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vovikov84 [41]
3 years ago
12

a store sold 14.00 dollars worth of gift cards in october. the next month the goal was to sell $15.96 worth of gift points. this

is an increase of ___percent
Mathematics
2 answers:
Cerrena [4.2K]3 years ago
8 0
This would be 14% because as decimal it's 0.14 which is 14 hundredths.
solniwko [45]3 years ago
4 0
Subtract 14 from 15.96 to find the increase. 
15.96 - 14 = 1.96 
Divide 1.96 by 14. 
1.96 / 14 = 0.14 
In percents that is 14%. 
This is an increase of 14%. 
Hope this helps!
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(x^3-6x^2-9)/(x-6) long division
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Answer:

Step-by-step explanation:

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4 years ago
A company manufactures light bulbs. The lifetime for these bulbs is 4,000 hours with a standard deviation of 200 hrs. What lifet
arlik [135]

Answer:

The company should promote a lifetime of 3589 hours so only 2% burnout before the claimed lifetime

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 4000, \sigma = 200

What lifetime should the company promote for these bulbs, whereby only 2% burnout before the claimed lifetime?

This is the value of X when Z has a pvalue of 0.02. So it is X when Z = -2.055.

Z = \frac{X - \mu}{\sigma}

-2.055 = \frac{X - 4000}{200}

X - 4000 = -2.055*200

X = 3589

The company should promote a lifetime of 3589 hours so only 2% burnout before the claimed lifetime

4 0
3 years ago
How do you solve 250 mm ± 4% ?
AleksAgata [21]
Well 4% of 250 is 10 so i think the answer is 240 to 260 right?

3 0
3 years ago
Keisha is helping plan a race route for a 10-kilometer charity run. The committee wants to set up the following things along the
Semenov [28]
<span>Yes, there will be a total of 6 distance markers that are placed at the same location as one of the other items. At 25% through the race there will be a water station and distance marker. At 40% through the race there will be another water station and distance marker. At 50% there will be a viewing station and two distance markers. At 60% there will be a water station and a distance marker. At 80%, another water station and distance marker. And finally, at 100% through the race there will be a water station, viewing station and two distance markers.</span>
7 0
3 years ago
QUICK
creativ13 [48]
Yes that is correct to my knowledge
5 0
3 years ago
Read 2 more answers
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