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
Tanzania [10]
2 years ago
14

What is the equations of the line passing through points (-3,7) and (9,-1)?

Mathematics
1 answer:
diamong [38]2 years ago
8 0

Answer:


y = -2/3x + 5 or A.

You might be interested in
A local little league has a total of 90 players of whom 20% are left-handed. How many left-handed players are there? Please help
german
18

First you want to change the 20% into a decimal which is .20
Next you want to multiply 90 by .20 because that will give you the answer for 20% of 90
90x.20=18

Hope that helps
7 0
3 years ago
Alvin is 15 years younger than Elga. The sum of their ages is 25. What is Elga’s age
Fynjy0 [20]
Elga is 20 years old and Alvin would be 5. Hope this helped.
4 0
3 years ago
An arts academy requires there to be 4 teachers for every 84 students and 3 tutors for every 30 students. How many students does
Sonja [21]

Answer:

21 students per teacher

10 students per tutor

10 tutors needed for 110 students

Step-by-step explanation:

84 ÷4=21

30÷3=10

110÷10=10

6 0
3 years ago
Is y = 5x − 3 a linear function? If so, graph the function.
labwork [276]
It is
If you have a slope (which is before the x) then it’s a linear equation

7 0
3 years ago
10 black balls and 5 white balls are placed in an urn. Two balls are then drawn in succession. What is the probability that the
Alex787 [66]

Answer:

The probability that the second ball drawn is a white ball if the second ball is drawn without replacing the first ball is \frac{1}{3} or 0.3333

Step-by-step explanation:

Probability is the greater or lesser possibility that a certain event will occur. In other words, the probability establishes a relationship between the number of favorable events and the total number of possible events. Then, the probability of any event A is defined as the ratio between the number of favorable cases (number of cases in which event A may or may not occur) and the total number of possible cases. This is called Laplace's Law:

P(A)\frac{number of favorable cases of A}{total number of possible cases}

Each of the results obtained when conducting an experiment is called an elementary event. The set of all elementary events obtained is called the sample space, so that every subset of the sample space is an event.

The total number of possible cases is 15 (10 black balls added to the 5 white balls).

As each extraction is without replacement, the events are dependent. For that, the dependent probabilities are defined first

Two events are dependent on each other when the fact that one of them is verified influences the probability of the other being verified.  In other words, the probability of A happening is affected because B has happened or not.

The probability of two events A and B of two successive simple experiments in a dependent compound experiment is:

A and B are dependent ⇔ P (A ∩ B) = P (A) · P (B / A)

                                              P (A ∩ B) = P (B) · P (B / A)

As the color of the first ball that is extracted is unknown, there are two cases: that the ball is black or that the ball is white.

<em> It will be assumed first that the first ball drawn is black</em>. Then the probability of this happening is \frac{10}{15} since the number of black balls in the urn is 10 and the total number of cases is 15. It is now known that the second ball extracted will be white. Then the number of favorable cases will be 5 (number of white balls inside the ballot urn), but now the number of total cases is 14, because a ball was previously removed that was not replaced.  So the probability of this happening is \frac{5}{14}

So the probability that the first ball is black and the second white is:

<em>\frac{10}{15} *\frac{5}{14} =\frac{5}{21}</em>

<em>It will now be assumed first that the first ball that is drawn is white.</em> Then the probability of this happening is \frac{5}{15} since the number of white balls in the urn is 5 and the total number of cases is 15. And it is known that the second ball drawn will be white. Then, the number of favorable cases will be 4 (number of white balls inside the urn, because when removing a white ball and not replacing it, its quantity will decrease), and the total number of cases is 14, same as in the previous case  So, the probability of this happening is  \frac{4}{14}

So the probability that the first ball is white and the second white is:

<em>\frac{5}{15} *\frac{4}{14} =\frac{2}{21}</em>

If A and B are two incompatible events, that is, they cannot occur at the same time, the probability of occurrence A or of occurrence B will be the sum of the probabilities of each event occurring separately.

These are events are incompatible, since I cannot, in a first extraction, extract a black and white ball at the same time. So:

<em>\frac{5}{21} +\frac{2}{21} =\frac{7}{21}=\frac{1}{3} =0.3333</em>

Finally, <u><em>the probability that the second ball drawn is a white ball if the second ball is drawn without replacing the first ball is \frac{1}{3} or 0.3333</em></u>

3 0
3 years ago
Other questions:
  • Ginger is selling gym memberships. The first week she sold 5 memberships and each week for the next four weeks she sells 3 more
    9·1 answer
  • HELP ASAP PLEASE I WILL GIVE YOU THE POINTS !!
    10·1 answer
  • How do the graphs of f(x)=x^3 and g(x)=(1/3x)^3 relate?
    12·2 answers
  • Is 25 greater or less than -4(-4)?
    15·1 answer
  • What is true about 3 times 9 ? 1) it’ is 3times smaller than 9 2) it is 3 less than 9 3) it is 3times as much as 9 4) it is 3 mo
    12·2 answers
  • What is the value of the expression?<br><br> ​−4.2(−2.8+4.5)​
    8·2 answers
  • one light flashes every 2 minutes and another flashes every 7 minutes. If both lights flash together at 1pm, what is the first t
    12·1 answer
  • The area of a square garden is 1/81 km2. How long is each side?
    8·1 answer
  • Plz help me on this test
    10·1 answer
  • What is the equation for <br> 4,2 and 9,12
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!