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
Reil [10]
3 years ago
13

Determine the value of r so that a line through the points (r,3) and (5,-4) has a slope of -1/2

Mathematics
1 answer:
CaHeK987 [17]3 years ago
3 0

\bf (\stackrel{x_1}{r}~,~\stackrel{y_1}{3})\qquad (\stackrel{x_2}{5}~,~\stackrel{y_2}{-4}) \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{-4-3}{5-r}=\stackrel{\stackrel{slope}{\downarrow }}{-\cfrac{1}{2}}\implies \cfrac{-7}{5-r}=\cfrac{1}{-2} \\\\\\ 14=5-r\implies 9=r

.

You might be interested in
Tom took four seconds to run 6 yards Diane ran 5 yards in three seconds if they continue to run at the same speed who were to ge
tatiyna

Answer:

Diane

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
If 6 people shared 5 blocks of clay evenly, how much would everyone get?
Lena [83]
Divide the number of blocks by number of people In this case 5/6 = 0.83 blocks or each person will get 0.83 or 5/6 of a block
5 0
4 years ago
Charles bought 24 blow-pops for $7.20. His little sister Tracy wants 11 blow-pops. How much will 11 blow-pops cost?
Norma-Jean [14]

$3.30 because taking the cost of 24, which is $7.20, and dividing is by the amount, 24, you get that one Blow-Pop costs $0.30. Then to find how many 11 costs you just need to multiply $0.30 by 11, and you get $3.30.

8 0
3 years ago
A parachutists rate during the freefall reaches 189 km/h. What is the rate in meters per second? At this rate how many meters wi
Lera25 [3.4K]
1 km = 1000m
1 hr = 3600 s

189 km/h
189 * 1000 / 3600 m/s
189*5/18 m/s
945/18 m/s
315/6 m/s
105/2 m/s
52.5 m/s

in 10 s
52.5*10
525 m
3 0
3 years ago
WILL GIVE BRAINLIEST THANKS AND 5 STARS FOR CORRECT ANSWER Desmond ran a lemonade stand in front of his house for the fans walki
Fiesta28 [93]

Answer:

56

Step-by-step explanation:

First, convert the 70% so that we can use it with the 80 cups. To do this, convert the percent to a decimal by moving the decimal 2 spaces to the left:

70% → 70.00 → 0.70 → 0.7

70% percent can be seen as 0.7. Multiply this by 80:

80*0.7=56

So, 70% of 80 is 56. Desmond sold 56 cups on the second Saturday.

:Done

7 0
3 years ago
Other questions:
  • randy deposited $1000 into an account that paid 2.8% with continuous compounding. what was her balance after 6 years
    10·1 answer
  • 20 points!
    13·1 answer
  • X+10y-z+2x-3y+z what is the answer
    8·2 answers
  • Which is greatest to least the square root of 99, pie or 9.8 repeating
    7·1 answer
  • What are all the values of 7/8?
    7·1 answer
  • Can somebody help me please??
    9·1 answer
  • Find the value of x in the triangle shown below
    5·2 answers
  • Which equation represents a line which is perpendicular to the y-axis?
    12·2 answers
  • Find the measure on z.
    10·1 answer
  • Solve for a. write answers as integers or as a proper or improper fractions in simplest form.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!