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
pishuonlain [190]
3 years ago
8

Find the coordinates of the midpoint of VW with endpoint V(-2,-6) and W(x+2,y+3)

Mathematics
1 answer:
mariarad [96]3 years ago
7 0

\bf ~~~~~~~~~~~~\textit{middle point of 2 points } \\\\ V(\stackrel{x_1}{-2}~,~\stackrel{y_1}{-6})\qquad W(\stackrel{x_2}{x+2}~,~\stackrel{y_2}{y+3}) \qquad \left(\cfrac{ x_2 + x_1}{2}~~~ ,~~~ \cfrac{ y_2 + y_1}{2} \right) \\\\\\ \left(\cfrac{(x+2)-2}{2}~~,~~\cfrac{(y+3)-6}{2} \right)\implies \left( \cfrac{x}{2}~~,~~\cfrac{y-3}{2} \right)

You might be interested in
The ages of five friends are 20,31,28,31 and 25. How many of the friends are older than the average (arithmetic mean) age?
FromTheMoon [43]

Answer:

3 friends

Step-by-step explanation:

The mean age is 27 so 3 friends are above that age.

7 0
3 years ago
(3x – 70) (3y+40) 120 x
enyata [817]

Answer:

3x-70

Step-by-step explanation:

(3y+40 ) 120x is the answer of that question answer

4 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
Pls help im talkin 25 here
leva [86]

Answer: i do know girl

5 0
3 years ago
Find the solution of the system of equations.<br>6x + 8y = -8<br>x + 4y = 4<br>( , )​
ladessa [460]

Answer:

the solution is (-4, 2)

Step-by-step explanation:

6x + 8y = -8

x + 4y = 4

... can be solved using elimination by addition and subtraction, among other methods.  Multiply the second equation by -2 to obtain

6x + 8y = -8

-2x - 8y = -8

Combining these results in

4x = -16.  Thus, x = -4.

Substituting -4 for x in x + 4y = 4 results in

-4 + 4y = 4, or 4y = 8, or y = 2

Then the solution is (-4, 2)

8 0
3 years ago
Other questions:
  • Is this function linear or nonlinear?<br><br> y=2x^2−4
    6·2 answers
  • What do you know if x=0
    5·1 answer
  • Use Pythagorean theorem to find the missing side c=7, b=6a; find a and b
    9·1 answer
  • In six months, 33.6 gallons were used. Find the unit rate.
    10·1 answer
  • Hey computer is on sale for $1600 which is a 20% discount of the regular price what is the regular price
    7·1 answer
  • Need help with this math problem
    11·1 answer
  • Write 2 mixed numbers between 3 and 4 that have a product between 9 and 12
    11·1 answer
  • There are 25 employees in a office.22 have cell phones 19 have cars, and 2 have niether. How many employees have both.
    15·1 answer
  • Someone help<br> me plsss
    6·1 answer
  • Please answer so I dont fail this semester ​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!