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3 years ago

Perform the indicated operation. 15 - 12 3 -3 -27 27

Mathematics

1 answer:

Leviafan [203]3 years ago

7 0

Answer:

Step-by-step explanation:

you just have to subtract

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× - 8÷2 is greater than or equal to -2x + 6

mixer [17]

-4 because it makes it true

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3 years ago

webassign If a snowball melts so that its surface area decreases at a rate of 6 cm2/min, find the rate at which the diameter dec

drek231 [11]

Answer:

The answer is $\frac{3}{10\pi } cm/min$

Step-by-step explanation:

Assuming the snowball is a perfect sphere, then if A denotes the surface area and D the diameter then:

$A=4\pi r^{2} = 4\pi (\frac{D}{2} )^{2} =\pi D^{2}$

Differentiating wrt r we have:

$\frac{dA}{dD} =2\pi D$

We are told that $\frac{dA}{dt}= -6$ and we want to find $\frac{dD}{dt}$

By the chain rule we have:

$\frac{dA}{dD}=\frac{dA}{dt}.\frac{dt}{dD}=\frac{\frac{dA}{dt} }{\frac{dD}{dt} }$

∴ $2\pi D=-\frac{6}{\frac{dD}{dt} }$

∴ $\frac{dD}{dt}=-\frac{6}{2\pi D}$

When D=10 then

$\frac{dD}{dt} =-\frac{6}{10*2\pi } =-\frac{3}{10\pi }$

The sign (-) shows that the D is decreasing.

3 0

3 years ago

Annual rent $ 7,380

jeyben [28]

Answer:

Part A:

Rent = $7380

Mortgage payments = $9800

Insurance = $145

Taxes, insurance, maintenance = $1780+1050$ = $2830

Loss of Interest on security deposit = (650*6%) = $39

Interest lost on down payment and closing cost = (4,500*6%) = $270

Growth in equity = $225

Annual appreciation = $1700

Tax savings for mortgage interest = (9,575*28%) = $2,681

Tax savings for property taxes = (1,780*28%) = $498

Total rental cost = $7,380+145+39=7,564$ dollars

Total buying costs = $9,800+2,830+270-225-1,700-2,681-498=7,796$ dollars

Part B:

You should consider rent because the cost of renting is less than the cost of buying.

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3 years ago

Use a protractor to find the measure of the largest angle in the figure. Write it in degrees.

Svetradugi [14.3K]

What you can put is an obtuse 108 degrees
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4 years ago

Which is greater 0.83 or 83/100

solniwko [45]

They are the same just the fraction and decimal are not the same but your answer is the same or =

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4 years ago

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