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algol13
3 years ago
12

The russian ruble coin had a radius of 10.25 mm. What is the circumference in terms of pi

Mathematics
1 answer:
Ronch [10]3 years ago
7 0
Try this solution:
Circumference=2*π*radius=2*π*10.25=20.5π (mm).
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Find the point(s) of intersection between the quadratic function y = x + 4x + 4 and the linear function y = 2x+4.​
Andrews [41]

Answer:

(0, 4)

Step-by-step explanation:

To find the intersection of two lines, we want to find the value when they equal each other. To do this, we want to set the equations equal to each other.

First, let's simplify y = x + 4x + 4 by combining the x's.

y = 5x + 4

Now let's set the equations equal to each other. Since they both equal y, we can set the opposite sides equal to each other.

5x + 4 = 2x + 4

Now you want to combine the terms.

[subtract 4] 5x = 2x

[subtract 2x] 3x = 0

Now you want to isolate the x.

[divide by 3] x = 0

Now we want to find y by plugging x = 0 back into the equations.

y = 5(0) + 4

[multiply] y = 0 + 4

[add] y = 4

Check this with the other equation.

y = 2(0) + 4

[multiply] y = 0 + 4

[add] y = 4

Your answer is correct!

(0, 4)

4 0
2 years ago
An amusement park rounds its total attendance for last year to 120,000 people.
Sedbober [7]

Answer:

B

Step-by-step explanation:

B Rounded to nearest ten thousand

7 0
1 year ago
Read 2 more answers
The area of a rectangle with 2 1/2 as the width and 10 feet as the length
Tanya [424]
The formula for the area of a rectangle is:
A=wl
w = width
l = length

First, we have to convert 2 \frac{1}{2} into an improper fraction, then into a number. The improper fraction would be \frac{5}{2}. Let's convert that into a decimal.
5/2=2.5

Let's multiply
2.5*10=25
The area of the rectangle would be 25 feet!
7 0
3 years ago
I need help with this question?​
Kazeer [188]
Your answer is 3 1/3
4 0
3 years ago
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You draw 4 cards from a deck of 52 cards with replacement. What are the probabilities of drawing a black card on each of your fo
lawyer [7]

Solution:

As, in a pack of cards, there are 26 black cards and 26 red cards.

Probability of an event = \frac{\text{total favorable outcome}}{\text{total possible outcome}}

Probability of drawing a black card from a pack of 52 cards = \frac{26}{52}=\frac{1}{2}

As each card drawn is replaced,Each black card draw is an independent with another black card draw.

Probabilities of drawing a black card on each of  four trial=

  \frac{1}{2}\times \frac{1}{2}\times \frac{1}{2}\times \frac{1}{2}=[\frac{1}{2}]^4

4 0
3 years ago
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