Mathematics, 26.10.2020 04:40 stefkellum58

Choose one of the formulas, i do not know which one to choose from. Explanation as well please. At the end of week one, a stock had increased in value from $5.75 a share to $7.50 a share. Find the percent of increase at the end of week one to the nearest tenth of a percent. At the end of week two, the same stock had decreased in value from $7.50 to $5.75.Is the percent of decrease at the end of week two the same as the percent of increase at the end of week one?Justify your answer.

Choose one of the formulas, i do not know which one to choose from.Explanation as well please.

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Answer from: maria051002camp

Find the percent of increase at the end of week one to the nearest tenth of a percent.

First, we will find the increase. I don't think it's any of the 3 formulas listed.

The formula I'll be using is Increase = Increased value - Original value

Let x be increase.

x = $7.50 - $5.75

x = $1.75

We then divide the increase by the original value.

Percent of increase = Increase/Original value

Let x be percent of increase.

x = $1.75/$5.75

x is approximately 0.30437

To turn a decimal into a percent, multiply it by 100.

0.30437 x 100 = 30.437

30.437 can be rounded to 30.4

The percent of increase at the end of week one is 30.4%

At the end of week two, the same stock had decreased in value from $7.50 to $5.75.

We will first need to find the percent of decrease.

The formula will be Decrease = Original value - Decreased value

Let x be decrease

x = $7.50 - $5.75

x = $1.75

We then divide the decrease with the original value.

Percent of decrease = Decrease/Original Value

Let x be percent of decrease

x = $1.75/$5.75

x is approximately 0.30437

To turn a decimal into a percent, multiply it by 100.

0.30437 x 100 = 30.437

30.437 can be rounded to 30.4

The percent of decrease at the end of week one is 30.4%

Is the percent of decrease at the end of week two the same as the percent of increase at the end of week one? Justify your answer.

No because the full percent of increase at the end of week one is 100% + 30.4% so that would be like a 130.4% increase while at the end of week two, it would be 130.4% - 30.4% and that would lead us back to 100%.

Answer from: Quest

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

$\frac{1}{4}=\frac{x}{5}\\\\x=\frac{4}{5}\\\\x=0.8$

hence, first option 'a' is correct.

Answer from: Quest

Ithink it is 52

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