tomorrow

This is

P(X \geq 4) = P(X = 4) + P(X = 5) + P(X = 6)

In which

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 4) = C_{6,4}.(0.86)^{4}.(0.14)^{2} = 0.1608

P(X = 5) = C_{6,5}.(0.86)^{5}.(0.14)^{1} = 0.3952

P(X = 6) = C_{6,6}.(0.86)^{6}.(0.14)^{0} = 0.4046

P(X \geq 4) = P(X = 4) + P(X = 5) + P(X = 6) = 0.1608 + 0.3952 + 0.4046 = 0.9606

0.9606 = 96.06% probability that the system will function tomorrow

6 0
3 years ago
Other questions:
  • What would this be please help
    5·2 answers
  • What is the solution set of 8x+5&lt;7x-1?
    7·1 answer
  • Newlyweds Bryce &amp; lauren need to rent a truck to move their belongings to their new apartment. They can rent a truck of the
    8·1 answer
  • -67 = 6x - 1
    14·1 answer
  • Michael is planting a garden in the shape of a right triangle. He wants 4 tickseed plants for each square meter of area. How man
    13·1 answer
  • What is the product <br><br> 3a(8a-6a)
    9·1 answer
  • Write an equation of the line in slope-intercept form. The line passing through (0, 1) and (-4, 5)
    15·1 answer
  • Cameron is creating a chart of numbers and their opposites
    6·1 answer
  • Evaluate the expression 120n + 160,500 when n= 32.<br> n=______
    9·1 answer
  • The Smiths purchased 6 containers of ice cream for a party.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!