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
dusya [7]
2 years ago
9

Math g8 - giving brainly if correct. show work.​

Mathematics
2 answers:
d1i1m1o1n [39]2 years ago
8 0

Answer:

25 m of ribbon

Step-by-step explanation:

12 / 0.48 = 25

Nady [450]2 years ago
4 0

Answer: $5.76

Step-by-step explanation:

1.44/3=$0.48 per ribbon

$0.48x12=5.76

You might be interested in
For which of the following counts would a binomial probability model be reasonable? a. The number of traffic tickets written by
timama [110]

Answer:

c. The number of 7's in a randomly selected set of five random digits from a table of random digits.

True, for this case we have a value fixed for n =5 and the probability is defined for each number 1/10 assuming numbers (0,1,2,3,4,5,6,7,8,9) so then the random variable "The number of 7's in a randomly selected set of five random digits" can be modelled with the binomial probability function.

Step-by-step explanation:

Previous concepts

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

Solution to the problem

Let X the random variable of interest, on this case we now that:

X \sim Binom(n, p)

The probability mass function for the Binomial distribution is given as:

P(X)=(nCx)(p)^x (1-p)^{n-x}

Where (nCx) means combinatory and it's given by this formula:

nCx=\frac{n!}{(n-x)! x!}

The conditions to apply this distribution is that we have the parameters fixed n and p.

Let's analyze one by one the possible solutions:

a. The number of traffic tickets written by each police officer in a large city during one month.

False, the number of traffic tickets written by each police is not a fixed amount always, so then the value of n change and we can't apply a binomial model for this case.

b. The number of hearts in a hand of five cards dealt from a standard deck of 52 cards that has been thoroughly shuffled.

False, not all the hands of size 5 are equal and since we can't ensure this condition then the binomial model not apply for this case

c. The number of 7's in a randomly selected set of five random digits from a table of random digits.

True, for this case we have a value fixed for n =5 and the probability is defined for each number 1/10 so then the random variable "The number of 7's in a randomly selected set of five random digits" can be modelled with the binomial probability function.

d. The number of phone calls received in a one-hour period.

False, the number of phone calls change by the hour and is not always fixed so then we don't have a valu for n, and the binomial model not applies for this case.

e. All of the above.

False option C is correct.

5 0
3 years ago
The area of a square is 144 square meters. what is the length in meters of one side of the square?​
slega [8]
Well i know that 12x12=144 so it is 12!
3 0
3 years ago
Read 2 more answers
Fill in the blanks to make true number sentences.<br><br> 1 3/5 = __ : __
arsen [322]

Answer:

1 6/10

Step-by-step explanation:

you should first turn this fraction into a improper fraction

1 3/5= 8/5

now you multiply the denominator and the numerator by the same number, in this case i am using 2

8/5 times 2/2= 16/10 or 1 6/10  

6 0
3 years ago
Find the average value of the function f(x, y, z) = 5x2z 5y2z over the region enclosed by the paraboloid z = 9 − x2 − y2 and the
Katyanochek1 [597]
The paraboloid meets the x-y plane when x²+y²=9. A circle of radius 3, centre origin. 

<span>Use cylindrical coordinates (r,θ,z) so paraboloid becomes z = 9−r² and f = 5r²z. </span>

<span>If F is the mean of f over the region R then F ∫ (R)dV = ∫ (R)fdV </span>

<span>∫ (R)dV = ∫∫∫ [θ=0,2π, r=0,3, z=0,9−r²] rdrdθdz </span>

<span>= ∫∫ [θ=0,2π, r=0,3] r(9−r²)drdθ = ∫ [θ=0,2π] { (9/2)3² − (1/4)3⁴} dθ = 81π/2 </span>


<span>∫ (R)fdV = ∫∫∫ [θ=0,2π, r=0,3, z=0,9−r²] 5r²z.rdrdθdz </span>

<span>= 5∫∫ [θ=0,2π, r=0,3] ½r³{ (9−r²)² − 0 } drdθ </span>

<span>= (5/2)∫∫ [θ=0,2π, r=0,3] { 81r³ − 18r⁵ + r⁷} drdθ </span>

<span>= (5/2)∫ [θ=0,2π] { (81/4)3⁴− (3)3⁶+ (1/8)3⁸} dθ = 10935π/8 </span>

<span>∴ F = 10935π/8 ÷ 81π/2 = 135/4</span>
4 0
3 years ago
What is the area of the following trapezoid?
KIM [24]
......................................3 yards?

8 0
3 years ago
Read 2 more answers
Other questions:
  • 1/2 9/10 4/5 which on e go first to put in lowest number on the left
    5·2 answers
  • Däne has a stamp collection. in one boo he has 6 pages with 15 stamps on each page. in another book,he has 9 pages with 20 stamp
    8·1 answer
  • What is 9 1/2 plus 2/3
    6·2 answers
  • Getting ready for the FSA math test is hard
    8·2 answers
  • Add parentheses to make the equation true: 6 times 8 - 4 = 24
    14·2 answers
  • What is the equation for the line?
    10·2 answers
  • Brian is purchasing a $60 sweater at 25% off. There is an additional
    7·2 answers
  • PLEASE HELP ASAP!!!WILL GIVE BRAINLEAST
    14·1 answer
  • If the 45 animals on the farm have a total of 150 legs, how many cows does farmer Ken have?
    5·1 answer
  • BRAINIEST IF CORRECT
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!