3 years ago

A marble was rolled down the ramp as shown in

Mathematics

1 answer:

maw [93]3 years ago

7 0

Answer:

it is b

Step-by-step explanation:

because it will follow the same direction it came from the begining.

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A cone has a surface area of 200 pi square inches. If the radius of the

Helen [10]

Answer:

$20\:\mathrm{in}$

Step-by-step explanation:

The lateral surface area of a cone is given by $A=\pi r\ell$ , where $r$ is the radius of the base of the cone and $\ell$ is the cone's slant height.

Solving for $\ell$ :

$200\pi=10\pi\ell,\\\ell=\frac{200\pi}{100\pi}=\boxed{20\:\mathrm{in}}$

*Note: It is implied that the surface area of 200 pi square inches is lateral surface area and not total surface area, because it is impossible to obtain a total surface area of 200 pi with a radius of 10 inches.

5 0

3 years ago

Ling wants to determine the average distance she travels each day in her car. She records the odometer reading each morning for

barxatty [35]

To find an average or "mean" add all numbers together, then divide by total numbers added together.

10150+10211+10424+10769+10884+11155+11477=75070

75070 ÷ 7 = 10724.28571

(the average distance is the answer above)

5 0

3 years ago

Read 2 more answers

two unidentified flying discs are detected by a receiver, the angle of elevation from the receiver to each disc is 38.48 degrees

vivado [14]

Answer:

292.45 m

Step-by-step explanation:

Both disk are at an angle of 38.48°

From the image below we calculate as,

For disk B, direct distance is 1.296 km from receiver = 1296 m

Vertical height from ground will be = 1296 x sin38.48 = 806.42 m