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weqwewe [10]
3 years ago
12

A board 12 3/4 feet long is cut so that 9 7/8 feet are left. What length of the board was cut off?

Mathematics
1 answer:
maria [59]3 years ago
4 0
If you would like to know what length of the board was cut off, you can calculate this using the following steps:

12 3/4 feet long board - 9 7/8 feet = 12 3/4 - 9 7/8 = 51/4 - 79/8 = 102/8 - 79/8 = (102 - 79) / 8 = 23/8 = 2 7/8 feet

The correct result would be B) 2 7/8 feet.

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Can someone please help me with this ?? im really confused but i need to pass this test!
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Answer:

84^{\circ}

Step-by-step explanation:

The measure of an inscribed angle is exactly half the measure of the arc it forms. Thus, we have the following equation:

2(7x-7)=9x+21

Solving, we get:

2(7x-7)=9x+21,\\14x-14=9x+21,\\5x=35,\\x=7

Plugging in x=7 into 9x+21:

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4 years ago
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Consider the statement "There are no simple solutions to life's problems."
aliya0001 [1]

Answer:

See below

Step-by-step explanation:

Remember the notation and rules of quantifiers. ∀ is the universal quantifier and ∃ is the existential quantifier. To negate ∀x p(x) , write ∃x ¬p(x). To negate ∃x p(x) , write ∀x ¬p(x)

Part I:

A) None of life's problems have a simple solution.

B) All of life's problems have a simple solution.

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D) All of life's problems have a simple solution (notice how the original statements in B and D mean exactly the same)

E) Some of life's problems do not have a simple solution.

Part II: Let x be a variable representing one of life's problems, y be a variable representing solutions, p(x):="x has a simple solution", and q(x,y):="y is a simple solution of x".

A) (∀x)(¬p(x)) or ¬(∃x)(p(x))  

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D) (∀x)(p(x))

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