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2 years ago

11

What is the volume of this cone in terms of pie?

1 answer:

Alecsey [184]2 years ago

8 0

Answer: C. 168.75¶

Step-by-step explanation:

volume of cone is (h/3)¶r^2

= (9/3)¶x7.5^2

=3x56.25¶

= 168.75¶

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Find an equation to the line perpendicular to 4x + 36y =80 an goes through the point (3,6) write answer in form y= Mx+b

Veronika [31]

Answer:

$\textbf{y = 9x + 21 }\\$

Step-by-step explanation:

$\textup{Given equation is: $4x + 36y = 80 $}\\\textup{This can be written in the form of $y = mx + a$ as follows}\\$ 36y = -4x + 80 $\\$ \implies y = \frac{80}{36} - \frac{4}{36}x $\\$ \implies y = \frac{-1}{9}x + \frac{20}{9} $\\\textup{This means that the slope of this line is $m = \frac{-1}{9}$}\\$

$\textup{Then the slope of the line perpendicular to this line would be \textbf{negative reciprocal of m}.}\\$i.e.,$ \textup{Slope of the perpendicular line would be $m_1 = \frac{-1}{\frac{-1}{9}}$}\\$\implies m_1 = 9$\\$

$\textup{The perpendicular line passes through the point $(3,6)$}\\\textup{Using the \textbf{point-slope formula}, we get:}\\$

$$$ y - y_1 = m(x - x_1) $$$ \implies y - 6 = 9(x - 3) $\\\textup{After solving this reduces to $y = 9x + 21$ }$

8 0

3 years ago

Plsss help me this is due Friday:{

prisoha [69]

Answer:

1.) subtract = 1 1/3 - 3 1/2 = answer

2.) subtract = 6 3/4 - 1 1/2 = answer

3.) add = 3 1/4 + 2 1/8= answer

4.) subtract = 4 3/4 - 2 1/6 = answer

Step-by-step explanation:

5.) 3 lawns = 6 3/4 hrs

1st lawn 2 1/2 hrs

2nd lawn 1 3/4 hrs

add 2 1/2 + 1 3/4 = total

then 6 3/4 hrs - total = the amount it takes to mow the 3rd lawn

im sure u know how to add and subtract fractions is u r in middle school :)

7 0

3 years ago

Slove 6x - 5<br> ———= x + 1<br> 2

leonid [27]

Answer:

1+1=2

Step-by-step explanation:

ur answer is x=6/5

3 0

3 years ago

a telephone pole casts a shadow that is 29 m long. find the height of the telephone pole if a statue that is 38cm tall casts a s

mafiozo [28]

You do cross multiplication so multiply 29 by 38 and then divide it by 78 which gives you answer of 14.128 cm

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2 years ago

Find the best estimate for the volume of the prism by rounding before you calculate

Vadim26 [7]

Answer:

I need numbers to actually calculate the problem.

Step-by-step explanation:

3 0

2 years ago

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