Calculate C(12,5) by hand. As C(n,r) = n!/(n-r)!r! identify n and r, and write out every number in n!, same with (n-r)! and r!. Then cancel numbers appropriately in the numerator and denominator and simplify to one number.

Q: Evaluate if x=4,8,3,-2 ∑x ∑x+1 ∑(x+1) 3∑x - 4

A: Given that  if x=4,8,3,-2

Q: 4x (3x - 1) %3D -12х + 4 О Tue O False

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Q: Which of these expressions is the same as I+3+ 2 I+3 Select one: O a. O c. O d. O e. = (x+3)²+3…

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Q: Evaluate the combination. C(44,22)

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Q: If -91 and B -3 [8 A = -10 3 4 then 188 А(5B) -

A: We will find out the required value.

Q: Please find comp,(b), type in just a number, integer. a={/3, 1) and b=5{/3–1, 3+1)

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Q: Find the product of the real numbers  7/19*12/331*(-38/7)=

A: First we multiply the numerators and the denominators straight away, then we reduce the fraction.…

Q: 8x + 6 c² + 9x - 361] S[x² 3x

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Q: What integer represents the overall change in position?

A: This is to understand the operation of signed integers. In particular one has to understand the…

Q: Multiply (-3xy")(6x²y") A 18xy O3xy -18xy -18x y15 Question 25 Multiply-2n(n² - 3n+ 5) -2n +6n? -10n…

A: The given expression is -3x4y36x2y3 -3x4y36x2y5=-18x4x2y3y5=-18x4+2y3+5=-18x6y8 Therefore, option C…

Q: Simplify each expression. 1) (-3.x* + x²)+ (6x² - 2x + x*) 2) (5n + 2n*) - (4n³ – 4n* – 7n)

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Q: (n+3)!

A: (n+3)!/n! =(n+3)(n+2)!/n!

Q: let a = 3^4 7^3 11^2 13^5 and b = 2^6 5^2 7^2 11^3 13^4 Determine the values of (a,b) and [a,b] and…

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Q: For any integer a, show that a²-a+7 ends in one of the digits 3, 7, or 9.

A: For any integer a , we have to show that a2 - a + 7 ends in one of the digits 3 , 7 , or 9 . Note…

Q: Suppose an = 5an-1+4an-2 – 3an-3 and a4 = 22, аs — 127, and ag = 717. Find a1, a2, and аз. ai = a2 =…

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Q: simplify completely: 3m T72 m2 - 36 т-6

A: 3mm2-36+mm-6 We need to simplify it completely.

Q: = 5 Find a3, a4, and as for the recursive formula an = an-1 +3an-2 if a1 = 2 and a2

A: given   recursive formula is an= an-1+3an-2and   a1=2   ,  a2=5then we have to find  a3 , a4  , a5…

Q: 3 5 9 Let A = 1 and B = - 1 4 0 Find - 3A + 2B. - ЗА + 2B %3D

A: Thanks for the question :)And your upvote will be really appreciable ;)

Q: Kathy's second card tells her to go back three steps. What integer represents her move back?

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Q: 4x + 7y= 7xy Select one: O True O False

A: In this question , we will check whether the given equation is true or false .