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3 years ago

Four students spoke to the Parents Club for a total of 2/3 hour

Mathematics

1 answer:

meriva3 years ago

7 0

2/3 hour =2/3×60 min=40 min

2/3 hour=2/3×3600 seconds=2400seconds

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Please help me. i need answers asap. please correct answers

monitta

Answer:

1.) 6

2.) -1

3.) 36

4.) 1/3

5.) 90

Step-by-step explanation:

1.) -12/a

-12/a -> -12/2

2.) a+ (-b)

a+(-b) -> 2+(-3)

=-1

3.) 3a (12-2b)

3a(12-2b) -> 3(2) (12-2x3)

6(12-6)

6(6)

=36

4.) 2a-c/b

2a-c/b -> 2(2)-5/3

4-5/3

=1/3

5.) 3abc

3abc-> 3x2x3x5

=90

6 0

2 years ago

Find the measure of the central angle with an arc length equaling 29.21 and a circumference = 40.44

Dima020 [189]

measure of central angle is 4.607 radians with an arc length equaling 29.21 and a circumference = 40.44

Step-by-step explanation:

Arc length = 29.21

Circumference = 40.44

Central angle = ?

The formula used to find central angle is:

$s=r\theta$

where s = arc length, r= radius and Ф=central angle.

We need to find radius from circumference

$c=2\pi r\\r=\frac{c}{2\pi } \\Putting\,\,values:\\r=\frac{40.44}{2*3.14}\\r=6.43$

So, radius = 6.34

Now, finding central angle:

$s=r\theta\\29.21=6.34\,\,\theta\\\theta=\frac{29.21}{6.34}\\\theta=4.607\,\,radians$

So, measure of central angle is 4.607 radians with an arc length equaling 29.21 and a circumference = 40.44

Keywords: Central angle of circle

Learn more about Central angle of circle at:

#learnwithBrainly

5 0

3 years ago

I need help:

Lunna [17]

Answer:

8 green tshirts

Step-by-step explanation:

8 0

3 years ago

Lisa's store collects 5% sales tax on every item sold if if she caused if she collected $22. In sales tax what was the cost of t

Advocard [28]

Im assuming the question is asking: if she collected $22 in sales tax what was the cost of the items her store sold. you should make sure you type the question correctly otherwise it'll be hard to answer.

going with my assumption of what the question is, we want to find the total cost of all items her story sold. let that cost be c. since there is 5% sales tax on everything and we know the sales tax is worth $22,m we have:

5%(c) = 22
dividing both sides by 5% (or .05) gives:
c = $440

3 0

4 years ago

13 out of 27 sixth-grade students said they prefer Powerade to Gatorade. What percent voted for Powerade? What percent voted for

e-lub [12.9K]

Powerade : 48.1481 %
Gatorade : 51.8519 %

3 0

3 years ago