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4 years ago

The circumference of a circle is 16 pi ft the radius is

Mathematics

2 answers:

Levart [38]4 years ago

8 0

Hi,

Circumference formula is:

2πr, where r is the radius of the circle. So:

2πr = 16π feet, therefore $r=\dfrac{16\pi}{2\pi}=8\ feet.$

Have you understood ?

Green eyes.

Katarina [22]4 years ago

3 0

Answer:8

Step-by-step explanation:16 divided by 2 comes up with an answer of 8

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Raffle tickets cost $6 for 5 tickets. What is the price of 1 ticket? How many tickets can you get for $90

Papessa [141]

Answer:

1 ticket is worth 1.2$

90$ gets you 75 tickets

Step-by-step explanation:

t=ticket(s)

6=5t

6/5=t

90/(1.2)=75

8 0

3 years ago

Read 2 more answers

"If two cards are drawn at random without replacement from a standard deck, find the probability that the second card is a face

PolarNik [594]

Answer:

C. $P(F|Q) = \dfrac{11}{51}$

Step-by-step explanation:

it is to be noted that the question is only asking for the probability of the 2nd card given that the first card was queen $(P(F|Q))$ , and not asking for the probability of 1st card to be queen and 2nd card to be faced card $P(Q\,\text{and}\,F)$

we can represent it in an expression:

$P(Q\,\text{and}\,F) = P(Q)P(F|Q)$

here P(Q) is the first event: Queen

and P(F|Q) is the second event: Faced card, given that the Queen is taken

--------------------------------

we only need to know what is P(F|Q), and that can be found directly found:

let's start with P(Q), what is the probability that the first card is a Queen? Well, there are 4 queens in a standard deck of 52 cards, so the probability should be:

$P(Q) = \dfrac{4}{52}$

now we have taken our queen, but we haven't put it back in the deck. so the amount of cards in the deck now are 51.

let's calculate P(F|Q),now that one queen is taken out, what is the probability of the next card to be a faced card? Well, in a standard deck there are 12 faced cards, but in our case one queen is already taken out, so there are 11 faced cards in our deck!

$P(F|Q) = \dfrac{11}{51}$

and this our answer!

8 0

3 years ago

Find a sum equivalent to the product 6(y + x)

bearhunter [10]

6(y+x)=6y+6x
Hope this help! :)

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3 years ago

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If A is an n× n matrix, then det A = det AT . Verify this theorem for 2 × 2 matrices.

Bond [772]

Answer:

Verified

Step-by-step explanation:

Let A matrix be in the form of

$\left[\begin{array}{cc}a&b\\c&d\end{array}\right]$

Then det(A) = ad - bc

Matrix A transposed would be in the form of:

$\left[\begin{array}{cc}a&c\\b&d\end{array}\right]$

Where we can also calculate its determinant:

det(AT) = ad - bc = det(A)

So the determinant of the nxn matrix is the same as its transposed version for 2x2 matrices

4 0

3 years ago

Find the distance between w=1+2i and z=3-i

AlladinOne [14]

Answer:

The distance between w=1+2i and z=3-i is 3.61

Step-by-step explanation:

We need to find the distance between w=1+2i and z=3-i

The formula used is: $Distance=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

We have $x_1=1, y_1=2, x_2=3, y_2=1$

We will use only real numbers and not i for calculating distance.

Putting values and finding distance

$Distance=\sqrt{(x_1-x_2)^2+(y_1-y_2)^2}\\Distance=\sqrt{(1-3)^2+(-1-2)^2} \\Distance=\sqrt{(-2)^2+(-3)^2} \\Distance=\sqrt{4+9} \\Distance=\sqrt{13}\\Distance=3.61$

So, The distance between w=1+2i and z=3-i is 3.61

3 0

3 years ago

The circumference of a circle is 16 pi ft the radius is​

The circumference of a circle is 16 pi ft the radius is