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3 years ago

Conjecture #2- The product of two rational numbers is always?

Mathematics

1 answer:

Gala2k [10]3 years ago

5 0

Answer:

Rational

Step-by-step explanation:

It is always going to be RATIONAL.

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Jenny has a bookcase with 3 shelves. There are K books on each shelf. Using K, write an expression for the total number of books

marishachu [46]

3k is the answer because 3 shelfs times k books is what you are looking for so 3k

8 0

3 years ago

The 8th term of an ap is 17 and 18 term is 13 find the common difference

Marrrta [24]

Answer:

I'm assuming you meant arithmetic progression. If the common difference is d and because 18 - 8 = 10 we can write 17 + 10d = 13. Solving for d we get d = -0.4 or -2/5.

5 0

3 years ago

A simple linear regression analysis was conducted to predict the Exam 3 score of students in STA 2023 based on their Exam 1 scor

Tju [1.3M]

Answer:

Option 3) The expected Exam 3 score for someone that made a 0 on Exam 1 is a 50.57.

Step-by-step explanation:

We are given the following in the question:

$\hat{y}(x) = 50.57+0.4845x$

The above equation is a linear regression equation to predict the Exam 3 score of students in STA 2023 based on their Exam 1 score.

$\hat{y}$ : The dependent variable, Exam 3 score

x: The independent variable, Exam 1 score

Comparing to general linear equation,

$y = mx + c$

We get,

m = 0.4845, c = 50.57

where

c is the y - intercept and the score in exam 3 when exam score is 0.

$\hat{y}(0) = 50.57+0.4845(0)\\\hat{y}(0) = 50.57$

m is the slope and tells us about the rate of change.

When exam 1 grade is increased by 1, we can write,

$\hat{y}(x) = 50.57+0.4845x\\\hat{y}(x+1) = 50.57+0.4845(x+1)\\\hat{y}(x+1)-\hat{y}(x) = 50.57+0.4845(x+1)-( 50.57+0.4845x)\\\hat{y}(x+1)-\hat{y}(x) = 0.4845(x+1-x)\\\hat{y}(x+1)-\hat{y}(x) = 0.4845$

Thus, the y-intercept for the given equation can be interpreted as

Option 3) The expected Exam 3 score for someone that made a 0 on Exam 1 is a 50.57.

6 0

3 years ago

Read 2 more answers

The function g(x)= x^2+3. The function f(x) = g(x+2).

emmasim [6.3K]

so you would siplify it and it would come out to: f(x)=g(2).

5 0

3 years ago

Solve this equation:<br><br> -5(x - 2) - 3x = -80

sdas [7]

Answer:

x=45/4

Decimal Form:

x=11.25

Mixed Number Form:

x=11 1/4

Step-by-step explanation: PLEASE MARK ME BRANLIST AND IF U CAN ANSWER MY QUESTION FROM MY PROFIL WOULD BE NICE.

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4 0

3 years ago