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Svetlanka [38]
3 years ago
8

You spent z dollars today. Today, you spent 5.5 times as many dollars as you spent yesterday. Which expression correctly shows h

ow much you spent yesterday?


5.5z



5.5 ÷ z



5.5(1 − z)



z ÷ 5.5



none of the above
Mathematics
1 answer:
lilavasa [31]3 years ago
3 0

Answer:

Z ÷ 5.5

Step-by-step explanation:


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dusya [7]

Answer:

1. (x + 2)² + (y - 9)² = 64

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Step-by-step explanation:

Equation of a circle:

(x - h)² + (y - k)² = r²

1. Center: (-2, 9), Radius: 8

(x - (-2))² + (y - 9)² = 8²

(x + 2)² + (y - 9)² = 64

2. Center: (-6, 9/2), Radius: 10

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3. Center: (15, -10), Radius: 1

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4 0
3 years ago
Factor the trinomial x^2-5x-6
sasho [114]

Answer: (x - 6)(x + 1)

Step-by-step explanation: This trinomial has an x² term, an x term and a constant term so it can be factored as the product of two binomials.

So starting with our two sets of parentheses, x² factors as x multiplied by x. Now we want to find factors of the constant term that add to the coefficient  of the middle term. So we're looking for factors of -6 that add to -5.

A negative number factors into the product of a positive and a negative. So our factors of -6 are 6 × -1, -6 × 1, 3 × -2, or -3 × 2.

This is a trick problem because many of these pairs of factors look like they could add to -5 but the only one that does is -6 × 1.

So our answer is (x - 6)(x + 1).

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larisa86 [58]

11P4=\dfrac{11!}{(11-4)!}=\dfrac{11!}{7!}=8\cdot9\cdot10\cdot11=7920

7 0
2 years ago
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