if a researcher analyzed data using linear regression correlating a performance test and gpa and calculated a slope of 0.028 and y intercept of 0.63. what would be the predicted student's gpa if she scored 63 on the performance test?

Answer:

-2x + 8

Step-by-step explanation:

(2x - 6) is subtracted from (7 - 5).

First term that into an equation.

Because our first term is being subtracted from our second one, our equation is written as:

(7 - 5) - (2x - 6).

Simplify the first term by subtracting:

7 - 5 = 2

Now simplify the second term by multiplying 2x - 6 by -1 to get them out of the parenthesis. We do this because there is a negative sign in front of it.

-1 (2x - 6)

-2x + 6

Now our equation is:

2 - 2x + 6

Combine like terms:

2 + 6 = 8

So -2x + 8

(2x - 6) subtracted from (7 - 5) is -2x+8

A certain bacteria strain needs 4 hours to double its population. If in the beginning there are 45 bacteria, after 1 day, the number of bacteria present is 2,880, after 2 days, the number of bacteria is 184,320, after 3 days, the number of bacteria is 11,796,480.

The problem can be solved using the exponential growth model.

In the given problem, the formula for the growth model is given, that is:

f(x) = 45 (64)^(x)

Where:

f(x) = total number of bacteria present after x days

To find f(x) for 1 day, 2 days, and 3 says, substitute x = 1, x = 2, and x = 3 into the formula.

f(1) = 45 (64)¹ = 2,880

f(2) = 45 (64)² = 184,320

f(3) = 45 (64)³ = 11,796,480

Hence,

after 1 day, the number of bacteria present is 2,880, after 2 days, the number of bacteria is 184,320, after 3 days, the number of bacteria is 11,796,480.

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Answer:

(-15x^3 -12x^2 -5x-3)

Step-by-step explanation:

You can't add/subtract numbers that have different exponent numbers so you have to stick with the ones that have the same number

So then the coefficients would be:

x^3 : -9 - 6 = -15

x^2 : -7 -5 = -12
x: -3 -2 =-5
0: -1 - 2 = -3

Lexi drinks 3/10 gallon of water in one hour.

Ratio basically compares quantities, that means it show value of one quantity with respect to other quantity.

If a and b are two values, their ratio will be a:b,

Given that,

Lexi drinks water in 50 minutes = 1/4 gallon

To find water that Lexi drinks in one hour,

Use ratio property,

50 minutes = 1/4 gallon

1 minute = 1/(4 x 50)

60 minutes = 60/(4 x 50)

60 minutes = 3/10 gallon

Lexi drinks 3/10 gallon of water in 1 hour.

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Answer: none of the above

Explanation: as it's - -8/-4 it means the answer is negative which none of the answers provided are so it's none of the above

The probability for observing the expected count will be given by [tex]E_i = nP_i[/tex]

Consider an experiment with n independent trials and k > 3 mutually incompatible outcomes.

Where [tex]P_i[/tex] stands for the likelihood of seeing the i-th result.

Hence for the nth expected result on i will be given by multiplying the i-th probability with the expected variable n.

Hence [tex]E_i = n\times P_i[/tex]

∴ [tex]E_i = nP_i[/tex]  provides the predicted numbers for each potential outcome.

where pi is the likelihood of seeing the i-th result.

The predicted count of the i-th result is called [tex]E_i[/tex].

When two events cannot occur concurrently at the same moment, they are said to be mutually exclusive in accordance with probability theory. Or, to put it another way, discontinuous events are said to be mutually exclusive.

There is no possibility of two occurrences occurring simultaneously if they are viewed as separate events. If two events do not take place at the same time, they are said to be mutually exclusive. If a coin is tossed, the outcome will always be either head or tail; we cannot get both.

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There is significant relation between price and overall score.

Given that,

Following are details on the cost ($) and final rating for the six stereo headphones that Consumer Reports examined. ($) brand price Score: Bose 180, 72 Scullcandy 150, 78 Koss, 96, 54 Phillips/O'Neill, 72, 42 Denon, 48, 24.

a) t =3.54

The P value is less than 0.2

There is significant relation between price and overall score.

P value is between 0.01 and 0.025.

Because p value is less than or equal to 0.05 , we reject H₀ : β₁ is equal to zero.

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The total number of possible strings that can be chosen is 4^13, since there are 13 characters and 4 possible choices for each character, b, c, d). Now, we need to determine the number of strings that contain at least one pair of adjacent characters that are the same in this probability.

To do this, we'll consider each letter in the string and calculate the number of possible strings that contain at least one pair of adjacent characters that are the same for that letter. For the first letter in the string, there are 4 strings that contain at least one pair of adjacent characters that are the same (aa, bb, cc, dd).For the second letter in the string, there are 4 strings that contain at least one pair of adjacent characters that are the same (ab, be, cd, dc).For the third letter in the string, there are 4 strings that contain at least one pair of adjacent characters that are the same (ac, bd, ca, db.).For the fourth letter in the string, there are 4 strings that contain at least one pair of adjacent characters that are the same (ad, bc, da, cb).

We can continue this process for each letter

We get probability as 83.3%

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The error that Bobby most likely made in verifying if the relation is a function is given as follows:

C. Bobby drew the incorrect arrow diagram. The correct arrow diagram of the relation is a function. Bobby's arrow diagram is not a function.

A relation represents a function if each value of the input is mapped to only one value of the output.

The ordered pairs from this data-set are given as follows:

(​4,​5), ​(​9,​15), ​(14​,​22), ​and (​18,​37).

The input and the output for the pairs are given as follows:

Each value of the input is mapped to only one value of output, hence the relation represents a function.

However, Bobby made a mistake, in mapping the point (9, 15), as he mapped an input of 14 to an output of 9, and thus it would not represent a function. Hence the correct statement is given by option C.

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Answer:

5/6

Step-by-step explanation:

1. Line up the fractions

  1/6

+ 2/3

_____

2. Find the common denominator

  1/6 x 1/1

+ 2/3 x 2/2

_____

Thus, we get:

  1/6

+ 4/6

_____

3. Add

  1/6

+ 4/6

_____

  5/6

May I have Brainliest please? My next rank will be the highest one: A GENIUS! Please help me on this journey to become top of the ranks! I only need 5 more brainliest to become a genius! I would really appreciate it, and it would make my day! Thank you so much, and have a wonderful rest of your day!

Answer:

5/6 which is also 0.833

Step-by-step explanation:

(The whiteboard below)

The order of H can be 84 , 210 or 420

One of the key theorems in abstract algebra is the Lagrange theorem. According to the Lagrange Theorem , In group theory, for any finite group say G, the order of subgroup H of group G is the divisor of the order of G. The order of the group represents the number of elements

According to the question,

Group G has order 840

Also , By Lagrange's theorem

|K| divides |H| , so order of h should be multiple of 42

|H| = 42k ------(1)  (for some k)

And , H is subgroup of G

|G| should divides |H|

=> 42k should divides 840

=> k = 840/42 = 20

Since , H is proper subgroup of G

K < 20

So, either k =2 , 5 or 10

Hence , order of H can be 84 , 210 or 421

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The original Price of a case of scented candles was 8.5

A percent increase refers to how much a percentage has gone up over time.

In order to reach this number, you would need to find the difference between the original value and the final value, subtracting to find the exact total of the decrease.

The formula for calculating Percentage increase is:

(ΔPrice/Original price) × 100

change in price (new price - original price)/original price) × 100

From the question:

Percentage increase = 110%

New price = 17.85

Original price = X

so it  we can substitute in the formula

((17.85 - X)/X) * 100 = 110%

Opening brackets

(17.85*100 - X*100)/ X =110

1785 - 100X = 110X (we balance the equation)

(we collect like terms)

1785 = 210X

to find X we divide both sides by 210

1785/210 = X

8.5

The original Price was $8.5

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Answer:3

Step-by-step explanation:

20-9.50=11-3.50

Oliver and his little brother will have an additional shot of 11shots and they both have 38points

Simultaneous equations are two or more algebraic equations that share variables e.g. x and y . They are called simultaneous equations because the equations are solved at the same time. For example, below are some simultaneous equations: 2x + 4y = 14 and 4x − 4y = 4.

Represent the number of additional shot made by the brothers as x and the common point made by both of them be y

therefore,

16+2x=y equation 1

27+x= y equation 2

subtract equation 1 from 2

11-x= 0

therefore x= 11

substitute 11 for x in equation 2

y = 27+ 11

y= 38

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Answer:

Since it appears that you are talking about a triangle, if the third side that you are looking for is the hypotenuse, then you can use the Pythagorean theorem, a^2 + b^2 = c^2. In this case, the length of the side, if it would be the hypotenuse, would be approximately 21.63.

Step-by-step explanation:

Hope this helped! :D

Answer:

(2) 3 pages in 1 hour

Step-by-step explanation: Simply dividing 9/3 we get, 3/1 by unitary method this is the right answer.

The measure of the ∠1 for the given angles of the triangle are found as 1162/13.

The given angles are-

∠1 = 7x - 7.

∠2 = 4x + 2

∠3 = 2x + 6

By the angle sum property of the triangle.

∠1 + ∠2 + ∠3 = 180

Thus,

7x - 7 + 4x + 2 +  2x + 6 = 180

Simplifying,

13x = 179

x = 179/13

So, ∠1 becomes-

∠1 = 7x - 7

∠1  = 7(179/13)- 7

∠1  = 1162/13

Thus, the measure of the ∠1 for the given angles of the triangle are found as 1162/13.

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On #1, you used the side of 18 twice.

You should have had

      [tex]\dfrac{40.5}{18}=\dfrac{49.5}{22}=\dfrac{54}{\boldsymbol{24}}[/tex]

with 24 in that last denominator.  And with 24 in the last denominator, they're all equal to 2.25.

On #2, you should have compared 90 to 40 and then 81 to 36:

    [tex]\dfrac{90}{40}=\dfrac{81}{36}[/tex]

Those are both equivalent to 9/4.

Using system of linear equations, the number of cars and trucks that parked are 950 and 150 respectively.

The system of linear equations is the set of two or more linear equations involving the same variables. Here, linear equations can be defined as the equations of the first order, i.e., the highest power of the variable is 1. Linear equations can have one variable, two variables, or three variables. Thus, we can write linear equations with n number of variables.

To solve this problem, we have to write out two equations and solve the unknown variable.

x + y = 1100 ...eq(i)

0.75x + 1.25y = 900 ...eq(ii)

From equ(i)

x = 1100 - y ..eq(iii)

Put eq(iii) into eq(ii)

0.75(1100 - y) + 1.25y = 900

y = 150

Put y = 150 in equation (i)

x + 150 = 1100

x = 1100 - 150

x = 950

x = 950, y = 150

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the sample proportion under probability has a mean sampling distribution of 82.

The population percentage is the major variable in the sampling distribution of this proportion, which has a quarter-um normal distribution. Variants include population proportion times one and population proportion divided by sample size. Additionally, we are aware that the population proportion is under the null hypothesis. 200 is the sample soil. When we enter the value of P into this calculation without normalisation, we can obtain the standing ovation as the variance's root. 025 in excess. The probability that we got a sample result of 188/58 or less is then calculated. We simply need to determine this left tail probability after that.

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Using for loop we can get the syntax in order to calculate this arithmetic series n is A = 0.9999.

An arithmetic collection is the sum of the phrases in an mathematics collection with a specific range of phrases. Following is a easy system for locating the sum: Formula 1: If S n represents the sum of an mathematics collection with phrases.

This system calls for the values of the primary and ultimate phrases and the range of phrases. Finite Sequence- Finite sequences have countable phrases and do now no longer cross as much as infinity. An instance of a finite mathematics collection is 2, 4, 6, 8. Infinite Sequence- Infinite arithmetic collection is the collection wherein phrases cross as much as infinity.

using while

A=0; n=1; while n<=10000     A=A+(1/(n*(n+1)));     n=n+1; end A

output

A =      0.9999

using  for loop

A=0; for n=1:10000     A=A+(1/(n*(n+1))); end A

output

A = 0.9999.

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Correct Question:

The following series can be written with a shorthand form of sigma notation (A). Use while syntax to calculate this arithmetic series:

1/(1x2) + 1/(2x3) + 1/(3x4) + ... + 1/(n x (n+1)) ......1

A = ∈ 1/(n x (n+1)); n=[1:10000]

The pairs of function which are linearly independent are f(x) = 2cos x + 3 sin x and g(x) = 3cox x - 2 sin x.

We need to determine the pairs of functions are linearly independent or linearly dependent on the real line

f(x) = 2cos x + 3 sin x

g(x) = 3cox x - 2 sin x

Let c₁f(x) and c₂g(x) = 0

using wornkskin method

w(f, y) = [tex]\left[\begin{array}{cc}f(x)&g(x)\\f'(x)&g'(x)\\\end{array}\right] \\\left[\begin{array}{cc}2cosx + 3sin x&3cos x - 2 sin x\\-2sin x + 3 cos x&-3sin x - 2 cos x\\\end{array}\right][/tex]

= - (2cos x + 3sin x) (3 sinx + 2 cos x) - (3cos x - 2sin x) (3cos x - 2sin x)

= - (9sin²x + 4cos² x + 12cos x sin x) + 9cos² x + 4 sin² x - 12 sin x cos x

= - (13 sin² x + 13 cos² x )

= - 13

since,

w(f , g) ≠ 0

f, g are linearly independent

Therefore, the function  f(x) = 2cos x + 3 sin x and g(x) = 3cox x - 2 sin x are linearly independent.

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[tex]\cfrac{x^2-4x-45}{x+6}\div\cfrac{x^2-3x-40}{x+6}\implies \cfrac{x^2-4x-45}{~~\begin{matrix} x+6 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~ }\cdot \cfrac{~~\begin{matrix} x+6 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~ }{x^2-3x-40} \\\\\\ \cfrac{x^2-4x-45}{x^2-3x-40}\implies \cfrac{(x-9)~~\begin{matrix} (x+5) \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}{(x-8)~~\begin{matrix} (x+5) \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}\implies \cfrac{x-9}{x-8}[/tex]

He needs 2.5 pounds of ground turkey.

Given,

In the question:

Ben wants to triple his spaghetti sauce recipe, which calls for 2 pound 8 ounces of ground turkey.

To find the how much pounds ground turkey will he need?

Now, According to the question:

Let's know:

How do you convert ounces to pounds formula?

In other words, dividing a number of ounces by 16 will get you an answer in pounds. In our example, dividing the baby's weight in ounces by 16 gets us 160/16 = 10 lbs.
We know that there are 16 ounces in 1 pound,

It is meaning that 8 ounces is half a pound.

Adding this to the 2 pound gives 2 + 1/2 = 2.5 pounds of ground turkey.

Hence, 2.5 pounds of ground turkey.

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Answer:

  y = -5/8(x -8)²

Step-by-step explanation:

You want the function of the form y = a(x -h)² that passes through the points (12, -10) and (8, 0).

The vertex form of the equation of a quadratic is ...

  y = a(x -h)² +k . . . . . . quadratic with vertex (h, k)

Comparing this to the given equation, we see that k=0. This means the point (8, 0) is the vertex and h = 8.

The value of 'a' can be found using the other point.

  (x, y) = (12, -10)

  -10 = a(12 -8)²

  -10 = 16a

  -5/8 = a . . . . . . divide by 16 and reduce the fraction

The quadratic function is y = -5/8(x -8)².

__

Additional comment

The equation can also be found using technology to do a quadratic regression with the constraint that the vertex is on the x-axis.

Answer: 26%

Step-by-step explanation:

23 + 52 + 34 + 61 + 30 = 200

do 52/200 because theres 52 gumballs and times it by 100

52/200 x 100 = 26% on calculator

The inequality that can be used to represent the number of miles, x, Jaime could bicycle on the 4th week to meet his goal is 240 + 310 + 320 + x ≥ 4 (280).

What is inequality?

In mathematics, "inequality" refers to a relationship between two expressions or values that are not equal to each other.

For the next four weeks, Jaime wants to log at least 280 miles per week on average. Jamie's objective can be graphically expressed by the inequality: T4, or alternatively T 4 if T is the total number of miles he will pedal his bicycle for four weeks (280).

The sum of the distances Jamie has covered and has yet to cover is the total number of miles Jamie will cycle during this time. Hence,  T = 240 + 310 + 320 + x. Replacing this term into the inequality T ≥ 4(280) gives 240 + 310 + 320 + x ≥ 4(280). Therefore, choice D is the correct answer.

Thus, the correct answer is  240 + 310 + 320 + x ≥ 4 (280).

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$2.50 is found to be the proportionality constant for the relationship between the length of track (in inches) and the cost in dollars.

Direct proportionality is represented by the equation y = kx.

Where:

The price of the track is the dependent variable in this situation.

The tracks' length is an independent variable.

$16 = 6.4k

k = 16 / 6.4

k = $2.5

Thus, the constant of proportionality for the relationship between the length of track (in inches) and the cost in dollars is found as $2.5.

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