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Wittaler [7]
3 years ago
15

What is the equation of the line of the best fit for the following data? Round to the slope and y-intercept of the line to three

decimal places

Mathematics
1 answer:
BigorU [14]3 years ago
4 0

Answer:

D. y=-0.927x+13.634

Step-by-step explanation:

We graph the points on the graph. The graph is attached.

Let us take two points (1, 14) and (15, 1), and calculate the slope mbetween them <em>(we choose these points because the line passing through them will be the best fit for all points) </em>

m=\frac{14-1}{1-15} =\frac{13}{-14} =-0.9286

Thus we have the equation

y=-0.9286x+b

Let us now calculate b from the point (1,14)

14=-0.9286(1)+b

b=14.9286

So the equation we get is

y=-0.9286x+14.9286

Let us now turn to the choices given and see which choice is closest to our equation: we see that choice D. y=-0.927x+13.634 is the closest one, so we pick it.

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Distance between two points <br> (-5,5) and ( 3,-3)
stiks02 [169]

Answer:

8\sqrt{2}

Step-by-step explanation:

Using the pythagorean theorem, you can find that the distance between the two points is \sqrt{(3-(-5))^2+(5-(-3))^2}=\sqrt{128}=8\sqrt{2}. Hope this helps!

7 0
3 years ago
Use the table to write and solve an equation to find the number of
exis [7]

Answer:

c = 11

Step-by-step explanation:

Given

Cars\ Sold:-: 8; 9; 12; c

Required

What value of c makes the mean = 10

Mean is calculated as

Mean = \frac{\sum x}{n}

In this case;

Mean = 10 and n = 4;

So, we have:

10 = \frac{8+ 9 + 12 + c}{4}

10 = \frac{29+ c}{4}

Multiply both sides by 4

10 * 4 = 29 + c

40 = 29 + c

Solve for c

c = 40 - 29

c = 11

4 0
3 years ago
Jamal dribbled his basketball for 3 minutes how many seconds was that
Scrat [10]
180 seconds hope this helps
4 0
2 years ago
Read 2 more answers
Anyone i need help with this
DIA [1.3K]

Answer:

Step-by-step explanation:

a1=90-a2

a1=90-30=60

a2 is opposite 30 and opposite angles are equal so

a2=30

The sum of the angles of a triangle are equal to 180 degrees.

a2+a3+70=180

a3+30+70=180

a3=100=180

a3=80

4 0
2 years ago
A scientist uses 3/4 of an ounce of sulfuric acid each day. How many days does it take him to empty a jar, if each jar contains
Basile [38]

Answer:

32 days

Step-by-step explanation:

Assume that the jar is full initially, containing 24 oz.  After how many withdrawals of 3/4 oz will the jar be empty?

24 - (3/4)n = 0, or

24 = (3/4)n, or 96 = 3n.  Dividing both sides by 3, we get n = 32.

The jar will be empty after 32 days.

6 0
3 years ago
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