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
Harrizon [31]
3 years ago
5

could someone out there perhaps help me? i’m so lost even though it’s probably so simple. i’ll give you brainleist :)

Mathematics
1 answer:
Temka [501]3 years ago
8 0

Answer:

y= -x+7, b= sqrt(2P/a), c=3P^2-b

Step-by-step explanation:

First, make a table regarding both of the equations. You will eventually find out that both lines intersect at the point (2, 5) after you find the points on the table. From there, subtract x from both sides in the equation x + y = 2. You will      get y = -x + 2. Since they said the line was parallel, find a line that has the slope of negative one. Since we know that this line intersects the point in which the first two lines intersect, we know that the y-intercept will be 7. The equation of the line would be y=-x+7.

Multiply both sides by 2. Then, divide both sides by a to get b^2=(2P/a). Take the square root to get the value of b, which is sqrt(2P/a).

Square both sides of the equation to get P^2=(b+c)/3. Cross multiply to get 3P^2=b+c. Subtract b from both sides to get c=3P^2-b.

You might be interested in
A linear model for the situation below passes through the origin. Find the missing value. Round to the nearest ten if necessary.
BARSIC [14]
17.55 to buy 13 apples
4 0
2 years ago
Read 2 more answers
How do you factor 7+14
mote1985 [20]

You could factor a 7 out of 7 + 14 to get 7(1 + 2).

This would equal the same thing as 7 + 14, which is 21.

7 * 3 = 21.

21 can be factored like so:

1 * 21 = 21

3 * 7 = 21


5 0
3 years ago
Kanji buys 3 yards of fabric for $7.47. Then he realizes that he needs 2 more yards Of the Same fabric. How much will the extra
emmainna [20.7K]
It will cost 4.98.
Explanation: If you divide 7.47 by 3, you get 2.49. One yard plus one yard equals two yards. Multiply 2.49 by 2 to get the answer.
6 0
3 years ago
What is the formula for a counterclockwise rotation of 180°?!?!
Sloan [31]

Answer: A (x,y) is your original. Your answer after would be A' (-x,-y) you would change the sign. If its negative it becomes positive, and if it'd positive it becomes negative.

7 0
3 years ago
Read 2 more answers
In a large population, 3% of the people are heroin users. A new drug test correctly identifies users 93% of the time and correct
kari74 [83]

Answer:

(a) The probability tree is shown below.

(b) The probability that a person who does not use heroin in this population tests positive is 0.10.

(c) The probability that a randomly chosen person from this population is a heroin user and tests positive is 0.0279.

(d) The probability that a randomly chosen person from this population tests positive is 0.1249.

(e) The probability that a person is heroin user given that he/she was tested positive is 0.2234.

Step-by-step explanation:

Denote the events as follows:

<em>X</em> = a person is a heroin user

<em>Y</em> = the test is correct.

Given:

P (X) = 0.03

P (Y|X) = 0.93

P (Y|X') = 0.99

(a)

The probability tree is shown below.

(b)

Compute the probability that a person who does not use heroin in this population tests positive as follows:

The event is denoted as (Y' | X').

Consider the tree diagram.

The value of P (Y' | X') is 0.10.

Thus, the probability that a person who does not use heroin in this population tests positive is 0.10.

(c)

Compute the probability that a randomly chosen person from this population is a heroin user and tests positive as follows:

P(X\cap Y)=P(Y|X)P(X)=0.93\times0.03=0.0279

Thus, the probability that a randomly chosen person from this population is a heroin user and tests positive is 0.0279.

(d)

Compute the probability that a randomly chosen person from this population tests positive as follows:

P (Positive) = P (Y|X)P(X) + P (Y'|X')P(X')

                  =(0.93\times0.03)+(0.10\times0.97)\\=0.1249

Thus, the probability that a randomly chosen person from this population tests positive is 0.1249.

(e)

Compute the probability that a person is heroin user given that he/she was tested positive as follows:

P(X|positive)=\frac{P(Y|X)P(X)}{P(positive)} =\frac{0.93\times0.03}{0.1249}= 0.2234

Thus, the probability that a person is heroin user given that he/she was tested positive is 0.2234.

6 0
3 years ago
Other questions:
  • Write the number 3.8 in the forum of a/b using integers to show that it is a rational number
    6·2 answers
  • Jose can read 7 pages of his book in5 minutes. at this rate, how long will it take him to read the entire 175-page book?
    15·1 answer
  • Convert the following decimals to fractions. Simplify all fractions so they are relatively prime.
    7·2 answers
  • a big cruise ship dropped anchor off the Caribbean island of antigua. the heavy anchor dropped into the water at a rate of 2.5 m
    8·1 answer
  • FUTA tax is paid A. only weekly. B. by an employee. C. by the employer. D. by both the employee and the employer.
    9·2 answers
  • In 2011, a firm books the following:  increase in cash, $0; increase in inventories $13; increase in accounts receivable, $29; i
    15·1 answer
  • Find the slope of the line​
    15·2 answers
  • Simplify the following expression:<br> 5(2x-4)-4(2-5x)
    5·1 answer
  • Prove the following identi<br> v 1-cos2A/sin2A=tanA
    15·1 answer
  • I need help with this other one oof lol
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!