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
Vlada [557]
3 years ago
9

3 boxes have a total weight of 70kg.

Mathematics
1 answer:
Crazy boy [7]3 years ago
3 0

Answer:

Box A = 37.3333333333

Box B = 23.33333333333

Box C = 9.33333333333

Step-by-step explanation:

You might be interested in
Each side of a square is x meters long. Each side of the square is increased by 10%.
postnew [5]
Increase by 10% is time 1.10

so

area=side^2
sidenew=1.1x
so


(1.1x)^2=44 is equation
6 0
3 years ago
Read 2 more answers
Pls help. I don't understand.
Nana76 [90]

Answer:

112

Step-by-step explanation:

I took the same test

7 0
2 years ago
Read 2 more answers
An automobile manufacturer finds that 1 in every 2500 automobiles produced has a particular manufacturing defect. ​(a) Use a bin
Advocard [28]

Answer:

a) 0.1558 = 15.58% probability of finding 4 cars with the defect in a random sample of 7000 cars.

b) 0.1557 = 15.57% probability of finding 4 cars with the defect in a random sample of 7000 cars. These probabilities are very close, which means that the approximation works.

Step-by-step explanation:

Binomial 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.

Poisson distribution:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

In which

x is the number of sucesses

e = 2.71828 is the Euler number

\mu is the mean in the given interval.

To use the Poisson approximation for the binomial, we have that:

\mu = np

1 in every 2500 automobiles produced has a particular manufacturing defect.

This means that p = \frac{1}{2500} = 0.0004

a) Use a binomial distribution to find the probability of finding 4 cars with the defect in a random sample of 7000 cars.

This is P(X = 4) when n = 7000. So

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

P(X = 4) = C_{7000,4}.(0.0004)^{4}.(0.9996)^{6996} = 0.1558

0.1558 = 15.58% probability of finding 4 cars with the defect in a random sample of 7000 cars.

(b) The Poisson distribution can be used to approximate the binomial distribution for large values of n and small values of p.

Using the approximation:

\mu = np = 7000*0.0004 = 2.8. So

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

P(X = 4) = \frac{e^{-2.8}*(2.8)^{4}}{(4)!} = 0.1557

0.1557 = 15.57% probability of finding 4 cars with the defect in a random sample of 7000 cars. These probabilities are very close, which means that the approximation works.

6 0
3 years ago
Find the area of the shaded region.
Maksim231197 [3]

Answer:

Step-by-step explanation:

First do 9 times 9 times 9

3 0
3 years ago
Read 2 more answers
A survey of 100 doctors revealed that 2 out of every 5 doctors recommended Brand M deodorant. Based on these results, how many d
AURORKA [14]

Answer:

Ok well it’s obviously not 140 Bc that’s more Doctors than they had to start and it isn’t 20, it’s not 40, so it’s 60.

Step-by-step explanation:

Also if you do 100/5 you get 20 and 5-2 is 3 so 20 times 3 is 60 so yeah

4 0
2 years ago
Other questions:
  • Simplify the expression |ab| if a<0 and b>0
    9·1 answer
  • 9% rounded to the nearest whole number
    7·2 answers
  • Marcy left for school and felt like running. She ran for a while and then stopped to rest. After resting, she walked the rest of
    15·1 answer
  • PLS HELP ME ASAP FOR 12 AND 14!! (MUST SHOW WORK!!) + LOTS OF POINTS!! *brainliest*
    15·2 answers
  • suppose 60% of kids who visit a doctor have a fever, and 20% of kids with a fever have sore throats. what's the probability that
    8·1 answer
  • -2(21/4)+-2(13/4) what is the answer
    8·2 answers
  • NEED ANSWER ASAP ! ! ! ! ! !
    14·2 answers
  • Jenny makes food for her hummingbird feeders
    11·1 answer
  • There were 28 dogs and cats at the pet store. If 75% were cats, how many cats were at the pet store?
    5·2 answers
  • Please help i will rate 5 stars
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!