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2 years ago

Evaluate the following expression. y + 9 when y = 12

Mathematics

2 answers:

tino4ka555 [31]2 years ago

5 0

Answer:

Step-by-step explanation:

y+9 = ?

y=12

12+9=21

makvit [3.9K]2 years ago

4 0

Answer:

Step-by-step explanation:

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Given that secant theta = Negative StartFraction 37 Over 12 EndFraction, what is the value of cotangent theta, for StartFraction

Iteru [2.4K]

$cot\theta$ $=\frac{12}{35}$

Step-by-step explanation:

$sec\theta =\frac{37}{12}$

⇔ $\frac{1}{cos \theta} =\frac{37}{12}$

⇔ $cos \theta = \frac{12}{37}$

we know that

$sin \theta = \sqrt{1-cos^2\theta}$

$sin\theta =\sqrt{1-(\frac{12}{37})^2 }$

$sin\theta=\sqrt{\frac{1225}{1369} }$

$sin\theta = \frac{35}{37}$

Therefore $cot\theta =\frac{cos\theta}{sin\theta}$ $=\frac{\frac{12}{37} }{\frac{35}{37} }$ $=\frac{12}{35}$ , for $\frac{\pi}{2}$

8 0

3 years ago

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PLS PLS HELP HELP ME ITS EASY ITS FREE PONTS LOL PLS PLS HELP HELP ME ITS EASY ITS FREE PONTS LOL PLS PLS HELP HELP ME ITS EASY

MaRussiya [10]

The answer is 41 , this is because the angles have to add up to 180 in total therefore 180-139 = 41

8 0

1 year ago

Read 2 more answers

How do you solve for the segment area in a circle?

Aleks04 [339]

The area of the entire sector of DEF = 60 / 360 * PI * radius^2
sector area = 1 / 6 * 3.14159265... * 20^2
sector area = 209.4395102393 

segment area = sector area - triangle DEF Area
triangle DEF Area = (1/2) * 20 * sine 60 * 20
triangle DEF Area = (1/2) * 0.86603 * 400
triangle DEF Area = (1/2) * 346.412 
triangle DEF Area = 173.206 

segment area = 209.4395102393 -173.206

segment area = 36.2335102393 
segment area = 36.23 m

Source:
http://www.1728.org/circsect.htm

6 0

2 years ago

Nvm i alr know the answer lol

Airida [17]

Answer:

ok lol

Step-by-step explanation:

5 0

3 years ago

What is TR(39)? pls help this is going to be on my exam...

musickatia [10]

Answer:

780

Step-by-step explanation:

So when you're adding consecutive numbers like this. 1+2+3...+39. You add 39 and 1. This is 40. 2+38 is 40. This is a pattern. Now, we do 40 multiplied by 39 and this will give you the number 1620. After this you would have to divide this product by 2. The answer will soon be 780.

3 0

2 years ago