What is the approximate area of a circle with a radius of 13cm? A.40.8cm² B.530.7cm² C.784cm² D.2461.8cm²

Answers

Answer 1

Answer: It would be B (530.7) because if you do 3.14 x 13 x 13 (Or to the second power) Then you get 530.66, the round to the nearest tenths

Answer 2

Answer: the area of a circle can be found by the formula A=pi*r^2. Pi equals 3.14 so multiply that by 13^2. 13^2 equals 169. So 3.14 * 169 = 530.66 cm^2 and that rounded is B) 530.7cm^2

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Tom knows that in his school 10out of every 85 students are lefthanded. There are 391 students in Toms school. How many studentd in toms school are left handed

Answers

To do this, first divide 85 by 10

You get 8.5

Then, divide 391 by 8.5

You get 46

Therefore, 46 students are left-handed in Tom's school.

Hope this helped!

Someone help please.

Answers

Given:
Red = 1/3
Blue = 1/4
White = 5/12

1/3 + 1/4 + 5/12 ⇒ (1/3*4/4) + (1/4*3/3) + (5/12*1/1) ⇒ 4/12 + 3/12 + 5/12 = 12/12 = 1

Red: 4/12 = 0.33 ; Blue: 3/12 = 0.25 ; White: 5/12 = 0.42

Batch 1:
Red : 5.95 * 0.33 = 1.9635 ⇒ 2
Blue: 5.95 * 0.25 = 1.4875 ⇒ 1.5 or 1 1/2
White 2 1/2 given: 2.5 / 0.42 = 5.95 total

Batch 2:
Red: 9 * 0.33 = 2.97 ⇒ 3
Blue: 2 1/4 given: 2.25 / 0.25 = 9
White: 9 * 0.42 = 3.78 ⇒ 3 3/4

Batch 3;
Red: 3 1/3 ⇒ 10/3 ÷ 0.33 = 10.10
Blue: 10.10 * 0.25 = 2.525 ⇒ 2 1/2
White: 10.10 * 0.42 = 4.242 ⇒ 4 1/6

A baby elephant weighs 200 pounds at birth. Seven years later, the elephant's weight is 3,000 pounds. What is the rate of change of the weight of the elephant? A) 400 pounds per year B) 429 pounds per year C) 457 pounds per year D) 466 pounds per year

Answers

I believe A is correct, but im not completely sure.

On a coordinate grid, point P is at (5, 2) and point R is at (−3, −4). Points Q and S are a reflection of both points across the x-axis. What are the coordinates of Q and S?Q(−5, 2), S(3, −4)
Q(−5, −2), S(3, 4)
Q(5, −2), S(−3, 4)
Q(−5, 2), S(−3, 4)

Answers

Answer:

Q(5, −2), S(−3, 4)

Step-by-step explanation:

When we reflect accrox x-axis, that means we have to change y-coordinates to their opposite, from positive to negative, or from negative to positive.

So, in this case, the given points are

$P(5,2)\nR(-3,-4)$

If we reflect these points accros x-axis, they would be

$Q(5,-2)\nS(-3,4)$

Therefore, the right answer is the third choice.

i think it is Q(5,-2),S(-3,4)

True or false a composite number cannot have three factors

Answers

Composite numbers are non-prime numbers. The statement "A composite number cannot have three factors" is false.

What are composite numbers?

A composite number is a number that has more than two factors, therefore, numbers are not prime numbers.

As we know that a composite number may have multiple number factors, which means it may have factors that are more than three.

Hence, the statement "A composite number cannot have three factors" is false.

Learn more about Composite Numbers:

brainly.com/question/19312484

F A L S E its false composite numbers 2 factors: 1 and itself

Calculate the interest earned on a savings account with 660.00 that is invested at 3.5% annual simple interest for 5 years ?a. $23.10
b. $26.40
c. $69.30
d. $115.50

I am not sure of the answer can someone please DO NOT tell me the answer and explain how i would solve this ((: thank you

Answers

660.00 ( 1 + (0.35x5))

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