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
Natasha_Volkova [10]
3 years ago
7

I dont know what to do.

Mathematics
1 answer:
Scorpion4ik [409]3 years ago
3 0
Slope=\frac{ y_{2}- y_{1}  }{ x_{2} - x_{1} }

(3,5) and (1,9)
x1=3
y1=5
x2=1
y2=9

Slope=\frac{ y_{2}- y_{1} }{ x_{2} - x_{1} }
Slope=\frac{ 9- 5 }{ 1 - 3}
Slope=\frac{4}{ -2}
Slope=-\frac{4}{2} or -2

Answer:Slope=-2
You might be interested in
Please solve for the maximum value <br><br> f(x) = -2x^2 - 12x - 16
Natasha2012 [34]

Answer:

-2(x+4)(x+2)

Step-by-step explanation:

thats the answerer

7 0
3 years ago
A high school mathematics teacher can grade a set of exams in 7 hours working alone. If their student teacher helps​ them, it wi
Stels [109]

It takes 9 hrs 19.8 minutes  for the student teacher to grade the exams if they worked​ alone

<u>Solution:</u>

Let the efficiency of the school teacher be “x” and the efficiency of the student teacher be “y”

Here the word efficiency means the rate of doing work

Let the total work to be completed be W

According to the question,

The time taken by the school teacher to complete the work is 7 hrs.

So we can write it in equation form

W = x \times 7  ---- eqn 1

where W is the total work and x is the efficiency

Similarly for student teacher and school teacher doing the work simultaneously, we can write the equation as

W =(x +y ) \times 4

Equating eqn 1 and 2

x \times 7=(x+y) \times 4

7x = 4x + 4y

3x = 4y

So in ratio x : y = 4 : 3

Now putting value of x = 4 in equation (1) we get total work to be 28

Now, <em>total time taken by the student teacher = total work ÷ efficiency of student teacher</em>

Hence, total time taken by the student teacher = 28 ÷ 3 = 9.33 hrs

= 9 hrs 19.8 minutes

Hence it takes 9 hrs 19.8 minutes  for the student teacher to grade the exams if they worked​ alone

4 0
3 years ago
The national debt of a county is the total amount of money the government of that country owes. Imagine everyone in the United S
ollegr [7]

Answer:

Each person have to pay $67,237

Step-by-step explanation:

Amount each person would pay = Total amount of debt/ Size of Population

= 22000000000000/327200000

= 67237. 164

Approximately $67,237

3 0
2 years ago
Susan received $27 for 6 hours of work. Ricky received $14.25 for 3 hours of work. Which statement is true about there hourly ra
8090 [49]

Answer: C. Rickys rate was 0.25 more per hour" .

Step-by-step explanation:

Susan received $27 for 6 hours of work. Susan's rate we hour will be:

= $27/6

= $4.5

Ricky received $14.25 for 3 hours of work. Ricky's rate will be:

= $14.25/3

= $4.75

From the option given, the correct option is C "Rickys rate was 0.25 more per hour" .

This is because $4.75 - $4.5 = $0.25

3 0
3 years ago
I need help on all of this cuz I don’t get it
OleMash [197]
I've got three photos for the answers but they don't include 31 or 32.

8 0
3 years ago
Other questions:
  • The width of a rectangle is two-thirds of its length, and its area is 216 square meters. What is the length? is it 27 or 12
    5·1 answer
  • A bridge in the shape of a parabolic arch is modelled by this function (see pic).
    15·1 answer
  • What number should be added to 77 to make the sum 0?
    9·2 answers
  • It takes Ms Eberline 3/4 of an hour to drive to the store and 2/3 of an hour to drive to her son’s school. If ms ember line driv
    14·2 answers
  • What is the GCF of 105,30 and 75 and How?
    14·2 answers
  • What 2 things put an expression in simplest form?
    15·1 answer
  • 1<br> Select all of the true statements about the two triangles shown below.
    12·1 answer
  • Estimate the following using general rule.
    15·1 answer
  • Please help me!!!!! AND DO NOT GIVE ME NO GOD DAM LINKS!!!!!!!!!!!! :)
    15·1 answer
  • The sum of two numbers is zero. One number is nine less than twice the other. Find the numbers
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!