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
leonid [27]
3 years ago
15

Bryan started to evaluate a decimal expression. 2.5(42 ÷ 3.2 – 10(0.2) + 3)– 5.2 2.5(16 ÷ 3.2 – 10(0.2) + 3) – 5.2

Mathematics
1 answer:
Dmitry [639]3 years ago
5 0
The first answer is 30.1125 and second is 9.8
You might be interested in
What's the answer for 24
scZoUnD [109]
X= -2 or X= 3 either one works.
3 0
3 years ago
24. Which measurement is equivalent to 10 g?<br> a. 1 dag<br> b. 1 dg<br> c. 1 cg<br> d. 1 hg
Liono4ka [1.6K]

Answer:

  a.  1 dag

Step-by-step explanation:

The list of SI prefixes is attached. Each has an abbreviation that can be used with the abbreviation for the SI unit of interest.

<h3>Application</h3>

A factor of 10 is signified by the prefix deka-, abbreviated "da". Then 10 grams is 1 dekagram, or 1 dag.

7 0
2 years ago
Andi purchased 1/3 pound of cashews for $2.85.What is the cost of 1 pound of cashews.
Minchanka [31]
1/3 lb. = $2.85
1/3 lb = $2.85
1/3 lb. = $2.85

1 lb of cashews costs $ 8.55
6 0
3 years ago
The probability that a grader will make a marking error on any particular question of a multiple-choice exam is 0.15. If there a
sashaice [31]

Answer:

P(X=0)=(10C10)(0.15)^{0} (1-0.15)^{10-0}=0.1969

P(X \geq 1)= 1-P(X

P(X=0)=(nCn)(p)^{0} (1-p)^{n-0}=(1-p)^n

P(X \geq 1)= 1-P(X

Step-by-step explanation:

Previous concepts

A Bernoulli trial is "a random experiment with exactly two possible outcomes, "success" and "failure", in which the probability of success is the same every time the experiment is conducted". And this experiment is a particular case of the binomial experiment.

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".

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 complement rule is a theorem that provides a connection between the probability of an event and the probability of the complement of the event. Lat A the event of interest and A' the complement. The rule is defined by: P(A)+P(A') =1

Solution to the problem

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

X \sim Binom(n=10, p=0.15)

what is the probability that no errors are made?

For this case means that all the questions were correct so we want this probability:

P(X=0)=(10C10)(0.15)^{0} (1-0.15)^{10-0}=0.1969

what is the probability that at least one error made?

For this case we want this probability:

P(X \geq 1)

And we can use the complement rule:

P(X \geq 1)= 1-P(X

If there are n questions and the probability of a marking error is p rather than 0.15, give expressions for the probabilities of no errors  and at least one error

P(X=0)=(nCn)(p)^{0} (1-p)^{n-0}=(1-p)^n

P(X \geq 1)= 1-P(X

8 0
3 years ago
Help me solve this algebra 1 question please
s344n2d4d5 [400]
You should know that simply your answer
3 0
3 years ago
Other questions:
  • What is 29.8 divided by 3
    7·2 answers
  • Four friends have dinner and bill comes to 85.78. They leave an 18 percent tip. What is the total amount of their bill.
    15·2 answers
  • Consider the numbers √27 and √39.
    8·1 answer
  • Cos²x - 2 sin²x = -2 .Help me to solve it ​
    11·1 answer
  • Daniel and Morgan both live 129 miles away from the beach. It took Daniel 189 minutes less than two times the time it took Morga
    5·1 answer
  • The topping are nuts hot fudge caramel and sprinkles
    14·1 answer
  • What would the answers be for 2. And 3.?
    9·2 answers
  • - 2/5(20x -15) can you plz help me
    11·2 answers
  • You ask only the members of your family that you can contact by phone what their favorite holiday is. Is this a census?
    5·1 answer
  • PLEASE HELP ILL MARK BRAINLIEST
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!