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
Bas_tet [7]
3 years ago
11

Use quadratic regression to find

Mathematics
1 answer:
vovangra [49]3 years ago
4 0

Answer:

y = 6x² -13x -5

Step-by-step explanation:

(1,-12) (2,-7) (5,80)

y = ax² + bx + c

-12 = a*1² + b*1 + c = a+b+c    (1)

-7 = 4a + 2b + c    (2)

80 = 25a + 5b + c   (3)

(2)-(1): 3a + b = 5    (4)

(3)-(2): 21a + 3b = 87   (5)

(4)*3:     9a + 3b = 15    (6)

(5)-(6):  12a = 72      a = 6

(4)                             b = -13

(2)                             c = -5

You might be interested in
Explain how to solve 4|3x-1|+1=8​
denis-greek [22]

4|3x - 1| + 1 = 8

4|3x - 1| = 8 - 1

4|3x - 1| = 7

|3x - 1| = 7/4

Now lets think, we have 3x - 1 in module, so either its 7/4 or -7/4, we will have 7/4 at the end because of it, so we may have 2 solutions in this case:

3x - 1 = 7/4

and

3x - 1 = -7/4

So let's see:

3x - 1 = 7/4

3x = 7/4 + 1

3x = 11/4

x = 11/12

3x - 1 = -7/4

3x = -7/4 + 1

3x = -3/4

x = -1/4

So we have two possible answers, x = 11/2 and x = -1/4

8 0
2 years ago
—2t(t+1),<br> t &lt; 6<br> 5t<br> g(t) =<br> =<br> ,6 6<br> 2t2 + 3t<br> t&gt; 12<br> g(12) =
yuradex [85]

Answer:to Let f(t) = 6, g(t) = −5t, and h(t) = 2t2

Step-by-step explanation:

3 0
2 years ago
If 42 people work in the plant 5/6 of them are in manufacturing how many workers are in the manufacturing plant
Tresset [83]
The answer is 35

Explanation: because 42 divided by 6 is 7 and 7 times 5 is 35
8 0
3 years ago
Read 2 more answers
8. f(x) = 2x + 2<br> what’s the solve for x ?
Aleksandr-060686 [28]

Answer:

X=-1

Step-by-step explanation:

0=2x+2

subtract 2 out

-2 = 2x

divide 2 on both sides x = -1

5 0
3 years ago
Can someone help me and not be a troll.... I’ll reward points + brainalist
babymother [125]

Answer:

The answer is 69.5

Step-by-step explanation:

First u wanna find the area of the rectangle and since it already gives you the the height and width you want to multiply them together 13×4= 52

meanwhile triangle is 5ft tall and the base is 7ft

using the formula to solve for area of a triangle you would multiply height and base and divide by 2

you should end up with 17.5 then u add that to 52 and get 69.5 ♡ Hope this helps.

4 0
2 years ago
Other questions:
  • Joe Bob wanted to find out how many hours of exercise the students at his school gets each week. He went to the school's gym and
    5·1 answer
  • 1). 21 is what percent of 168. 4) what number is 62 percent of 50
    14·1 answer
  • Solve the inequality: 2x + 10 &gt; 16​
    14·2 answers
  • (6*10^5)(7*10^6). Power ten
    5·2 answers
  • 5=a/2(b+c) <br><br> Solve for b
    14·1 answer
  • What is the lateral surface area of this cylinder? r = 7ft h = 16ft
    6·1 answer
  • HELP <br><br>I have this on my page for 100 points but no one is looking at it help pls
    5·1 answer
  • If 3/4 of the 12 pencils were sharpened, then how many pencils were sharpened?
    15·2 answers
  • For (triangle)DEF, you are required to construct the median DG to EF. Which of the following must be performed first?
    11·1 answer
  • I’ll give out brainliest to whoever explains this.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!