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
Step2247 [10]
3 years ago
15

the ratio of yellow balloons to red balloons is 2;1 respectively.if there are 7 red balloons how many yellow balloons are there

Mathematics
2 answers:
ira [324]3 years ago
7 0
There are 7 read balloons and 14 yellow balloons
andreev551 [17]3 years ago
5 0

Answer:

There are 14 Yellow Balloons.

You might be interested in
Which two triangles are congruent? Complete the congruence statement. ​
andre [41]

answer:

△JKI ≅ △CED

step-by-step explanation:

  • like i mentioned before, they look similar and fulfill the SSS triangle theorem (this time's the theorem is different only)
4 0
3 years ago
Write –0.825 as a fraction.
olga2289 [7]

Answer:

OK 825/1000 That is the answer.

8 0
3 years ago
A moving truck states that it holds 300 cubic ft of boxes. The truck is 25 ft in length and 8 ft in height. What is the width of
Kay [80]

Answer: 100

Step-by-step explanation: 300-(25x8)=

                                             300-200= 100

                                                     

5 0
3 years ago
If I have $100 dollars and spend $99.99 dollars, how much money do I have left?
Brrunno [24]

Answer:

You have $00.01

Step-by-step explanation:

100-99.99=0.01

5 0
3 years ago
Read 2 more answers
Let x be a binomial random variable with n = 15 and p= .5. Using the exact
alexandr1967 [171]

Answer: Choice C) 0.6964;  0.6972

============================================

Work Shown:

n = 15

p = 0.5

q = 1-p = 1-0.5 = 0.5

P(k) = (n C k)*(p)^k*(q)^(n-k)

P(k) = (15 C k)*(0.5)^k*(0.5)^(15-k)

----------------

If you plug in k = 7, then we get,

P(k) = (15 C k)*(0.5)^k*(0.5)^(15-k)

P(7) = (15 C 7)*(0.5)^7*(0.5)^(15-7)

P(7) = 6435*(0.5)^7*(0.5)^8

P(7) = 0.1964

-----------------

Repeat for k = 8 all the way through k = 15. You could do this by hand, but I recommend using a spreadsheet to make things go much quicker.

Once you determine those values, add them up and you should get 0.6964 which is the binomial probability we want.

------------------

As for the normal approximation, you'll need to compute the mu and sigma to get

  • mu = n*p = 15*0.5 = 7.5
  • sigma = sqrt(n*p*q) = sqrt(15*0.5*0.5) = 1.93649 which is approximate.

The normal distribution will have those parameters.

Since we're using a continuity correction, we need to bump the x = 6 up to x = 6.5, since we want to be larger than 6

Let's find the z score

z = (x - mu)/sigma

z = (6.5 - 7.5)/(1.93649)

z = -0.516398

Now use a Z table or a calculator to determine that P(Z > -0.516398) = 0.6972 approximately. If you're using a TI calculator, then you'll use the normalCDF function. If you're using excel, then you would use the NormDist function (make sure to turn the cumulative flag to "true"). Alternatively, you can search out free z calculators to get the job done.

7 0
3 years ago
Other questions:
  • Based on the following graph, what is the most enjoyed candy and what is the approximate level of enjoyment?
    11·2 answers
  • Sue has 2 cats
    5·1 answer
  • Croints
    7·1 answer
  • What fraction is equal to 5/8
    7·2 answers
  • What is the arc length when θ = 3 pi over 5 and the radius is 7 cm? (5 points)
    13·1 answer
  • 20 points and brainliest answer for correct answer. Photo above. Due by 9:45 today! Hi
    5·1 answer
  • Which set of sides would make a right angle
    9·1 answer
  • When three times a number is subtracted from 20, the result is 4 plus the number. What is the number? equation. 20 - 3n= 4 +n (T
    5·1 answer
  • The slope of a given line is shown below. Find the slope of a line parallel to the given line and the slope of a line perpendicu
    14·1 answer
  • The necklace charm below consists of two triangles with the same dimensions. Which equation represents the area of the necklace
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!