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
MatroZZZ [7]
3 years ago
12

A limnologist takes samples from a creek on several days

Mathematics
2 answers:
Vinvika [58]3 years ago
8 0

Answer:

y = 147.56 - 10.78x

Step-by-step explanation:

Given :

x = 10.2 ; y = 37.6 ; Sx = 2.8 ; Sy = 30.8 ; r = - 0.98

The regression equation :

y = mx + c

Where ;

m = slope ; c = intercept

Slope = r * (Sy/Sx)

Slope = - 0.98 * (30.8 / 2.8)

Slope = - 0.98 * 11 = - 10.78

To obtain c :

y = mx + c

y - mx = c

37.6 - (-10.78)(10.2) = c

37.6 + 109.956 = c

147.556 = c

Hence, equation becomes :

y = 147.556 - 10.78x

y = 147.56 - 10.78x

Natalija [7]3 years ago
4 0

Answer:

y = 147.56 + -10.78x

Step-by-step explanation:

You might be interested in
Which rule describes the composition of
ExtremeBDS [4]

Answer:

The second one: r x-axis. R 90(x,y)

Step-by-step explanation:

You can see that from ABC to A'B'C', it's rotated a positive 90 degrees. then, from A'B'C' to A"B"C", reflected across x-axis. and when writing the transformation, it goes by last to first. that's why the R 90 comes first.

8 0
2 years ago
(7z^3+42z^2-15z+1)- (36z^2+12z-21)​
My name is Ann [436]

Answer:

7z^3+6z^2-27z+22

Step-by-step explanation:

The given question is of subtraction:

So,

(7z^3+42z^2-15z+1)- (36z^2+12z-21)​

=7z^3+42z^2-15z+1-36z^2-12z+21

Combining alike terms to simplify

=​7z^3+42z^2-36z^2-15z-12z+1+21

=7z^3+6z^2-27z+22

So the answer in simplified form is:

7z^3+6z^2-27z+22 ..

6 0
3 years ago
Read 2 more answers
Make a number line for 42+59
yuradex [85]

Answer:42 + 59 is 101


Step-by-step explanation: so draw the line for the number line and mark it by tens by going 10 20 so on and so on then do 4 of the ten hops and and 2 tiny hops then get a diffrent color pencil and do the number 59 in jumps


7 0
3 years ago
The toy shop stocks tricycles and go-carts.
Mandarinka [93]

Total number of wheels in the toy shop = 37 wheels

Number of wheels for tricycles = 3

Number of wheels for go-carts = 5

  • Since the total number of tricycles and go-carts are not given, we solve this question using Assumption.

  • Let's assume: We have 4 tricycles and 4 go-carts

(4 x 3) + (4 x 5)

= 12 + 20

= 32 wheels. This assumption is wrong.

  • Let's assume: We have 4 tricycles and 5 go-carts

(4 x 3) + (5 x 5)

= 12 + 25

= 37 wheels. This assumption is correct.

Therefore, we have  4 tricycles and 5 go-carts in the toy shop.

To learn more, visit the link below:

brainly.com/question/23264573

3 0
2 years ago
Mel slides down waterslide A, and Victor slides down waterslide B. After 2 seconds, Mel was 50 feet in the air, and after 5 seco
iren [92.7K]
You have to add all the numbers then leave one and subtract it
8 0
3 years ago
Other questions:
  • J Problem: Find the slope of a line parallel to each given line. 5) y = 3x - 5​
    11·1 answer
  • Find the missing length
    5·1 answer
  • What is the solution to 2x-8&lt;12 ? <br> A. X&lt;2<br> B. X&lt;8 <br> C. X&lt;10<br> D. X&lt;40
    12·1 answer
  • What is the length of the hypotenuse of the triangle?
    15·2 answers
  • What is the most hard subject in math
    7·1 answer
  • Jade can travel 42 miles in 4 hours. Please calculate Jade's rate of speed. (round to 2 decimal places)
    13·2 answers
  • 6 + 4x - 9 what is the awnser
    15·1 answer
  • 3
    14·2 answers
  • What is the surface area of a cylinder with radius x + 3 and height x + 11?
    13·1 answer
  • A parabola opening up or down has vertex (0,-4) and passes through (-12,14). Write its equation in vertex form
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!