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
Lubov Fominskaja [6]
3 years ago
13

Please help 25 points!

Mathematics
2 answers:
max2010maxim [7]3 years ago
8 0
The answer is D, the last option! Hope this helps.
tatuchka [14]3 years ago
7 0

The answer is 2268pi ft^3

You might be interested in
Let x denote the lifetime of a mcchine component with an exponential distribution. The mean time for the component failure is 25
aliina [53]

Answer:

0.1353 = 13.53% probability that the lifetime exceeds the mean time by more than 1 standard deviations

Step-by-step explanation:

Exponential distribution:

The exponential probability distribution, with mean m, is described by the following equation:

f(x) = \mu e^{-\mu x}

In which \mu = \frac{1}{m} is the decay parameter.

The probability that x is lower or equal to a is given by:

P(X \leq x) = \int\limits^a_0 {f(x)} \, dx

Which has the following solution:

P(X \leq x) = 1 - e^{-\mu x}

The probability of finding a value higher than x is:

P(X > x) = 1 - P(X \leq x) = 1 - (1 - e^{-\mu x}) = e^{-\mu x}

The mean time for the component failure is 2500 hours.

This means that m = \frac{2500}, \mu = \frac{1}{2500} = 0.0004

What is the probability that the lifetime exceeds the mean time by more than 1 standard deviations?

The standard deviation of the exponential distribution is the same as the mean, so this is P(X > 5000).

P(X > x) = e^{-0.0004*5000} = 0.1353

0.1353 = 13.53% probability that the lifetime exceeds the mean time by more than 1 standard deviations

4 0
2 years ago
The prices of consumer goods do not always exactly follow the CPI. The following chart shows several consumer items, along with
zloy xaker [14]

The reasonable estimate of the current customer price index is 195. The option B is the correct option.

<h3>Customer price index</h3>

Customer price index is the price index which measures the weight average of price of basket of customers goods or services.

It can be given as,

\rm CPI_t=\dfrac{C_t}{C_0}\times 100

Here \rm C_t is the cost of market basket in current period and \rm C_0 is the cost of market basket in the base period.

Cost of market basket in current period is

\rm C_t=15.66+119.75+23.99+37.50\\\\C_t=196.9

Cost of market basket in 1983 is,

\rm C_0=8.85+71.25+13.95+22.7\\\\C_0=116.8

Substitute all the values in the formula

\rm CPI_t=\dfrac{C_t}{C_0}\times 100\\\\\rm CPI_t=\dfrac{196.9}{116.8}\times 100\\\\\rm CPI_t=1.685\times 100 \\\\ CPI_t=168.5\\\\\rm CPI_t= 170 \ \rm approx

Thus the value of current CPI is 168.5 which is near about the 170.

Hence, the reasonable estimate of the current customer price index is 195. The option B is the correct option.

Learn more about the customer price index here;

brainly.com/question/25495502

3 0
2 years ago
Answer These Math Questions.
larisa86 [58]
1.

558 can be rounded to 600.

44 can be rounded to 40.

600 x 40 = 24,000



2.

9 x 802 = 9 (800 +2) =7200 + 18 = 7218



3.

3699 x 7 = (3700-1) x 7 = 25,900 - 7 = 25,893



4.

34 x 93 = 34 x (100-7) = 3400 - 238 = 3162



5.

678 x 87 = 58,986
5 0
3 years ago
ANYONE PLEASE HELP ME WITH MY MATH HOMEWORK I REALLY NEED THE ANSWER RIGHT NOW BECAUSE I HAVE TO PASS THIS LATER I DON’T HAVE MU
devlian [24]

Answer:

19.) \frac{y^3}{2x^{2} }

20.) \frac{3s}{7t^3}

21.) 23a^9b^8

22.) 34x^8y^{14}

Step-by-step explanation:

Glad to help

--Chris Jackson [High School Junior: Calculus Senior Honor Student]

5 0
2 years ago
Factor the expression 10y+6​
Sphinxa [80]

Answer:

2(5y+3)

Step-by-step explanation:

10y+6​

Factor out 2

2*5y + 2*3

2(5y+3)

7 0
3 years ago
Read 2 more answers
Other questions:
  • Eight x square minus x square
    10·1 answer
  • The number of streetlights in a town is growing linearly. Four months ago (n = 0) there were 130 lights. Now (n = 4) there are 1
    6·2 answers
  • L (-1,-1)
    11·2 answers
  • Seven less than the product of a number z and 3 is equal to 4
    7·1 answer
  • You downloaded a video game to your computer. You have a 60-minute free trial of the game. It takes 5 1/6 minutes to set up the
    7·1 answer
  • No explanation needed.
    7·2 answers
  • What is the equation of a line with a slope of -4 and a point (-2, 5) on the line?
    12·1 answer
  • What is the area of a triangle with a base of 7 cm and a height of 4cm
    8·1 answer
  • ((Picture) CONVERGENT AND DIVERGENT SERIES PLEASE HELP!!
    14·1 answer
  • How to find the all 4 angles of a trapezoid given only the side lengths
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!