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3 years ago

Is

Mathematics

1 answer:

Oksi-84 [34.3K]3 years ago

5 0

Answer:

Area for square is the product of 2 sides. So (9x+3)(9x+3)=81x^2 + 54x + 9

Simplify it by dividing all of the numbers by 9. So,

it'd be 9x^2 + 6x + 1

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Suppose you scored 95 on a measure where the mean was 110 and the standard deviation was 15. Assuming a normal distribution, wha

never [62]

Answer:

34% of scores should fall between your score and the mean.

Step-by-step explanation:

Let <em>X</em> denote the score.

It is provided that X follows a normal distribution with mean 110 and standard deviation 15.

A students score, <em>x</em> = 95.

Compute the probability of scores that should fall between the student's score and the mean as follows:

$P(95$

$=P(-1$

Thus, 34% of scores should fall between your score and the mean.

5 0

3 years ago

If f(x) is discontinuous, determine the reason.

inn [45]

The function is

$f(x) = \begin{cases} x^2-4 &\mbox{if } x\ \textless \ 1, \\ 
x+4 & \mbox{if } x\ \textgreater \ 1. \end{cases}$ .

To the left of 1 the function is a quadratic polynomial, to the right, it is a linear polynomial. Polynomial functions are always continuous, so the only candidate point for discontinuity is x=1.

The left limit is calculated with 1 substituted in $x^2+4$ , which gives 5.

The right limit, is computed using the rule for the right part of 1, that is x+4.

Thus, the right limit is 1+4=5.

So, both left and right limits are equal. Now if f(1) is 5, then the function is continuous at 1.

But the function is not defined for x=1, that is x=1 is not in the domain of the function. Thus, we have a "whole" (a discontinuity) in the graph of the function.

The reason is now clear:

Answer:<span> f(1) is not defined</span>

5 0

4 years ago

What is the value of

Lisa [10]

Answer:

Please let me know if my calculations were incorrect. I am very sorry but unfortunately, your answer will be negative and not a whole number. None of the answers fit. It is either that I made a mistake or there is something wrong with the question.

Step-by-step explanation:

$\frac{103*10-5*1010}{106} \\\frac{1030-5050}{106} \\\frac{-4020}{106} \\\\\frac{-2010}{53}$

5 0

3 years ago

7 B is the midpoint of AC. AB - BV, and

aleksklad [387]

Answer:

i think G sorry if its wrong

Step-by-step explanation:

6 0

3 years ago

Passing through(-1,8) and parallel to the line whose equation is 8x-9y-2=0

notka56 [123]

<h3>Answer:</h3>

y = 8/9x + 80/9

<h3>Step-by-step explanation:</h3>

<u>We are given;</u>

Equation of a line as 8x -9y -2 = 0
Coordinates (-1,8)

We are required to determine the equation of a line parallel to the given line and passing through a point (-1,8)

<h3>Step 1: Determine the Gradient of the given line </h3>

When an equation is written in the form y = mx + c, m is the gradient.
Therefore; we could write the equation 8x -9y -2 = 0 in the form of y= mx + c

9y = 8x -2

y = 8/9x - 2/9

Therefore, the slope, m = 8/9

<h3>Step 2: Determine the equation of the line</h3>

We need to know that parallel lines have the same gradient
Therefore, the slope of the line in question is 8/9
It passes through a point (-1, 8)

We can therefore, determine the equation;

Taking another point, (x,y)

$\frac{y-8}{x+1} = \frac{8}{9}$

9(y-8) = 8(x+1)

9y - 72 = 8x + 8

9y = 8x + 8 +72

9y = 8x + 80

y = 8/9x + 80/9

Therefore, the equation of the line is y = 8/9x + 80/9

4 0

4 years ago