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3 years ago

10

The points in the table have been graphed in the scatter plot below. What is the best equation for the trend line, and the value

of y when x is 16?

1 answer:

lana [24]3 years ago

8 0

16 divided by 8 and it will be 2

You might be interested in

lbvjy [14]

Step-by-step explanation:

Given bi-quadratic equation is:

$x^4+95x^2 -500=0$

Substituting $x^2=a,$ given bi-quadratic equation reduces in the form of following quadratic equation:

$a^2 +95a -500=0\\$

Let us factorize the above quadratic equation:

$a^2 +95a -500=0\\\therefore\: a^2 +100a -5a-500=0\\\therefore\: a(a +100) -5(a+100)=0\\\therefore\: (a +100)(a -5)=0\\\therefore\: (a +100)=0\:\: or \:\: (a -5)=0\\\therefore\: a = - 100\:\: or \:\: a = 5\\\\CASE\: (1)\:\\When\: a = - 100 \implies x^2 = - 100\\\therefore x=\pm \sqrt{-100}\\$

Since square root of a negative number cannot be found, so:

$x \neq \pm \sqrt{-100}\\$

$CASE\: (2)\:\\When\: a =5 \implies x^2 =5\\\therefore x=\pm \sqrt{5}\\$

3 0

3 years ago

Please help quickly as possible thank you

Varvara68 [4.7K]

$68.11 all you have to do is add the tax to the amount paid for the shoes

7 0

2 years ago

Britney spent 115 minutes reading last week and 140 minutes reading this week.

Ann [662]

255? i not sure though

5 0

3 years ago

The table shows the altitudes of four different cities. What is the correct way to arrange the altitudes in decreasing order?

ki77a [65]

Answer:

A. 58, 13,-35,-51

Step-by-step explanation:

Start with the greatest positive number, 58. Then use the next greatest positive number, 13. When it comes to negative numbers, the number with the smaller absolute value is greater.

|-35| = 35

|-53| = 53

-35 has a smaller absolute value than -53, so -35 is greater than -53.

Answer: A. 58, 13,-35,-51

7 0

3 years ago

Read 2 more answers

Picky Polls asked 1600 third-year college students if they still had their original major. According to the colleges, 50% of all

Reptile [31]

Answer:

The probability that less than 800 students who said they still had their original major is 0.50 or 50%.

Step-by-step explanation:

Let the random variable <em>X</em> be described as the number of third-year college students if they still had their original major.

The probability of the random variable <em>X</em> is, P (X) = <em>p</em> = 0.50.

The sample selected consisted of <em>n</em> = 1600 third-year college students.

The random variable <em>X </em>thus follows Binomial distribution with parameters n = 1600 and p = 0.50.

$X\sim Bin(1600, 0.50)$

As the sample size is large, i.e.<em>n</em> > 30, and the probability of success is closer to 0.50, Normal approximation can be used to approximate the binomial distribution.

The mean of <em>X</em> is:

$\mu_{x}=np=1600\times0.50=800\\$

The standard deviation of <em>X</em> is:

$\sigma_{x}=\sqrt{np(1-p}=\sqrt{1600\times0.50(1-0.50)}=20$

It is provided that Picky Polls got less than 800 students who said they still had their original major.

Then the probability of this event is:

$P(X$

**Use the <em>z</em>-table for the probability.

Thus, the probability that less than 800 students who said they still had their original major is 0.50.

7 0

2 years ago