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
borishaifa [10]
2 years ago
7

PLEASE HELP!!!!!! 20 POINTS!!!!!

Mathematics
1 answer:
Advocard [28]2 years ago
5 0

Answer:

-18.703

Step-by-step explanation:

a₁=-28(-1/2)¹⁻¹

r=-1/2

a₁=-28

r=-1/2

S₉=a₁\frac{1-r^{9} }{1-r}

S₉=-28\frac{1-(\frac{1}{2})^{9}  }{1-(\frac{1}{2}) }

S₉=-\frac{1197}{64}

S₉=-18\frac{45}{64}   S₉=-18.703125

You might be interested in
Two pound bags of candy are being used to fill containers that hold 1 1/2 pounds each. How many containers can be filled by each
melamori03 [73]

Answer:

4 Containers Can Be Filled By Each Two Pound Bag Of Candy .

Step-by-step explanation:

GIven   Two Pound Bag Of Candy Used To Fill Container That hold 1\frac{1}{2} Pound Each .

Now There are 4 Container of Capacity 1\frac{1}{2}  Pound Needed To fill Exactly 3 two Pound Bags .

Thus 4 container have Total capacity Of 6 Pound . Which Is Easily Filled By The 3 two Pound Bags . ( Without Any Loss )

3 0
2 years ago
What’s 1746 to the nearest ten
blsea [12.9K]
1750 should be your answer.

   1746 rounded to the nearest ten is 1750.
7 0
3 years ago
Read 2 more answers
When grading an exam, 90% of a professor's 50 students passed. If the professor randomly selected 10 exams, what is the probabil
Damm [24]

Using the binomial distribution, it is found that there is a:

a) 0.9298 = 92.98% probability that at least 8 of them passed.

b) 0.0001 = 0.01% probability that fewer than 5 passed.

For each student, there are only two possible outcomes, either they passed, or they did not pass. The probability of a student passing is independent of any other student, hence, the binomial distribution is used to solve this question.

<h3>What is the binomial probability distribution formula?</h3>

The formula is:

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

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

The parameters are:

  • x is the number of successes.
  • n is the number of trials.
  • p is the probability of a success on a single trial.

In this problem:

  • 90% of the students passed, hence p = 0.9.
  • The professor randomly selected 10 exams, hence n = 10.

Item a:

The probability is:

P(X \geq 8) = P(X = 8) + P(X = 9) + P(X = 10)

In which:

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

P(X = 8) = C_{10,8}.(0.9)^{8}.(0.1)^{2} = 0.1937

P(X = 9) = C_{10,9}.(0.9)^{9}.(0.1)^{1} = 0.3874

P(X = 10) = C_{10,10}.(0.9)^{10}.(0.1)^{0} = 0.3487

Then:

P(X \geq 8) = P(X = 8) + P(X = 9) + P(X = 10) = 0.1937 + 0.3874 + 0.3487 = 0.9298

0.9298 = 92.98% probability that at least 8 of them passed.

Item b:

The probability is:

P(X < 5) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4)

Using the binomial formula, as in item a, to find each probability, then adding them, it is found that:

P(X < 5) = 0.0001

Hence:

0.0001 = 0.01% probability that fewer than 5 passed.

You can learn more about the the binomial distribution at brainly.com/question/24863377

3 0
2 years ago
1/3 off the regular price of $51
jolli1 [7]

Answer:

34.00

Step-by-step explanation:

because get the discounted price, subtract the discount from the original price. To illustrate this principle, here is an example: to take 1/3 off $36.00, divide 36 by 3 and multiply by 1. This becomes 36/3 x 1 to equal 12, which represents a discount of $12.00

8 0
1 year ago
Please help me!! thank youu!!!
beks73 [17]

Answer:

24

Step-by-step explanation:

Area of a triangle

A = 1/2 bh

b=12

h=4

A= 1/2 * 12 * 4

A = 24

7 0
2 years ago
Other questions:
  • Average of 34 and 68 ?
    7·2 answers
  • Convert the equation to slope- intercept and standard form.<br> y-4=5 + 1/2x
    14·1 answer
  • What is the solution to the equation -2(1+5a)=-6(a+3) ?
    9·1 answer
  • It cost $3.99 for 25 fl. oz. of detergent or $6.99 for 90 fl. oz. Which is a better buy?
    6·2 answers
  • The integer 4 is considered all of the following except _____.
    11·1 answer
  • Simplify using order of operations.Show all your work. 4^3 + (`10-8) divided by 2
    14·1 answer
  • Hellllppppp!!!! Pleaseeeee
    12·1 answer
  • Find the perimeter and area of the figure.
    14·1 answer
  • Solve 4√2 + 5√4 and explain if the answer is rational or irrational
    11·1 answer
  • (Ill give brainliest)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!