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2 years ago

A circle has a radius of 4.2 cm.

Mathematics

1 answer:

patriot [66]2 years ago

8 0

Step-by-step explanation:

r=4.2

cicumference of circle =2Πr=2×3.14×4.2=26.3

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Name the operation the should be done first in this expression: 10 - (3 + 4)

Maksim231197 [3]

Answer:

$Parenthesis$

Step-by-step explanation:

<u>To figure this question out, you must follow the rule:</u>

Parenthesis

Exponent

Multiply

Divide

Addition

Subtraction

As you can see, the first operation in PEMDAS is Parenthesis.

Meaning the first thing you do is the numbers in parenthesis

7 0

2 years ago

Read 2 more answers

Are 3x²y and -8xy² like terms? How do you know?

julsineya [31]

Answer:

No.

Step-by-step explanation:

Since 3x²y has an x² and -8xy² has a y², they are not like terms. Since they are different terms, you cannot add them together.

7 0

3 years ago

Need an answer right away! Thank you for your time!

Mariana [72]

Answer:

4/13

Step-by-step explanation:

There are three face cards and four of each, plus four ace cards, for a total of 16. Thus, the probability of drawing an ace or a face card is 16/52, or 8/26, or 4/13.

7 0

2 years ago

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Which property of multiplication is shown by the equation ƒ • 8 = 8ƒ ?

mario62 [17]

Communitive property

7 0

2 years ago

A tourist starts off from town A and travels for 50km on a bearing of N80°W to town B. At town B, he continues for another 40km

bixtya [17]

Answer:

Town C is approximately 58.356 kilometers from town A.

Step-by-step explanation:

According to the statement, we understand that tourist travels from town A to town B (50 kilometers) at a direction of 80º west of north and from town B to town C (40 kilometers) at a direction of 20º east of north. Vectorially speaking, the resultant from town A to town C is described by the following formula:

$\vec r = (50\,km)\cdot (-\sin80^{\circ},\cos 80^{\circ})+(40\,km)\cdot (\sin 20^{\circ}, \cos 20^{\circ})$

$\vec r = (-35.560,46.270)\,[km]$

The distance from town A to town C is the magnitude of vector reported above, which is now calculated by Pythagorean Theorem:

$\|\vec r\| = \sqrt{(-35.560\,km)^{2}+(46.270\,km)^{2}}$

$\|\vec r\| \approx 58.356\,km$

Town C is approximately 58.356 kilometers from town A.

3 0

3 years ago