MATHEMATICS HIGH SCHOOL

Write sentence as inequality. Plz help
A number x is less than 5 and greater than 3.

Answers

Answer 1
Answer:

Answer:

3<x<5

Step-by-step explanation:

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Please help me with this question
What are the roots of the polynomial f(x)=x^2+9x-70?
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During his tennis career in singles play, John won 3 fewer tournament A titles than tournament B titles, and 2 more tournament C titles than tournament B titles. If he won 17 of these titles total, how many times did he win each one? How many A titles
How many B titles
How many C titles

Answers

ok use why they told you.

17=A+B+C & A=B-3 &C=2+B
we only what to work with one variable at a time. 
lucky for us we have an idea of what "A" & "C" are. we can plug those into our first equation respectively. 

SOLVE FOR B

17= (B-3)+B+(2+B)
17=B-3+B+2+B
17=3B-1
17+1=3B
18=3B
18/3=B
6=B  (this means he won 6 B titles)

SOLVE FOR A

A=B-3
A=6-3
A=3

SOLVE FOR C

C=2+B
C=2+6
C=8

CHECK

17=A+B+C
17=3+6+8
17=17

Question 1467: Heteroscedasticity means that the variability of y values is larger for some x values than for others. True or False?

Answers

Final answer:

Heteroscedasticity does mean that the variability of y-values is larger for some x values than for others, which is a condition that can impact the efficiency of your estimator and lead to incorrect conclusions in regression analysis.

Explanation:

The statement 'Heteroscedasticity means that the variability of y values is larger for some x values than for others' is True. In the context of regression analysis, heteroscedasticity refers to the variability of the random disturbance (the y-values) being different across elements of an independent variable (the x-values). For instance, the variance of errors might increase or decrease with the level of the dependent variable. This violates the assumption of homoscedasticity in ordinary least squares (OLS) regression, which presumes that the variation around the regression line is the same for all values of the independent variable. The presence of heteroscedasticity could impact the efficiency of your estimator and could lead to incorrect conclusions about the relationship between the dependent and independent variables.

Learn more about Heteroscedasticity here:

brainly.com/question/33402365

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Choose one of the factors of x6 + 1000x2

x2 – 10

x4 – 10x2 + 100

x4 + 10x2 + 100

Answers

There are lot of possible factors. One possible factor that is in choices is x2. This is done using elimination process of choices because there are a lot of factors, x2 - 10 is not possible because x^6 is only 1. Then the other 2 is impossible since they still uses 10x2

A^3+a+a^2+1 2a^2+2ab+ab^2+b^3------------------------------- * ----------------------------------
a^3+a^2+ab^2+b^2 a^3+a+a^2b+b

Answers

(a^3+a+a^2+1)/(a^3+a^2+ab^2+b^2) \cdot (2a^2+2ab+ab^2+b^3)/(a^3+a+a^2b+b) =(a(a^2+1)+1(a^2+1))/(a^2(a+1)+b^2(a+1)) \cdot (2a(a+b)+b^2(a+b))/(a(a^2+1)+b(a^2+1)) =\n\n=((a^2+1)(a+1))/((a+1)(a^2+b^2)) \cdot ((a+b)(2a+b^2))/((a^2+1)(a+b)) = (2a+b^2)/(a^2+b^2)

Estimate the difference. 9 1/2- 1 6/7

Answers

3.64 is the estimated difference 

Answer: The answer is 8 1/2! Hope this helped :)

Jack is now seven times as old as James. In 5 years, Jack will be five times as old as James. How old is James now?Answers: 70 55 10

Answers

the answer to this question 70, because jack would be 55
 

Answer: 10

Step-by-step explanation:

James's age = x

Jack's age = y

y = 7x

y + 5 = 5(x + 5)

y = 7x

y + 5 = 5x + 25

7x - y = 0

5x - y = -20

7x - y = 0

-5x + y = 20

2x = 20

x = 10

James's age: x = 10
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