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marissa [1.9K]
4 years ago
10

Which expression is equivalent to cos 150°?

Mathematics
1 answer:
Andreas93 [3]4 years ago
3 0
cos150^o=cos(150^o-360^o)=cos(-210^o)


Answer:D
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I NEED HELP VOLUME OF SPHERES 5 QUESTIONS ASAP!!!!
Alexeev081 [22]

Answer:

1.)4188.79

2.) 7238.23

3.)1.02

4.)4189

5.)170 cm³

Step-by-step explanation:

1.) 4πr2 * 5

2.) 4πr2 * 12

3.) V = 4/3(PI*r3). *4.5

4.) V = 4/3 π r ^3 * 10

5.) Given:

Cylindrical container: height = 18 cm ; diameter = 6 cm.

3 balls each have a radius of 3 cm.

Volume of a cylinder = π r² h

V = 3.14 * (3cm)² * 18 cm

V = 508.68 cm³

Volume of rubber ball = 4/3  π r³

V = 4/3 * 3.14 * (3cm)³

V = 113.04 cm³

113.04 cm³  * 3 balls = 339.12 cm³

508.68 cm³ - 339.12 cm³ = 169.56 cm³ or 170 cm³

There is 170 cm³ free space in the container.

6 0
3 years ago
1. Michelle purchased 25 audio files in January. In February she
san4es73 [151]

<u>Answer:</u>

Michelle purchased 25 audio files in January. The percent increase is 60%

<u>Solution: </u>

Given Data:

Michelle purchases = 25 audio files in January

Again purchased = 40 audio files in February

We need to find the percent increase for the given data.

Step 1:

Use the formula for percent change ,

=\frac{\text { amount of change }}{\text { original amount. }}

Step 2:

First we find the amount of change from the question.

Amount of change = 40 – 25  

By subtracting, we get 15.

Step 3:

substitute the values in formula we get,

Formula percent change = \frac{15}{25} = 0.6  

Percent = 0.6 \times 100 = 60 %.

Result:

Michelle purchased 25 audio files in January. And In February she purchased 40 audio files. Hence the percent increase is 60%.

8 0
3 years ago
The quotient of 6 more than twice the number
nadezda [96]

if you're asking for the written out problem in an equation for it's 6 divided by 12


4 0
3 years ago
Which number has the least value? A) 1 /4 B) 22% C) 0.24 D) 1 /5
Ipatiy [6.2K]

Answer:

1/5

Step-by-step explanation:

1/4 = 0.25

22% = 0.22

0.24 = 0.24

1/5 = 0.2

3 0
4 years ago
Fifth time I've asked for help on this question! You just keep giving me spam! HELP ASAP!!! Please give a step-by-step explanati
Sveta_85 [38]

For all the dogs: you have 2.65+2.46+3.67+2.91 = 11.69%

Now, the probability of getting a chihuahua would be 3.44/11.69=0.2942= 24.92

Step-by-step explanation:

there ya go

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3 years ago
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