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
kari74 [83]
3 years ago
14

Find c such that (−3,−8), (−7,−6), and (c,4) lie on a line.

Mathematics
1 answer:
Nutka1998 [239]3 years ago
8 0
If the 3 points are collinear, then the slopes of all line segments connecting the points are the same.

Thus, 

         -6 - (-8)         2
m = ------------- = -------- = -1/2
         -7 - (-3)         -4

Then the following must be true:

             4-(-6)          10
-1/2 = ------------ = ---------
             c - (-7)       c + 7

Cross multiplying, -(c+7) = 20, and c+7 = -20, so that c = -27
You might be interested in
Find the following function of B
levacccp [35]
G(x) = 2x + 1
f(x) = x + 2

B wants you to find g of f of x, or, in other words, g(f(x)).

g(x + 2) = 2(x + 2) + 1
g(x + 2) = 2x + 4 + 1
g(f(x)) = 2x + 5
4 0
3 years ago
What is a common dominator for 5/6+1/6
german

Answer:

6

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
35 less than seven times a certain number is fifty-three more than 3 times that number. What is the number?
Dovator [93]

Answer:

70

Step-by-step explanation:

6 0
3 years ago
A restaurant offers three sizes of coffee and four differerſt types of coffee.
Kruka [31]
<h3>Answer:  864</h3>

=======================================================

Work Shown:

There are,

  • 3 sizes of coffee
  • 4 types of coffee
  • 2 choices for cream (you pick it or you leave it out)
  • 2 choices for sugar (same idea as the cream)

This means there are 3*4*2*2 = 12*4 = 48 different coffees. We'll use this value later, so let A = 48.

There are 6 bagel options. Also, there are 3 choices in terms of if you order the bagel plain, with butter, or with cream cheese. This leads to 6*3 = 18 different ways to order a bagel. Let B = 18.

Multiply the values of A and B to get the final answer

A*B = 48*18 = 864

There are 864 ways to order a coffee and bagel at this restaurant.

--------------

If you're curious why you multiply the values out, consider this smaller example.

Let's say you had 3 choices of coffee and 2 choices for a bagel. Form a table with 3 rows and 2 columns. Place the different coffee choices along the left to form each row. Along the top, we'll have the two different bagel choices (one for each column).

This 3 by 2 table leads to 3*2 = 6 individual table cells inside. Each cell in the table represents a coffee+bagel combo. This idea is applied to the section above, but we have a lot more options.

3 0
2 years ago
What is the equation of the line that passes through (-3, -1) and has a slope of 2/5? Put your answer in slope-intercept form.
Zanzabum
Hi there!

The general formula of A line in slope-intercept form is the following:
y = mx + n

In this formula m represents the slope of the line. Therefore, we can conclude that m = 2/5.
y =  \frac{2}{5} x + n

We also know that the line passes through the point (-3, -1) and we can therefore substitute this coordinate into the formula of the line.
x = -3 and y = -1

- 1 =  \frac{2}{5}  \times  - 3 + n

Multiply first.
- 1 =  -  1\frac{1}{5}  + n

And finally add 1 1/5 to both sides of the equation.
\frac{1}{5}  = n

We can now switch sides.
n =  \frac{1}{5}

Now we've found our value of n, which we can substitute into the formula of our line. Hence, in slope-intercept form, we find the following:
y =  \frac{2}{5}  x  +  \frac{1}{5}

7 0
3 years ago
Other questions:
  • What is the mode for the data set?
    8·2 answers
  • What is Convert 32º 15’ 45” to decimal
    10·2 answers
  • A slice is made parallel to the base of a right rectangular pyramid, as shown.
    10·1 answer
  • the number of students attending college in 2015 was 20.2million. this number expected to increase to 23.1 million by the year 2
    11·1 answer
  • Lines m and n are graphed on the coordinate plane below select all of the statements that are true
    11·2 answers
  • A $125.70 grocery total is discounted 30%. What is the total paid?
    5·1 answer
  • Chan Hee bought 9.8 pounds of coffee that cost $7.45 per pound. How much did he spend on coffee?
    8·1 answer
  • Express the sum: a-5<br> Plz help
    13·1 answer
  • Find the x-intercept and y- intercept from the following linear equation: -7x+4y=56
    12·1 answer
  • The midpoint of TU is M(1, 5). One endpoint is U(2, 0). Find the coordinates of the other endpoint T.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!