o use divisibility in this problem but i am not sure where to start. Prove or disprove (with a counterexample), If 7 | x and 7 | y, then 7

Q: 10. Rationalize the numerator in the following expression. Show your work. Simplify the final √9+h-3…

A: We rationalize the numerator of the expression h9+h​−3​as follows:1. Identify the Expression and…

Q: 5x+5 2x-20x+18 x²-8x-9 3.

A:

Q: Ex. 2: Write each expression as a power using rational exponents. Do not evaluate. a) V12 b) (V13)…

A: rational number: any number of the form pq , where p and q are integers and q≠0 is called a rational…

Q: Show that B is the multiplicative inverse of A, where:

A: Two matrices, A and B are said to be multiplicative inverses of each other if AB and BA both results…

Q: Let a be an odd integer. Show that (i) 8 | a2 − 1; (ii) 16 | a4 + 15.

A:

Q: Suppose Var(X) = 32, Var(Y) = 47, and X and Y are independent. What is Var(.15X + .85Y)?

A: Given, a  and . and  are independent random variables.It is required to find the .To solve this…

Q: Evaluate 16a + 2-0.5b when a == and b = 14 | %3D

A: Given f(a, b)=16a+2-0.5b

Q: uppose Var(X) = 93, Var(Y) = 98, and X and Y are independent. What is Var(.6X + .4Y)?

A: Answer: - Given,  Var(X) = 93, Var(Y) = 98, and X and Y are independent.                 What is…

Q: Show by contraposition that : Vx ERX2-3x - 1020 → x25 or x< - 2

A:

Q: Circle a

A: Given, the expression that are equivalent to 5(x+6).

Q: You wrote that R has a zero divisor. So cancellation holds. I don't understand that. In the question…

A: Let R be a ring. If there is non zero elements a,b in R such that ab=0 then we say that R has no…

Q: Suppose Var(X) = 88, Var(Y) = 17, and X and Y are independent. What is Var(.28X + .72Y)?

A:

Q: The largest non-permissible value for x in the expression 10x + 5x? 4x + 20 4x2 8x - 25 + 5x is

A: Solution

Q: Express the following statement using N-notation.: 12.5 (3x + 4) for all real numbers x > 2. x + 2

A: In the given question the objective is to express the following statement using notation

Q: Evaluate: 0 V|2 − r|+dr -2

A: In this question, the concept of Integration is applied. Integration Integration is a method of…

Q: 3(3n+2)

A:

Q: P show that (α) |=1 = 12/

A: A detailed solution is given below.

Q: 2. Use diflerentials to approximate the of 2G Valu e

A: By using differential to approximate the value of 263

Q: Suppose Var(X) = 52, Var(Y) = 41, and X and Y are independent. What is Var(.89X + .11Y)?

A: Given: Var(X) = 52 Var(Y) = 41 X and Y are independent. Formula Used: VaraX+bY = a2Var(X) + b2Var(Y)…

Q: This means : ^2 to the second power . The drawing shows a diagram that proves the Pythagorean…

A: The statement "A" is correct. From A, we have a+b2=412ab+c2⇒a2+2ab+b2=2ab+c2 . . . . . (1) In…

Q: : / (12t³ – 12t² - + 7)dt Evaluate:

A: Solve the definite integral

Q: I STILL DONT UNDERSTAND HOW YOU GOT 2 AS THE MULTIPLICATIVE INVERSE IN THE FIRST QUESTION

A:

Q: Let matices

A: Given that, I=1001 ; A=100-1 ; B=-1001 ; C=-100-1 G = {I, A, B, C} Let the binary operation defined…

Q: 1. Identify the rule that justifies each step to simpl the expression. 2* (-4') a. = 24 (-4) %3D

A: Since we are given with multiple number of question with multiple subparts and our guideline is…

Q: Suppose Var(X) = 43, Var(Y) = 36, and X and Y are independent. What is Var(.67X + .33Y)?

A: GivenX and Y are independentVar(X)=43Var(Y)=36

Q: Determine whether the statement, given in inverted commas" is trueor false. If the statement is…

A: Given  We have the given term is x The given statement is false.

Q: Suppose Var(X) = 4, Var(Y) = 78, and X and Y are independent. What is Var(.58X + .42Y)?

A: Answer: - Given, Var(X) = 4, Var(Y) = 78, and X and Y are independent.                What is…

Q: Multiply (x2-y?)(x² +y?) using the distributive property and combine like terms. Generalize the…

A: The distributive property of multiplication over addition is as follows         a x (b + c) = (a x…

Q: Simplify the radeal expression 6.

A:

Q: 4x² + 4xy + y2

A:

Q: What is the coefficient of x 9 in (x 3 + x) 5?

A: What is the coefficient of x9 in x3+x5.

Q: Did not get this problem right

A: Rewriting the expression: Simplifying:

Q: Suppose Var(X) = 71, Var(Y) = 12, and X and Y are independent. What is Var(.59X + .41Y)?

A: The objective of this question is to find the variance of the linear combination of two independent…

Q: What is the simplest radical form of the expression? 23 (x²³ y 8 ) ² ○ xy 5 ³√/xy 3 3 ○ x ² y ³ √ y…

A:

Q: 1. Expand and simplify each expression. a) (8x – 3) (6x + 7) b) 3(2x + 1) – 2(x -5)?

A: