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3 years ago

Help my paper is almost ripped and I don't now 12 and 14

Mathematics

1 answer:

choli [55]3 years ago

5 0

The word missing in 12 is fraction and field
the missing word in 14 is dividing

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Jill was solving a system using the elimination method.After she added the equations together,she got 5=7.What does this mean fo

harkovskaia [24]

Answer:

It means the system does not have a solution

Step-by-step explanation:

5 0

3 years ago

-12 divided by 3 x (-8 + (-4) ^2 - 6) + 2

riadik2000 [5.3K]

Answer:

-3/2

Step-by-step explanation:

Here we have an ambiguous notation. Hence, I assume you mean (-12/((3 x (-8+ (-4)^2 -6) +2), which is the one that makes more sense.

First, we work the arithmetic on the denominator (D).

D= 3 x (-8 + (-4)^2 - 6) + 2

D=3 x (-8 + (-4) x (-4) -6) + 2

D= 3x (-8 +16 -6) + 2

D= 3 x (2) + 2=6 + 2=8

Now, we just have to divide -12 by D to obtain the answer.

-12/D = -12/8 =(-2 x 2 x 3)/(2 x 2 x 2) = -3/2

6 0

3 years ago

There are 20 questions and i got 65 percent how many did i get wrong

Nataly_w [17]

7 questions were incorrect.

8 0

3 years ago

Read 2 more answers

The arm span and foot length were both measured (in centimeters) for each of 20 students in a biology class. The computer output

irina1246 [14]

Answer:

The guy above me is completely wrong hahaha.

The correct answer should have a 63%.

It's probably D. The terminology is a little confusing.

The equation of the output looks like:

-7.611 + .186(x) = y

x --> Arm span

y --> Foot span

The linear relationship is formed with the armspan.

6 0

3 years ago

Math question ^^^ please help

Nookie1986 [14]

$(\frac{g}{f})(3)=\frac{-13}{21}\\$

2/3 will not be included in the domain of g/f

Step-by-step explanation:

Given functions are:

$g(x) =-2x^2+5\\f(x)=9x-6$

We have to calculate (f/g)(x) first

The steps will be as follows:

$(\frac{g}{f})(x)=\frac{g(x)}{f(x)}$

Putting the values of functions

$(\frac{g}{f})(x)=\frac{-2x^2+5}{9x-6}\\We\ have\ to\ find\ the\ value\ of\ (\frac{g}{f})(x)\ at\ 3\\So,\\(\frac{g}{f})(3)=\frac{-2(3)^2+5}{9(3)-6}\\(\frac{g}{f})(3)=\frac{-2(9)+5}{27-6}\\(\frac{g}{f})(3)=\frac{-18+5}{27-6}\\(\frac{g}{f})(3)=\frac{-13}{21}$

Domain of g/f:

$(\frac{g}{f})(x)=\frac{-2x^2+5}{9x-6}$

The function will be undefined if the denominator is zero.

To find the domain we will put the denominator equal to zero

So,

$9x-6=0\\Adding\ 6\ on\ both\ sides\\9x-6+6=0+6\\9x=6\\Dividing\ both\ sides\ by\ 9\\\frac{9x}{9}=\frac{6}{9}\\x=\frac{2}{3}$

Hence, the function will be undefined on x=2/3 so 2/3 will not be included in the domain of (f/g)(x)

<u>Answer:</u>

$(\frac{g}{f})(3)=\frac{-13}{21}\\$

2/3 will not be included in the domain of g/f

Keywords: Domain, Operations on Functions

Learn more about functions at:

#LearnwithBrainly

8 0

3 years ago