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
ankoles [38]
3 years ago
12

I’m slow help me please

Mathematics
1 answer:
Vlada [557]3 years ago
8 0
10 will be your answer because 4 x 5 divided by 2 is 10
You might be interested in
About 21 out of 25 Texans live in An urban area
Hoochie [10]

Answer:

I'm confused. Is there more to the question?

8 0
3 years ago
Solve for x. 2x+5+6x-1=120​
svetlana [45]

Answer:

x=14.5

Step-by-step explanation:

2x+5+6x-1=120​

Combine like terms (combine all of the variables and then combine all of the constants)

8x+4=120

subtract 4 on both sides

8x=116

Divide 8

x=14.5

Hope this helps!

8 0
3 years ago
What is the surface area of this prism? A. 3240 m2 B. 6480 m2 C. 1656 m2 D. 3312 m2
NeX [460]
Well take the bottom and in this case its 18 and 30 so 18 x 30 = 540 then you do the two 15's times 30 and thats 450 times the  2 is 900 so 540+900+216 = so thats 1656 m 2 :)))))))))))
6 0
3 years ago
Read 2 more answers
You are to take a multiple-choice exam consisting of 64 questions with 5 possible responses to each question. Suppose that you h
damaskus [11]

Answer:

a) Expected score on the exam is 12.8.

b) Variance 10.24, Standard deviation 3.2

Step-by-step explanation:

For each question, there are only two possible outcomes. Either you guesses the answer correctly, or you does not. The probability of guessing the answer of a question correctly is independent of other questions. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The expected value of the binomial distribution is:

E(X) = np

The variance of the binomial distribution is:

V(X) = np(1-p)

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

64 questions.

So n = 64

5 possible answers, one correctly, chosen at random:

So p = \frac{1}{5} = 0.2

(a) What is your expected score on the exam?

E(X) = np = 64*0.2 = 12.8

(b) Compute the variance and standard deviation of x. Variance =Standard deviation

V(X) = np(1-p) = 64*0.2*0.8 = 10.24

Variance 10.24

\sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{64*0.2*0.8} = 3.2

Standard deviation 3.2

5 0
3 years ago
In trip 1 you drove 104 miles in 4 gallons; in trip 2 you drove 78 miles how many gallons did you use in trip 2
BlackZzzverrR [31]
First do 104/4 which equals which equals 26
so you can drive 26miles on one gallon

then do 78/26 which equals 3

so you used 3 gallons of gas on trip 2
4 0
3 years ago
Read 2 more answers
Other questions:
  • At a local pet store, Shirley noticed that about four out of five customers who bought pets chose goldfish. Shirley wants to kno
    5·1 answer
  • The applicants for a soccer coaching position were asked how many years of
    8·1 answer
  • George has opened a new store and he is monitoring its success closely.
    13·1 answer
  • if a cone and a cylinder have the same radius and the perpendicular height of the cone is twice that of a cylinder find the rati
    15·2 answers
  • Need help with this pls!!<br> (Show work pls)
    7·1 answer
  • Simplify 6x−8y−5x+3y
    15·2 answers
  • The dimensions of the fountain cup are as follows:
    12·1 answer
  • What is the pair of vertical angles.
    13·2 answers
  • 1. Find the volume of a cube with a side of 9 cm.
    7·1 answer
  • A product is made up of three parts A B and C .The manufacturing in process is such that the probability of A being defective is
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!