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Arturiano [62]
3 years ago
13

An appliance store reduced the price of a refrigerator by 20% and then raised the prices by 10% from the lower price. What was t

he original price of the refrigerator, if the price was $70.49 ?
Mathematics
1 answer:
Romashka [77]3 years ago
8 0

Answer: $80

Step-by-step explanation:

Let the original price of the refrigerator be represented by y.

We are told that an appliance store reduced the price of a refrigerator by 20%. This will be:

= y - (20% of y)

= y - (20/100 × y)

= y - (0.2 × y)

= y - 0.2y

= 0.8y

We are then told that the store then raised the prices by 10% from the lower price. This will be:

= 0.8y + (10% of 0.8y)

= 0.8y + (0.1 × 0.8y)

= 0.8y + 0.08y

= 0.88y

Since we told that now the price was $70.49, this means that we have to find the value of y using the above expression. This will be:

0.88y = $70.49

y = $70.49/0.88

y = $80.10

y = $80 approximately

The original price of the refrigerator is $80.

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They will be forming a right triangle. 

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At 6:00 a.m the outside temperature was -14.4 by noon, the outside temperature had dropped 8.1
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Write the first five terms of the sequence defined by the explicit formula an=-4n(n-1)
vladimir2022 [97]

The explicit formula of the sequence is given by a_n = -4n(n-1).

We have to find the first five terms of the sequence.

The first term:

\begin{gathered} a_1=-4\times(1)(1-1) \\ =-4(0) \\ =0 \end{gathered}

The second term:

\begin{gathered} a_2=-4(2)(2-1) \\ =-8(1) \\ =-8 \end{gathered}

The third sum:

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The fourth term:

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1 year ago
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