What multiplies to negative 90 and adds to negative 5

Answers

Answer 1

Answer: Dont mind the sign until fourth step

First step: find divisibles of 90
1,2,3,5,6,9,10,15,18,30,45,90

Second step:find the pairs
1*90,2*45,3*30,5*18,6*15,9*10

Third step: find which one has a difference of 5
None of them is (expand this question more so i can help you)

C. a set of four data pairs with a correlation coefficient r = –0.8

Step-by-step explanation:

The options for this answer are

A. a set of nine data pairs with a correlation coefficient r = –0.4

B. a set of five data pairs with a correlation coefficient r = 0.3

C. a set of four data pairs with a correlation coefficient r = –0.8

D. a set of six data pairs with a correlation coefficient r = 0.6

The correlation coefficient is a statistical measure about the relationship between two variables. Specifically, it tells if there's a positive or negative correlation, and how strong or weak it is.

The interval of a correlation coefficient is from -1 to 1, and the nearer the value gets to zero, the less correlation exist between variables. If the coefficient is near 1, that means there is a strong positive correlation, and if the coefficient is near -1, that means there's a strong negative correlation.

So, in this case, option C shows a correlation coefficient of -0.8, which is the "highest" coefficient among options, this means that it represents the strongest correlation among options.

Therefore, the best data set that fits a linear correlation is C.

If your data consists of scores from variables that are correlated or those that you already correlated with, then the most reasonable data statistical analysis would be a linear regression. This is used usually in order to determine if one variable predicts the other.

In a survey of 150 students, 90 students were taking algebra and 30 were taking biology. What is the least number of students who could have been taking both courses? What is the greatest number of students who could be taking both courses? What is the greatest number of students who could have been taking neither course?

Answers

The least number of students who could have been taking both courses is 0.

The greatestnumber of students who could be taking both courses is 30.

The greatestnumber of students who could have been taking neither course is 30.

What is subtraction?

The process of subtracting one number from another is known as subtraction.

Given that, there are a total of 150 students out of which 90 were taking algebra and 30 were taking biology.

The remaining students are:
150 - 90 - 30

= 30

Now, the remaining 30 students may take both subjects or neither.

Therefore, the least number of students who could have been taking both courses is 0.

The greatestnumber of students who could be taking both courses is 30.

The greatestnumber of students who could have been taking neither course is 30.

To learn more about subtraction, click here:

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30 students could of been taking both courses and 60 with no course

The diagram, AB←→ || CD←→. Which pair of angles can be proven congruent?∠EIA≅∠KIJ

∠EIA≅∠GJI

∠GJB≅∠IKL

∠GJB≅∠JLK

Answers

Opposite angles at the intersection of two straight lines are congruent.
Answer is : A) ∡ EIA and ∡ KIJ are congruent.

Answer:

∠EIA≅∠KIJ

Step-by-step explanation: i have the answer right so i can proof that this is the answer.

To find the value of a mathematical expression using the order of operations is to?

Answers

Answer:

evaluate

Step-by-step explanation:

I think your looking for PEMDAS. Typical you would find the value of the ,ath expression using PEMDAS. PEMDAS stands for Parentheses Exponents Multiplication Division Addition Subtraction. When using PEMDAS (order of operation) you have to use each letter in order, So look for parentheses and if their aren't any look for the exponents which would look like $x^(2)$ then you would do all multiplication and division then addition and subtractions