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Mandarinka [93]
3 years ago
15

The annual profits for a company are given in the following table, where x represents the number of years since 1992, and y repr

esents the profit in thousands of dollars. Write the linear regression equation that represents this set of data, rounding all coefficients to the nearest hundredth. Using this equation, estimate the year in which the profits would reach 378 thousand dollars
please answer with explanation thank you ​
Mathematics
1 answer:
tensa zangetsu [6.8K]3 years ago
6 0

Answer:

tycho hits kibitz book johhckl

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Consider the quadratic equation ax^2+bx+5=0,where a, b and c are rational numbers and the quadratic has two distinct zeros.
FrozenT [24]
You have shared the situation (problem), except for the directions:  What are you supposed to do here?  I can only make a educated guesses.  See below:

Note that if    <span>ax^2+bx+5=0    then it appears that c = 5 (a rational number).

Note that for simplicity's sake, we need to assume that the "two distinct zeros" are real numbers, not imaginary or complex numbers.  If this is the case, then the discriminant,    b^2 - 4(a)(c), must be positive.  Since c = 5, 

b^2 - 4(a)(5) > 0, or b^2 - 20a > 0.

Note that if the quadratic has two distinct zeros, which we'll call "d" and "e," then 

(x-d) and (x-e) are factors of ax^2 + bx + 5 = 0, and that because of this fact,

         - b plus sqrt( b^2 - 20a )
d =  ------------------------------------
                      2a

and

 </span>         - b minus sqrt( b^2 - 20a )
e =  ------------------------------------
                      2a

Some (or perhaps all) of these facts may help us find the values of "a" and "b."  Before going into that, however, I'm asking you to share the rest of the problem statement.  What, specificallyi, were you asked to do here?

7 0
3 years ago
Can someone please help me
Ainat [17]

Answer:

20

Step-by-step explanation:

If the two triangles are similar, then corresponding sides must share a constant ratio. This means that:

\dfrac{10}{6}=\dfrac{25}{15}=\dfrac{x}{12}

Let's use the second ratio:

\dfrac{25}{15}=\dfrac{x}{12}

Multiply both sides by 12:

\dfrac{25\cdot 12}{15}=x \\\\x=20

Hope this helps!

5 0
3 years ago
Sharif likes exersicing.He goes hill-climbing every 12 days anf goes swimming every 8 days.If je goes hill-climbing and swimming
topjm [15]
This is a lowest common multiple question.
to find the lowest common multiple, you need to find the prime factors of the two numbers:
8 = 2 , 2 , 2
12 = 2 , 2 , 3
Take out duplicates:
2,2,2,3
and multiply them together:
2*2*2*3 = 24
and that is your answer.
Easy peasy.
5 0
4 years ago
Read 2 more answers
What is the vertex of the quadratic function y=-(x-3)^2+4
cestrela7 [59]

Answer:

vertex = (3, 4 )

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

y = - (x - 3)² + 4 ← is in vertex form

with (h, k ) = (3, 4 ) ← vertex

5 0
3 years ago
Whats the answer x(a+b)+2(a+b)
melamori03 [73]
Xa+xb+21+2b is the answer
4 0
3 years ago
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