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DaniilM [7]
3 years ago
12

Please I need this asap, my answer is wrong

Mathematics
1 answer:
zavuch27 [327]3 years ago
7 0

Answer: 512\pi

Step-by-step explanation:

Given

Equation of curve is x=\sqrt{8+y}

When this curve is rotated about the y-axis, then volume generated is given by

V=\int_{a}^{b}\pi x^2dy

When x=0, y=-8

Put the limits and solve the integral

\Rightarrow V=\int_{-8}^{24}\pi (8+y)dy\\\\\Rightarrow V=\pi\left (  8y+\dfrac{y^2}{2}\right )_{-8}^{24}\\\\\Rightarrow V=\pi \left (  8\times 32+\dfrac{24^2-8^2}{2}\right )\\\\\Rightarrow V=512\pi

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The Porter family used an online family budget estimator to compare the costs of living in Baltimore and San Francisco for a fam
alexandr402 [8]

The cost of living in San Francisco, California is greater than the cost of living in Baltimore.

Given that

The Porter family used an online family budget estimator to compare the costs of living in Baltimore and San Francisco for a family with two parents and two children.

We have to determine

Where is the cost of living higher?

According to the question

Cost of living is the amount of money needed for fixed expenses such as housing, food, taxes, and health care, as well as variable expenses.

Big cities tend to have a higher cost of living than smaller cities.

From a business perspective, we need to consider the cost of living and rent index (considering they will rent in both cities) difference in response to net earnings.

According to recent statistics, the cost of living in Baltimore is about 40 percent lower than in San Francisco.

Also, it should be noted the Porter Family would have to earn quite more than they do in Baltimore before they can maintain the same standard of living.

Supposing Porter's family is earning $50,000 in Baltimore, they would need about $89,000 to maintain the same lifestyle they lived in Baltimore.

Per data in general, we can say that it would cost ~$5000+ to live in California.

These values should be directly related to the indices difference of these underlying factors: consumer prices (CA is 4% lower than MD), consumer prices + rent (CA is 7% higher than MD), rent (CA is 28% higher than MD), restaurant (CA is 3% lower than MD), groceries (CA is 4% lower than MD), and local purchasing power is 10% higher in CA than MD.

Hence, the cost of living in San Francisco, California is greater than the cost of living in Baltimore, Maryland.

To know more about Statices click the link given below.

brainly.com/question/2950660

7 0
3 years ago
sewing a border of ribbon onto her rectangular picnic blanket. The long side of the blanket is 70cm and the short side is 40cm.
Strike441 [17]

Answer:

220 cm

Step-by-step explanation:

We need to find the perimeter of the rectangular blanket in this case because a border is being sewn onto the blanket. The perimeter of a rectangle can be calculated by multiplying the sum of the rectangle's length and width by 2. As an algebraic expression, that would be 2(l+w), where l is the rectangle's length and w is the rectangle's width. We are given that l=70 and w=40. Therefore, 2(70+40)=2*110=220 cm of ribbon will be needed. Hope this helps!

3 0
3 years ago
Pls help i don’t understand
BartSMP [9]

Answer:

its 6+7 minus8 divided by 4 square rooted =4.5

Step-by-step explanation:

8 0
4 years ago
A car used 16 gallons of gasoline and traveled a total distance of 460 miles. The car's fuel efficiency is 30 miles per gallon o
AURORKA [14]

Answer:

12 gallons

Step-by-step explanation:

Total gallons = 16 gallons

Total distance = 460 miles

Fuel efficiency in the highway = 30 miles per gallon

Fuel efficiency in the city = 25 miles per gallon

Let

h = gallons of gasoline were used on the highway.

460 = 30h + 25(16 - h)

460 = 30h + 400 - 25h

460 - 400 = 30h - 25h

60 = 5h

h = 60/5

h = 12 gallons

12 gallons of gasoline were used on the highway.

7 0
3 years ago
the area of a rectangle is 7 2/5 square feet the length of this rectangle is 3 1/12 feet what is the width
svetoff [14.1K]
The width of the rectangle is about 2.4 or 2 2/5 if you need it as an fraction.
7 0
4 years ago
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