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
Volgvan
3 years ago
11

A scatter plot was constructed and a line of best fit was drawn, 25x 80. What is the equation of this best line of fit?

Mathematics
1 answer:
Tcecarenko [31]3 years ago
7 0

Answer:

y = 5x + 25

Explaination:

To get the equation of a line, first get the slope of the line.


Slope = (change in y)/(change in x)


          = (60-30)/(7-1)


          = 30/6


            = 5


Now use one point in the line (4,45) and a general point (x,y).


Slope = (change in y)/(change in x)


    5 = (y - 45)/(x - 4)


    5(x - 4) = (y - 45)


  5x - 20 = y - 45


y = 5x -20 + 45





You might be interested in
The coordinates of the vertices of triangle ABC are A(-1,3), B(1,2) and C(-3,-1).
Romashka [77]
In order to prove the triangle is a right angled triangle we need to prove that the slope of the lines CA and BC  and AB have any  negative reciprocals.Lets find the slopes . 
AB=(-1,3), (1,2) slope of AB = 2-3/1-(-1)= -1/2 slope of AB is -1/2
BC = (1,2), (-3,1) slope of BC is 1-2/-3-1= -1/-4 slope of BC is 1/4
Slope of CA =(-3,1)(-1,3) slope of 3-1/-1-(-3)=-2/-2=1

Since the slopes do not have any negative reciprocals so the triangle is not a right angled triangle 
5 0
3 years ago
1. Denise makes 21 quarts of ice cream. She stores the ice cream in containers
Mkey [24]

Answer:

21 containers

Step-by-step explanation:

21/1=1

4 0
3 years ago
Find the surface area of each figure (spheres and hemispheres)
xenn [34]

Answer:

7. 1520.53 cm²

8. 232.35 ft²

9. 706.86 m²

10. 4,156.32 mm²

11. 780.46 m²

12. 1,847.25 mi²

Step-by-step explanation:

Recall:

Surface area of sphere = 4πr²

Surface area of hemisphere = 2πr² + πr²

7. r = 11 cm

Plug in the value into the appropriate formula

Surface area of the sphere = 4*π*11² = 1520.53 cm² (nearest tenth)

8. r = ½(8.6) = 4.3 ft

Plug in the value into the appropriate formula

Surface area of the sphere = 4*π*4.3² = 232.35 ft² (nearest tenth)

9. r = ½(15) = 7.5 m

Surface area of the sphere = 4*π*7.5² = 706.86 m² (nearest tenth)

10. r = ½(42) = 21 mm

Plug in the value into the formula

Surface area of hemisphere = 2*π*21² + π*21² = 2,770.88 + 1,385.44

= 4,156.32 mm²

11. r = 9.1 m

Plug in the value into the formula

Surface area of hemisphere = 2*π*9.1² + π*9.1² = 520.31 + 260.15

= 780.46 m²

12. r = 14 mi

Plug in the value into the formula

Surface area of hemisphere = 2*π*14² + π*14² = 1,231.50 + 615.75

= 1,847.25 mi²

8 0
3 years ago
an experiment consists pf flipping a fair coin 4 times. what is the probability of obtaining at least one head?
yan [13]
50%

There's always a fifty percent chance that it will land on heads or tails
6 0
3 years ago
Use the ordered pair (2, 4) to find which equation describes the graph below.
Softa [21]

Answer:

From pair [2,4]

Y= 3x-2 x=2

Then y = 3[2] - 2 = 6-2 = 4

The equation [b]

4 0
2 years ago
Other questions:
  • What is the sum of 4.2 × 105 and 5.3 × 105?
    15·2 answers
  • Justin horse weighs 600 kilograms. How much does it weigh in grams
    15·2 answers
  • What is the value of 6X + 7 y - 5 when x equals two and Y equals 3​
    10·2 answers
  • Sandy is driving cross country. She has covered 200 miles from the east coast towards the west coast. She has driven this distan
    5·1 answer
  • Base 5<br> 3213<br> 3444<br> + 3323
    10·1 answer
  • -29=5u+6-12u solve for you
    13·2 answers
  • The definition of an angle uses the undefined term ?
    6·1 answer
  • Tracy has a cell phone plan that provides 250 free minutes each month for a
    12·1 answer
  • Julie is roller skating. She can skate 16 mile in 2 minute. What is Julie's rate in miles per minute?
    11·2 answers
  • How many planes are in this figure?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!