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Answer:

1. Equation: y = -1.17491x + 81.791 (you may need to round!)

2. Correlation coefficient: -0.8566

3. Strong negative correlation because the correlation coefficient is close to -1

4. Sketch the scatterplot using north latitude as the x value and Jan mean temp as the y value on the graph

Step-by-step explanation:

Step 1: Go to desmos graphing calculator

Step 2: Insert a table

Step 3: Insert values into the table (shown in image) using the north latitude as the x value and jan mean temp as y value

Step 4: Go to line 2, and type "[tex]y_1 = mx_1 + b[/tex]" except replace "=" with ~ as shown in the image. Put the 1s as subscripts

Step 5: Scroll out. Desmos would've graphed the line of best fit and plotted the points. Under statistics, you can see that r is the correlation coefficient

Step 6: The correlation coefficient r will be between -1 and 1. If it is closer to -1 or 1, it is a strong correlation. If it is closer to 0, it is a weak correlation. For example. -0.6 is closer to -1 than it is to 0, so it is a strong negative correlation. You can see that r here is -0.8566, which is strong negative.

Step 7: Lastly, you need to make the equation. It will be in the form y = mx + b. If you look under "parameters", there will be a value for m and b. Plug that in to the equation. Check to see if you need to round.

Step 8: To graph the scatterplots, you can use the graph and the points that desmos plotted as a reference. Good luck!

I hope I did it right, we just finished this at school and I got 100% on the test. Comment with any questions. Best of luck! - brainpop72

Answer:

91jr9jw9nfienfiebfuw cowcow viece

Answer: 10

Step-by-step explanation:

Answer:

If there were ten different colors including yellow then it would spin around 10 times? I am not sure because it is kind of trippy.

Step-by-step explanation:

Answer:

72,000

Step-by-step explanation:

Answer:

b= 10 miles/hr and c= 5 miles/hr

Step-by-step explanation:

Let it's downstream and upstream speed be d and u respectively

also speed of the boat be b and speed of stream be c.

as per question d = 150/10= 15 miles/hr

and, u= 150/30= 5 miles/hr

also we know d= b+c = 15.....i and u = b-c= 5....ii

solving i and ii we get b= 10 miles/hr and c= 5 miles/hr

Answer:

16 years

Step-by-step explanation:

Principal amount (P) = $600

Rate of interest (R) = 2.75%

Simple interest (S.I.) = $264

Let t denotes time period.

[tex]S.I.=\frac{PRT}{100}[/tex]

[tex]264=\frac{600(2.75)t}{100} \\\\t=\frac{264(100)}{600(2.75)}[/tex]

[tex]t=16[/tex] years.  

Therefore,

interest of $264 will be earned in 16 years.

Complete question :

Mr. Sawyer drove his car from his home to New York at the rate of 45 mph and returned over the same road at the rate of 40 mph. If his time returning exceeded his time going by 30 min, find his time going and his time returning.

Answer:

T1 = 4

T2 = 4.5

Step-by-step explanation:

Difference in time = 0.5 hour

Time = distance / speed

Let distance = d

Time, T1 = d / 45

Time, T2 = d / 40

d/40 - d /45 = 1/2

(45d - 40d) / 100 = 2

45d - 40d = 900

5d = 900

d = 180

T1 = 180 /45 = 4 hours

T2 = 180 / 40 = 4.5 hours

Answer:

3:2

Step-by-step explanation:

First, we put 45 females to 30 males into a ratio:

45:30

Now we find the GCF of both 45 and 30 which is 15.

Since it's asking for the simplest form, we would divide 15 on both sides:

45/15 : 30/15

And we end up with our final answer as 3:2

Hope this helps! :)

Answer:

84

Step-by-step explanation:

8x6=48

2x4=8

4x7=28

48+28+8=84

Answer:

The answer are

[tex]m < 1 = 76 \\ m < 2 = 61[/tex]

Step-by-step explanation:

By using the laws of parallelism

Then

[tex]m < 2 + 119 = 180 \\ m < 2 = 61 \\ by \: the \: same \: way \: \\ m < 1 = m < q \: External \\ then \\ m < 1 = 76[/tex]

Answer:

Step-by-step explanation:

16:1

Answer:according to the formula of inscribed angle theorem

[tex]3x + 22 = \frac{1}{2 } \times 134[/tex]

[tex]3x + 22 = 67[/tex]

[tex]3x = 67 - 22[/tex]

[tex]3x = 45[/tex]

[tex]x = \frac{45}{3} [/tex]

[tex]x = 15[/tex]

The answer is 15 degrees

Answer: 8.33

Step-by-step explanation:

Answer:

c=8.33

Step-by-step explanation:

Hope this helps

Plz Branliesst Answer\

Answer:

77 ft²

Step-by-step explanation:

Given that:

Surface Area of larger pyramid = 539 ft²

Scale factor of the smaller pyramid = 1/7

Tbe surface area of the smaller pyramid will be :

Scale factor * surface area

1/7 * 539ft²

= 539 ft² / 7

= 77 ft²

Answer:

Step-by-step explanation:

The O is not part of the function.

f(n) = 3n-4 is an arithmetic sequence. The first term is -1 and the common difference is 3.

Answer:

let number be x

30=5% of X

3000=5x

X=600

so,5% of 600 is 30

Answer:

x=24

Step-by-step explanation:

1) sum of interior angles in a triangle=180

instead of looking at this like 2 different triangle lets look at this like 1 big triangle

where

1 angle=41

angle2=94

and angle 3=y

so

41+94+y=180

135+y=180

y=45

so the 3rd angle is 45

now lets look at this like 2 different triangles again

in one triangle, their are 3 different angle lengths

111, 45(since corner right angle happens to be included in the 2nd triangle), and x

so

111+45+x=180(since sum of triangles is 180)

156+x=180

x=24

Step-by-step explanation:

Answer: A = 317

B = 61

Step-by-step explanation:

The following equation can be gotten from the question given. This will be:

A + B = 379 ........ i

A - B = 255 ........ ii

From equation i, make A the subject of the formula

A = 379 - B ...... iii

Put the value of A in iii into equation ii

A - B = 255

(379 - B) - B = 255

379 - B - B = 255

379 - 2B = 255

2B = 379-255

2B = 124

B = 124/2

B = 62 tons

Since A + B = 379

A + 62 = 379

A = 379 - 62

A = 317 tons

Answer:

The side it corresponds to is XZ

The domain and the range of a graph, are the possible x and y values of the graph.

The true options are: [tex]\mathbf{(a) x \ge 0,\ (d) Domain: [0, \infty),\ (g) y \ge 0,\ (i) Range: [0, \infty)}[/tex]

From the graph, we have the following highlights

The above highlights mean that: the domain and the range of the graph are 0 to infinity.

Hence, the true options are: (a), (d), (g) and (i)

Read more about domain and range at:

https://brainly.com/question/1632425

Answer:

71

Step-by-step explanation:

plz mark brainlest

Answer:

We know that Silvia has $5.50 in her piggy bank, and she earns $2 per chore she does at her house.

So if she does x chores at her house, she will have:

y = f(x) = $2*x + $5.50

where y = her savings.

This is a linear relationship, to graph this, we need to evaluate the function in two different values of x so we can get two ordered pairs.

Then we graph the ordered pairs in the coordinate axis, and then we draw a line that passes through both points.

We can use the points given by x = 0.

y = f(0) = $2*0 + $5.50 = $5.50

Then we have the point (0, $5.50)

and if we use x = 1 we get:

y = f(1) = $2*1 + $5.50 = $7.50

Then we have the point (1, $7.50)

Now we just need to graph the points (0, $5.50) and (1, $7.50), and draw a line that passes through them.

The graph is shown below.