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sineoko [7]
3 years ago
11

What is the arc length if θ = 2 pi over 3 and the radius is 4 cm?

Mathematics
2 answers:
kompoz [17]3 years ago
6 0

my answer is in the image above

lyudmila [28]3 years ago
3 0

Answer:

8 pi/3

Step-by-step explanation:

The arc length is equal to the radius times the angle ( given in radians)

s = r theta

s = 4 *(2 pi /3)

s = 8 pi/3

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3 1/2 + (-7) x (2 2/3 + 1 1/2) = ?
mixer [17]

Answer: 77/3 or 25 2/3

Step-by-step explanation:

1. Convert mixed numbers into improper fractions:

3 1/2 = 3*2+1/2 = 7/2

2 2/3 = 2*3+2/3 = 8/3

1 1/2 = 1*2+1 = 3/2

2. Calculate within parentheses

Multiply and divide from left to right

Add and subtract from left to right

6 0
2 years ago
Read 2 more answers
You and your brother are reading the same novel. You want to get ahead of him in the book, so you decide to read 303030 minutes
ddd [48]

You will read for 45 minutes if your brother reads for 15 minutes.

<em><u>Explanation</u></em>

You decide to read 30 minutes longer than your brother reads.

If your brother reads x number of minutes, then 30 minutes longer than x minutes means (x+30) minutes.

As the number of minutes you read is y , so the equation will be:  y= x+30

When your brother reads for 15 minutes, then we will just <u>plug x=15 into the above equation</u>. So.....

y=15+30= 45

So, you will read for 45 minutes if your brother reads for 15 minutes.

7 0
3 years ago
Read 2 more answers
Ellie's Bakery is having a grand opening sale. All pastries are being discounted by 25%. Let x represent the regular price of an
Sindrei [870]

a) The expression to find the sale price of pastry =  0.75 x

b)  The regular price of the pastry bought by Kimberly = $2.70

Step-by-step explanation:

Step 1 :

Let x be the regular price of the pastry in the bakery

Percentage of discount = 25%

Amount of discount  = 0.25 x

The expression to find the sale price of pastry = x - 0.25 x = 0.75 x

Step 2 :

Sale price of the pastry bought by Kimberly = $2.03 = 0.75 x

<u>To find the regular price</u>

0.75x = 2.03

x = \frac{2.03}{0.75} = 2.70

Regular price of the pastry bought by Kimberly = $2.70

Step 3 :

Answer :

a) The expression to find the sale price of pastry =  0.75 x

b) The regular price of the pastry bought by Kimberly = $2.70

8 0
3 years ago
Solve the following equation algebraically: Negative 16 = 16 x squared How many solutions does this equation have? Explain. a. N
Stella [2.4K]

Answer:

The correct answer is b.

Step-by-step explanation:

16 {x}^{2}  =  - 16

{x}^{2}  =  - 1

No real solutions.

5 0
2 years ago
Identify the x-intercept and y-intercept of the equation below.
Lady_Fox [76]
Divide by 21 to put the equation in intercept form.
  x/(21/9) + y/(-21/7) = 1
  x/(7/3) + y/(-3) = 1

The x-intercept is (7/3, 0)
The y-intercept is (0, -3)

The 3rd choice is appropriate.

8 0
3 years ago
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