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
riadik2000 [5.3K]
3 years ago
11

Georges asked five of his friends how long they studied for the last math test and what grade they received. He found a linear r

egression equation for the data to be y = 9.6x + 65.8. What does the 65.8 mean in the context of this equation?
Mathematics
2 answers:
Thepotemich [5.8K]3 years ago
6 0

The answer is: 65.8 if they did not study at all. I just took the test I promise!! :D <3 Have a great day!! <3

Crazy boy [7]3 years ago
5 0
In order to answer this problem, let us assume that x is the number of hours (the independent variable) and y is the score obtained (the dependent variable). The value 65.8 is the y-intercept which means that we will get y = 65.8 if x is equal to zero. This means that 65.8 is the score that one can get if he does not study at all. 
You might be interested in
When the sum of \, 528 \, and three times a positive number is subtracted from the square of the number, the result is \, 120. F
aleksandr82 [10.1K]

Let x be the unknown number. So, three times that number means 3x, and the square of the number is x^2

We have to sum 528 and three times the number, so we have 528+3x

Then, we have to subtract this number from x^2, so we have

x^2-(3x+528)

The result is 120, so the equation is

x^2 - 3x - 528 = 120 \iff x^2 - 3x - 648 = 0

This is a quadratic equation, i.e. an equation like ax^2+bx+c=0. These equation can be solved - assuming they have a solution - with the following formula

x_{1,2} = \dfrac{-b\pm\sqrt{b^2-4ac}}{2a}

If you plug the values from your equation, you have

x_{1,2} = \dfrac{3\pm\sqrt{9-4\cdot(-648)}}{2} = \dfrac{3\pm\sqrt{9+2592}}{2} = \dfrac{3\pm\sqrt{2601}}{2} = \dfrac{3\pm51}{2}

So, the two solutions would be

x = \dfrac{3+51}{2} = \dfrac{54}{2} = 27

x = \dfrac{3-51}{2} = \dfrac{-48}{2} = -24

But we know that x is positive, so we only accept the solution x = 27

6 0
3 years ago
Find the number that comes after 144five
Over [174]

Answer:

The number that comes after 144five is:

= 200five.

Step-by-step explanation:

Adding 1 to 144 base 5 will result in:

144

+  1

= 200

b) To obtain the next number that comes after 144five, add 1five to 144five.  Since the numbers are in base 5, 1five added to 4five will result in 0 with 1 carried backward.  When 1 is added to the next 4, the result will be 0 with 1 carried backward.  1 added to 1 = 2, all in base 5.  Figures in base 5 cannot exceed 4.  The usual numbers for a base 5 operation are 0, 1, 2, 3, and 4.

7 0
2 years ago
Why do i have to learn the quadratic equation?
marysya [2.9K]
<h2><u>↑I DON'T KNOW↓</u></h2>
  1. <em>IDK</em>
  2. <em>IDK</em>
  3. <em>IDK</em>
  4. <em>IDK</em>
  5. <em>IDK</em>
  6. <em>IDK</em>
  7. <em>IDK</em>
  8. <em>IDK</em>
  9. <em>IDK</em>
  10. <em>IDK</em>
5 0
3 years ago
A function, f(x), represents the height of a planet x months after being planted. Students measure and record the height on a mo
GarryVolchara [31]
C- the set of all positive integers
5 0
3 years ago
Read 2 more answers
Rich is building a travel crate for his dog, Thomas, a beagle-mix who is about 28 inches long, 11 inches wide, and 24 inches tal
Dmitry [639]

Answer:

27600

Step-by-step explanation:

28 long +12 -->40

11 wide +12 --->23

24 tall +6--->30

v=40×23×30=27600 cubic inches

4 0
2 years ago
Read 2 more answers
Other questions:
  • Where are the x-intercepts for f(x) = −4cos(x − pi over 2) from x = 0 to x = 2π?
    13·1 answer
  • A chemical company makes two brands of antifreeze. The first brand is 65% pure antifreeze, and the second brand is 95% pure anti
    10·1 answer
  • When using blocking to deal with extraneous factors in an experiment, the
    15·1 answer
  • Al's awesome autos advertised a special sale on cars - Dealer cost plus 5%!! Jack and Margaret boughta luxury sedan for $23,727.
    8·1 answer
  • Add three fraction together to get a whole number using the numbers 1-9 only once
    10·1 answer
  • One hundred and twenty three divided by four
    5·1 answer
  • Which expression is equivalent to 6x^5 z^3 4x^4 z^2
    14·2 answers
  • The ratio of the side lengths of a quadrilateral are 2:3:5:7. If the quadrilateral's perimeter is 68, what is the length of each
    9·1 answer
  • 12 problems in45 mins 20 problems in how much time
    7·2 answers
  • Y&lt; 3x + 6<br> Determine if (2,4) is a solution
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!