2 years ago

What is the quadratic regression equation for the data set?

Mathematics

1 answer:

Svet_ta [14]2 years ago

6 0

Answer:

y=−0.004x2+0.415x−0.546

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Find the sum of the following infinite geometric series, if it exists.

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2 years ago

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If the numerator and denominator of the fraction is increased by 2an1 respectively; it becomes3/4 if the numerator and the denom

ipn [44]

Answer:

The fraction is $\frac{7}{1}$

Step-by-step explanation:

Let the numerator be x and denominator be y

So, Fraction = $\frac{x}{y}$

Now we are given that numerator and denominator of the fraction is increased by 2 and 1 respectively. it becomes 3/4

So, Fraction becomes : $\frac{x+2}{y+1}=\frac{3}{4}$

$4(x+2)=3(y+1)$

$4x+8=3y+3$

$4x-3y+5=0$ ----1

We are also given that the numerator and the denominator are decreased by 2 and 1 respectively , it becomes 1/2

So, Fraction becomes : $\frac{x-2}{y-1}=\frac{1}{2}$

$2(x-2)=y-1$

$2x-4=y-1$

$2x-y-3=0$ ---- 2

Substitute the value of y from 2 in 1

$4x-3(2x-3)+5=0$

$4x-6x+9+5=0$

$14=2x$

$7=x$

Substitute the value of x in 2

$2(2)-y-3=0$

$4-3=y$

$1=y$

So, Fraction = $\frac{x}{y}=\frac{7}{1}$

Hence The fraction is $\frac{7}{1}$

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2 years ago

Harvard University accepted students for every 100 applicants how many students will be accepted if 850 applicants apply for adm

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3 years ago

A package weighs 80 ounces. What is the weight of the package in pounds?

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Answer:

Step-by-step explanation:

1 ounce = 0.0625

0.0625 x 80 = 5

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2 years ago

Solve the equation 8y-6=5y+12

Bumek [7]

8y - 6 = 5y + 12
- 5y    - 5y
3y - 6 = 12
      + 6   + 6
   3y = 18
      3     3
   y = 6

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2 years ago