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Yuliya22 [10]
3 years ago
7

A package of 8-count AA batteries costs $6.40. A package of 20-count AA batteries costs $15.80. Which statement about the unit p

rices is true?
Mathematics
1 answer:
sdas [7]3 years ago
5 0

Answer:

The unit price of the 20 pack is $0.79 and the unit price for the 8 pack is $0.80.

Step-by-step explanation:

Simply Take the price of the pack of batteries divided by the number within the pack.

$6.40 / 8 == $0.80

$15.80 / 20 == $0.79

Cheers.

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Answer:

b or c

Step-by-step explanation:

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(1+cos2x)/(1-cos2x) = cot^2x
sesenic [268]

We will turn the left side into the right side.

\dfrac{1 + \cos 2x}{1 - \cos2x} = \cot^2 x

Use the identity:

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\dfrac{1 + \cos^2 x - \sin^2 x}{1 - ( \cos^2 x - \sin^2 x)} = \cot^2 x

\dfrac{1 - \sin^2 x + \cos^2 x }{1 - \cos^2 x + \sin^2 x} = \cot^2 x

Now use the identity

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\dfrac{\cos^2 x + \cos^2 x }{\sin^2 x + \sin^2 x} = \cot^2 x

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8 0
3 years ago
Write the equation of the line that passes through the given points. (0,4) (-2,-5)
valentina_108 [34]

Answer:

y=-9/2x plus 4

Step-by-step explanation:

y=ax plus b

Use points from the task.

4=0x plus b

so b=4

-5=-2a plus 4

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a = -9/2

y=-9/2x plus 4

8 0
3 years ago
3+4=4+___? I need help for the math assignment. Thank you.
Montano1993 [528]

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777dan777 [17]
<h3>Answer ↓</h3>

option B.

Calculations ↓

First, let's think of two numbers so that :

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4 and 1

Plug these numbers here :

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So the correct factored form of this expression is

Option B) (x+4)(x+1)

\footnotesize\text{hope\:helpful~}}

7 0
2 years ago
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