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mr_godi [17]
3 years ago
10

Which expression is equivalent to cos 120°?

Mathematics
1 answer:
ryzh [129]3 years ago
4 0

Answer:

cos 120° = -1/2

Step-by-step explanation:

cos 120° =  (adjacent side) / (hypotenuse.

Here the adjacent side (the side next to the central angle in this 30-60-90 triangle) is -1.  Then the hypotenuse is 2 and the opposite side is √3.

Thus, cos 120° = -1/2

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Bharat types 20 words/min. How many words can he type in each length of time? a) 5 min b) 30 min c) 23 min
e-lub [12.9K]

Bharat can type words in lengths of time as 100 words, 600 words, and 460 words in 5 minutes, 30 minutes, and 23 minutes respectively.

<h3>What are Arithmetic operations?</h3>

Arithmetic operations can also be specified by subtracting, dividing, and multiplying built-in functions.

* Multiplication operation: Multiplies values on either side of the operator

For example 12×2 = 24

Bharat types 20 words per minute which are given in the question.

To determine the number of words can he type in each length of time

We have to multiply the time by his typing speed.

The number of words that can be typed by Bharat in 5 minutes :

⇒ 20 × 5

⇒ 100

The number of words that can be typed by Bharat in 30 minutes :

⇒ 20 × 30

⇒ 600

The number of words that can be typed by Bharat in 23 minutes :

⇒ 20 × 23

⇒ 460

Therefore, He can type words in lengths of time as 100 words, 600 words, and 460 words in 5 minutes, 30 minutes, and 23 minutes respectively.

Learn more about Arithmetic operations here:

brainly.com/question/25834626

#SPJ1

3 0
1 year ago
How would i do this and whats the answer
cricket20 [7]

Answer:

Since we can see that they are vertically opposite angles

so 33° = 2x +1°

2x =33°+1°

2x = 34°

Therefore x= 17°

5 0
2 years ago
Can someone please help me this is due in 10 mins
____ [38]
<h2>Answer: 250 Hamburgers sold</h2><h2>Step-by-step explanation:</h2><h2><u><em>x = hamburgers </em></u></h2><h2><u><em>y = cheeseburgers </em></u></h2><h2><u><em>x+y=434 </em></u></h2><h2><u><em>66 fewer cheeseburgers than hamburgers </em></u></h2><h2><u><em> </em></u></h2><h2><u><em>  </em></u></h2><h2><u><em>y = x - 66 </em></u></h2><h2><u><em>Substitute y into the first equation </em></u></h2><h2><u><em>x + (x-66) = 434 </em></u></h2><h2><u><em>2x = 434 + 66 </em></u></h2><h2><u><em>2x = 500 </em></u></h2><h2><u><em>x = 250 hamburgers sold</em></u></h2>
7 0
3 years ago
Help me plzzzzzzzzzzzzzzzz
Ksju [112]
B because it’s in the middle
8 0
2 years ago
Read 2 more answers
Pls help with number 3
Arturiano [62]

Answer:

about 17

Step-by-step explanation:

side 1 =4

side 2=4

side 3=4

one of the slanted lines is about equal to 2 and the other is also about 2

but i rounded it to 17 because a slanted line is longer than one that is straight across

5 0
1 year ago
Read 2 more answers
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