This questions worth 25 points to whoever helps me with it!

Number 3: (look at picture) 10 points ALSO SHOUTOUT TO PEOPLE ANSWERING THESE QUESTION I AM JUST LIKE EXTREMLY DUMB

Alja [10]

Answer:

A: -720

Step-by-step explanation:

6 0

3 years ago

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Find the exact distance between the line 6x-y=3 and the point (6,2). Show your work. Explain your answer.

Serggg [28]

Answer:

The distance of point ( 6 , 2 ) from line 6 x - y = 3 is $\frac{31}{\sqrt{37} }$ unit .

Step-by-step explanation:

Given as :

The equation of line is 6 x - y = 3

And The points is ( 6 , 2 )

Let The distance between the line and points is d unit

So, The distance of point from the line = $\frac{\begin{vmatrix}ax & +b y & + c\end{vmatrix}}{\sqrt{a^{2}+b^{2}}}$

Or, d = $\frac{\begin{vmatrix}6\times x & +(-1)\times y & + (-3)\end{vmatrix}}{\sqrt{6^{2}+(-1)^{2}}}$

Or, d = $\frac{\begin{vmatrix}6\times 6 & +(-1)\times 2 & + (-3)\end{vmatrix}}{\sqrt{6^{2}+(-1)^{2}}}$

Or, d = $\frac{36 - 2 - 3}{\sqrt{37} }$

∴ d = $\frac{31}{\sqrt{37} }$ unit

Hence The distance of point ( 6 , 2 ) from line 6 x - y = 3 is $\frac{31}{\sqrt{37} }$ unit . Answer

4 0

3 years ago

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Tiles (6" by 6") can be installed at the rate of 50 per worker hour. The floor of a large lobby area (80’ by 40’) is to be cover

RideAnS [48]

Answer:

Step-by-step explanation:

Tiles (6" by 6") can be installed at the rate of 50 per worker hour. Since the tile is a square, its area is

L^2 = 6^2 = 36 inches square

So in an hour, a worker installs 50 tiles whose area is 36 inches square. Total square meters installed per hour will be 50 × 36 = 1800 inches square per hour.

If three workers are assigned to this task, their work rate will be

1800 × 3 = 5400 inches square per hour.

The floor of a large lobby area (80’ by 40’) is to be covered with these tiles. We would convert from feet to inches.

1 foot = 12 inches

80 feet = 80 × 12 = 960 inches

40 feet = 40 × 12 = 480 inches

Area of the lobby = 90 × 480 = 460800 inches square.

If the 3 workers install 5400 inches square in 1 hour,

Then then they will install 460800 inches square in

460800/5400 = 85.33 hours

Converting to the nearest whole day, it becomes

85.33/24 = 3.55

Approximately 4 days

4 0

3 years ago

I don't understand it

EleoNora [17]

You have forgot to attach the picture

4 0

3 years ago

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Which of the following is the surface area of the right cylinder below?

Snowcat [4.5K]

Answer: Option A.

Step-by-step explanation:

You need to use this formula for calculate the surface area of the right cylinder:

$SA=2\pi r^2+2\pi rh$

Where "r" is the radius and "h" is the height.

You can identify in the figure that:

$r=8units\\h=3units$

Knowing this, you can substitute these values into the formula $SA=2\pi r^2+2\pi rh$ , therefore you get that the surface area of this right cylinder is:

$SA=2\pi (8units)^2+2\pi (8units)(3units)$

$SA=176\pi\ units^2$

8 0

3 years ago