Which equations are correct?

Mathematics

1 answer:

mote1985 [20]3 years ago

3 0

5y4(2y5) = 10y9 CORRECT
5x3(6x4) = 30x7 CORRECT
3b3(-2b4) = 6b12 INCORRECT
4c4(3c2) = 12c8 INCORRECT

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Part a how many inches would a point on the outer edge of the large gear travel in a 150º rotation?

Rasek [7]

Approximately 20.47 inches

<h3>How to calculate the value?</h3>

given large central gear radius r = 4 inches.

small central gear radius = 2 inches.

if large gear travel in a 150º rotation distance travelled by large gear is

$\frac{150 {}^{0} }{360 {}^{0} } \times 2 \times \pi \times 4 \\ \frac{10}{3} \times \pi \\ 10.47 \: inches$

so, distance travelled by outer edge is 10.47 inches.

Learn more about gear transmission,refer

brainly.com/question/3926797

#SPJ4

Disclaimer : This question was incomplete in potal.Here is the complete question

Question: The gear is one of the oldest mechanical devices. It has been used since ancient times for its ability to increase or decrease rotational velocity. When one gear turns another, the outer portions of the gears are turning at the same linear speed. However, when one gear is smaller or larger than the other, the speed of rotation will be different for each gear.

Let’s look at an application of gears that you’ve seen before. On a bicycle, the pedals are attached to a large gear at the center of the bike, and a chain connects the large gear to a small gear attached to the rear wheel. The chain does not change the speed of rotation; it serves only to separate the centers of rotation.

Consider a bicycle where the large central gear has a radius of 4 inches and the small back gear has a radius of 2 inches.

Part A : How many inches would a point on the outer edge of the large gear travel in a 150º rotation?

3 0

2 years ago

Dani says she is thinking of a secret number. As a clue, she says the number is the least whole number that has three different

pychu [463]

Answer:

30 = 2 x 3 x 5

Step-by-step explanation:

The secret number is the least whole number that has three different prime factors. Since, this is the least whole number it should have the 3 smallest prime numbers as its factors.

The 3 smallest prime numbers are: 2, 3 and 5

The number that will have 2, 3 and 5 as its only factors will be the least whole number with 3 different prime factors.

So, the secret number must be = 2 x 3 x 5 = 30

7 0

3 years ago

I need help finding the reference angle theta prime

MakcuM [25]

Answer:

see the attachment for the angle plots

Step-by-step explanation:

θ = 5.2 is a 4th-quadrant angle, shown with terminal ray "a" in the attached diagram.

θ' is the positive acute angle between the terminal ray of θ and the x-axis. It is shown in standard position using terminal ray "r" in the attached diagram. Its value is the difference between 5.2 radians and 2π ≈ 6.28 radians, about 1.08318531 radians. The diagram shows it rounded to 2 decimal places: 1.08 radians.