In the diagram below of CF, CF=x+21, CE=18+x, DF=2x+13, and DE=10. 10 2x +13 18 +x x+21 What is the length of CD? O 8 O 10 O 13 O 18

Q: Use the union rule to answer. If n(A) = 6, n(B) = 11 and n(An B) = 5, what is n(A U B)? n(A U B) =

A:

Q: If a = 4, y = 3, then 3a + 5 = 20 - y Select one: O True O False

A:

Q: Add brackets to make this statement true. Justify 12 + 12 / 6 - 2 x 3 = 13

A: The objective is to add brackets to make the statement true.

Q: The degree measures of the angles of a triangle are 3x, 5x, and 2x. Find an expression for the sum…

A: Given: The given angles are 3x, 5x and 2x. To find: An expression for the sum of the measure of…

Q: 12. Simplify. 6m? + 13m – 5 9m? – 4 8m? + 16m – 10 6m2 + m – 2

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Q: 2√128

A:

Q: If  42  x 84 were rewritten as 2x , x would be:

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Q: Given a = (-5,7) and u = (9, -4), find 3ã + 4ū. 3a + 4ū =

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Q: If e = 25, then z =

A: Given that

Q: Simplify each expression a. √50 b. √√6xx√3x² * C. d. e. 121 9 √150x² √√3x m

A: Since you have posted withmultiple sub parts. As per guidelines we are supposed to answer only first…

Q: 3. Simplify the following: a. 7-12| b. -|12-7| c. √25 d. √-25 e. -√25

A: Step 1:Step 2: Step 3: Step 4:

Q: If A=7degrees, C=115degrees and c=530yrd find a

A: We can solve the problem by the law of sine.

Q: f 98 + 3a = 4b, what is a in terms of b?

A: Given, 98+3a=4b what is a in terms of b

Q: Find, if possible, (a) AB and (b) BA.

A: A is a 3x3 matrix and B is a 3x1 matrix So the product AB will be possible. Because the number of…

Q: The number 3÷3-1-3-2 is equivalent to:

A:

Q: Find the following expressions if a = (6r, 0, r), b = (6s, –s, 7s), and c = (2t, 10t, 5). a ·b = 1.…

A: We need to find dot product.