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2 years ago

A circle has a radius of 3 cm. What is its: a. Diameter? b. Area? c. Circumference?

Mathematics

2 answers:

larisa86 [58]2 years ago

7 0

Answer:

Its B

Step-by-step explanation:

Virty [35]2 years ago

7 0

B- area is the correct answer

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1 2/5 as a improper friction

Oksanka [162]

Answer:

7/5

Step-by-step explanation:

8 0

3 years ago

Is 3(x + 1)2 = (3x + 3)2 an identity? Explain and show your reasoning.

Scilla [17]

Answer:

YES

Step-by-step explanation:

The equation, $3(x + 1)2 = (3x + 3)2$ , would be an identity if the equation remains true regardless of the value of x we choose to plug in into the equation.

Let's find out if we would always get a true statement using different value of x.

✍️Substituting x = 1 into the equation:

$3(x + 1)2 = (3x + 3)2$

$3(1 + 1)2 = (3(1) + 3)2$

$3(2)2 = (3 + 3)2$

$12 = 12$ (TRUE)

✍️Substituting x = 2 into the equation:

$3(x + 1)2 = (3x + 3)2$

$3(2 + 1)2 = (3(2) + 3)2$

$3(3)2 = (6 + 3)2$

$18 = 18$ (TRUE)

✍️Substituting x = 3 into the equation:

$3(x + 1)2 = (3x + 3)2$

$3(3 + 1)2 = (3(3) + 3)2$

$3(4)2 = (9 + 3)2$

$24 = 24$ (TRUE)

Therefore, we can conclude that the equation, $3(x + 1)2 = (3x + 3)2$ , is an identity.

8 0

3 years ago

There are 18 women and 20 men in a room. Of the women, 10 are older than 35 years old. Of the men, 9 are older than 35 years old

Vinvika [58]

Answer: 50%

Step 1 add 18+20 = 38

Step 2 add 10+9= 19

Step 3 divide 19 by 38 = 2

So if would be half which is equal to 50%

7 0

3 years ago

What type of symmetry does a regular pentagon have

solong [7]

Just a regular pentagon has 5 sides. and also has 5 lines of symmetry.

So if a shape has 7 sides it will have 7 lines of symmetry.

Its always going to be the same number.

plz mark me as brainliest :)

8 0

3 years ago

Translate the description as an algebraic expression:

charle [14.2K]

Answer:

13/20p

Step-by-step explanation:

Here, we want to write an expression from the given statement

We start from the product of 20 and p

Mathematically. that is 20 * p = 20p

Now to find the ratio, we simply place 12 over the product

We have this as;

13/20p

5 0

3 years ago