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just olya [345]
3 years ago
12

In Lesson 1.4, you learned about a water footprint. Part of a person's water footprint is the water used for cleaning. In this q

uestion, you will calculate the cost of water for laundry and bathing. You will use the City of New York 2011 rate of $7.64/100 cubic feet of water. Calculate the cost of each of the following based on this rate. Use the conversion factor of 7.48 gallons per cubic foot. a. A standard washing machine uses approximately 50 gallons of water per load4 . A household washes one load of laundry per week for 52 weeks. Find the total cost per year. 2655. # b. According to one study, the average American shower lasts for 8.2 minutes and uses 17.2 gallons. A person showers once a day for a year (365 days). Find the total cost per year. $ 6412.9 * /yr
Mathematics
1 answer:
otez555 [7]3 years ago
7 0

Answer: a) $26.55/year

b) $64.13/year

Step-by-step explanation:

a) <u>$7.64</u>   .   <u>1 ft³</u>     .     <u>50 gal</u> .   <u>1 load </u>   .  <u>52 week</u>   = $<u>26.55</u>

    100 ft³   7.48 gal      1 load      1 week       1 year           year

The total cost per year is $26.55

b)<u>$7.64</u>   .   <u>1 ft³</u>     .     <u>17.2 gal</u>      .   <u>1 shower </u>   .  <u>365 days</u>   = <u>$64.13</u>

    100 ft³   7.48 gal      1 shower         1 day            1 year            year

The total cost per year is $64.13

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3 years ago
What is 0.0592 in scientific notation
DiKsa [7]

Answer:

5.92 times 10 to the 2nd power.

Step-by-step explanation:

So funny I just finished my unit on scientific notation! So what you do is you count the distance from the first non-zero number (in this case, it would be after 5), and count how many places there are until the decimal point. I hope this helped! :D

7 0
3 years ago
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A study was conducted to see if students given extra oxygen prior to taking the SAT could improve their scores. It was found tha
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Answer:

Hypothesis testing of ' significance of difference between means'

Step-by-step explanation:

Study conducted to tests whether oxygen level prior SAT score improves test score. This can be done through - Hypothesis testing of ' significance of difference between means'.

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Null hypothesis [H0] = x1 = x2 , Alternate Hypothesis [H1] : x1 < x2

6 0
3 years ago
Bianca had a weekly allowance of $8.50 two years ago. Last year, her weekly allowance was $9.75. This year, Bianca's weekly allo
Natasha_Volkova [10]

Answer:

No

Step-by-step explanation:

In this particular scenario, based on the numbers I would say that it does not make sense to represent this with a constant rate. That is because in a span of three years the change between each year is completely different, for example, between the first and second year there was a change of

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Between the second and third year, there was a change of

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What is the volume of a hemisphere with a radius of 2.3m round to the nearest tenth of a cubic meter
kodGreya [7K]

Answer: 25.5 m^{3}

Step-by-step explanation:

If the volume of a sphere is

V=\frac{4}{3} \pi r^{3}

Where r=2.3 m is the radius

The volume of a hemisphere is half the volume of the total sphere:

V_{hemisphere}=\frac{V}{2}=\frac{\frac{4}{3} \pi r^{3}}{2}

V_{hemisphere}=\frac{2}{3} \pi r^{3}

Solving this equation:

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Finally:

V_{hemisphere}=25.48m^{3} \approx 25.5 m^{3}

5 0
3 years ago
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