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
dlinn [17]
3 years ago
13

The points (-1,r) and (15,1)lie on a line with slope 1/2. Find the missing coordinate r.

Mathematics
1 answer:
maria [59]3 years ago
3 0

Slope is the change in y over the change in x:

Slope = (y2 - y1) / (x2-x1)

Replace the letters in the equation with the given information:


1/2 = (1 - -1) / (15 -r)

Cross multiply:


1 * (15-r) = 2 * (1- -1)

Simplify:

15 -r = 4

Subtract 15 from each side:

-r = -11

Because r is negative, you need to multiply both sides by -1 to make r positive:

r = 11


You might be interested in
Logan's e-reader sent a notification saying that he has completed 75% of the e-book.
Vika [28.1K]

Answer:

The total number of pages in the e-book is 240.

Step-by-step explanation:

Given:

Logan has completed 75%

Logan has read 180 pages

To Find:

The total number of pages in the e-book= ?

Solution:

Let X be the total number of pages on the e-book

then

=> 75% of X = 180

Now lets find the value of X

X = \frac{180}{75\%}

X = \frac{180}{\frac{75}{100}}

X = \frac{180}{0.75}

X = 240

5 0
3 years ago
A man is lying on the beach, flying a kite. He holds the end of the kite string at ground level and estimates the angle of eleva
Ulleksa [173]
This question uses trig

sin(55) = height/195

Therefore, height = 195sin(55) meters (just plug in calculator)
7 0
3 years ago
PLEASE HELP WITH 1-2!!!!
ratelena [41]
1-2 = -1
If that's what u mean
3 0
3 years ago
Find the mean, median, mode, range, and standard deviation of the data set obtained after multiplying each value by 2. Round to
Elena L [17]

Answer:

mean: 8.9, median: 9, mode: 3, range: 14, standard deviation: 5.1

Step-by-step explanation:

The mean is all the numbers added up, divided by how many numbers there are. To get the median you arrange the numbers biggest to smallest and find the middle number.

7 0
4 years ago
Read 2 more answers
Equilateral triangle ABC has a perimeter of 96 millimeters. A perpendicular bisector is drawn from angle A to side BC at point M
a_sh-v [17]

Answer:

16 mm  

Step-by-step explanation:

Since ABC is an equilateral triangle, all three sides are the same length.  The perimeter is found by adding together all of these equal sides; letting x represent the length of a side of the triangle, this gives us

x + x + x = 96

Combining like terms,

3x = 96

Dividing both sides by 3,

3x/3 = 96/3

x = 32

Since AM is a perpendicular bisector, it splits BC into two congruent sections. This means the length of MC, half of BC, will be 32/2 = 16.

3 0
3 years ago
Read 2 more answers
Other questions:
  • Find the exact value of each trigonometric function
    11·1 answer
  • What is the area of a triangle h=5 b=6
    13·2 answers
  • Perform the indicated operation xy+xz/xz-z^2 times xy-yz/xz+yz+y^2+yz/x^2+xy
    5·2 answers
  • A tennis player plays with an equal opponent. What is more likely for him: to win one game out of two or two out of four?
    10·1 answer
  • 16. If Owen's house is point A (11, 3) and David's house is point B (15, 13),
    11·1 answer
  • Help out please and thank you
    6·1 answer
  • Does anybody know the answer?
    12·1 answer
  • Which inequality is true?<br> 1.-1.5&gt;-0.5<br> 2.-1/2&gt;0<br> 3.-2.5&lt;-2<br> 4.-1 1/2&gt;1.5
    10·1 answer
  • I need help so bad please !!???
    12·1 answer
  • Maureen says that if a system of linear equations has three equations, then there could be exactly two solutions to the system.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!