Divide and simplify completely. Assume that no denominator equals zero. d^2-1/d^2-d divided by d - 1/d

1 answer:

5 0

First, you should factor both the numerator and the denominator. Since the numerator is the difference of two squares, that can be factored into (d-1)(d+1); for the denominator, you can factor out d to get d(d-1). From there, you can reduce both the numerator and denominator by (d-1) to get (d+1)/d. If you need to simplify it further, I believe you can simplify it to 1+(1/d).

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What is the next letter? Y B W D U F

Angelina_Jolie [31]

The correct answer is S. The sequence is each alternate letter, changing from one end of the alphabet to the other.

Z Y X W V U T S R Q P L M N O K J I H G F E D C B A
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Hope this helps!

5 0

3 years ago

A bowl holds 3/10 cup of oil when it is 2/5 full. Which statement best describes the quotient of 3/10 divided by 2/5?

muminat

If 3/10 cup is 2/5 full, then the bowl holds:

(3/10) / (2/5)

(3/10)/(2/5) = 3/10 * 5/2 = 15/20 = 3/4

The bowl holds 3/4 of a cup

5 0

2 years ago

How much Zn and how much HCl should be used to produce 1.5 g ZnCl2

tatuchka [14]

Answer:

0.71963 g of Zn
0.80256 g of HCl

Step-by-step explanation:

The required mass of reactants can be computed from the number of moles of product.

moles of ZnCl₂ = (1.5 g)/(136.282 g) ≈ 0.0110066 moles

Then the mass of Zn required is ...

mass of Zn = (0.0110066 mol)(65.382 g/mol) = 0.71963 g

Two moles of HCl are used in the reaction with each mole of Zn, so the mass of HCl required is ...

mass of HCl = 2(0.0110066 mol)(36.458 g/mol) = 0.80256 g

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<em>Comment</em>

The discrepancy in the last two decimal places of the weights above versus the calculator output below comes from rounding of moles of Zn to 4 significant digits, instead of 5 or more. The number of moles of ZnCl₂ is closer to 0.0110066.