3 years ago

Some Geometry problems I need some help with!

Mathematics

1 answer:

drek231 [11]3 years ago

8 0

Answer:

When a 2-D circle is rotated around a line that it does not touch. What is the name of the resulting figure?

The answer is annulus

A sphere with radius 16 m is cut by a plane though it’s a great circle. What is the best description of the cross section that is shown?

B. A circle with radius 16 m

You might be interested in

Allan bought a rug shaped as a semicircle that has a radius of 4 yards. What is the circumference of the rug? Plz answer

pentagon [3]

Circumference = 2 x pi x radius

2 x pi x 4 = 25.13 yards
(correct to 2 decimal places)

Hope this helps!!

3 0

2 years ago

The manager of a warehouse would like to know how many errors are made when a product's serial number is read by a bar-code read

Bond [772]

Answer:

$(a)\ \bar x =20.5$

$(b)\ \sigma = 14.54$

Step-by-step explanation:

Given

$x: 36, 14, 21, 39, 11, 2$

Solving (a): The mean of the 6 samples.

This is calculated as:

$\bar x = \frac{\sum x}{n}$

So, we have:

$\bar x =\frac{36+ 14+ 21+ 39+ 11+ 2}{6}$

$\bar x =\frac{123}{6}$

$\bar x =20.5$

Solving (b): The sample standard deviation.

This is calculated using:

$\sigma = \sqrt{\frac{\sum(x - \bar x)^2}{n-1}}$

So, we have:

$\sigma = \sqrt{\frac{(36 - 20.5)^2 + (14 - 20.5)^2 + (21 - 20.5)^2 + (39 - 20.5)^2 + (11 - 20.5)^2 + (2 - 20.5)^2}{6-1}}$

$\sigma = \sqrt{\frac{1057.5}{5}}$

$\sigma = \sqrt{211.5}$

$\sigma = 14.54$

7 0

2 years ago

Gary is 61 1/8 inches tall. His friends Gino and Gilbert are 56 1/2 inches tall and 63 1/8 inches tall. What’s the average heigh

Step2247 [10]

61 1/8 + 56 4/8 + 63 1/8 = 180 6/8

<span>180 6/8 / 3 = 60 2/8 = 60 1/4 incbes</span>

8 0

2 years ago

Read 2 more answers

Price-club sells a 12-ounce box of crackers for $2.59 and Shop Mart sells 1-1/2 pound box of crackers for $4.68. What is the uni

katen-ka-za [31]

Unit price would be the price per ounce.

Divide the total cost by the number of ounces:

Price Club : 2.59 / 12 = $0.216 per ounce

Shop Mart: 1-1/2 pounds = 1.5 x 16 = 24 ounces.

4.68 / 24 = $0.195 per ounce.

7 0

2 years ago

Read 2 more answers

How many centimeters (cm) are in 1 inch?

ivolga24 [154]

8 0

2 years ago

Read 2 more answers