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Pachacha [2.7K]
3 years ago
11

A. 33.9 B. 57.7 C. 46.3 D. 85.7

Mathematics
1 answer:
CaHeK987 [17]3 years ago
7 0
The answer is A.  Here's how you get it.  Law of cosines here looks like this:
17^2 = 22^2 + 30^3 - [2(22)(30)cosA]; which simplifies to 289=484+900-1320(cosA). Doing that math gives you 289 = 1384 - 1320(cosA), and -1095 = -1320(cosA). Divide both sides by -1320 to get
.829545 = cos A.  Now use the inverse cosine on your calculator to get the missing angle measure.
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Simplify the expressions by combining like terms<br><br> 10r - 5r + 3r - 8r
Yuri [45]

Answer:

0

Step-by-step explanation:

Combine like terms, perform the operations with the coefficients of the variable, then write the variable.

10r - 5r + 3r - 8r

= 5r + 3r - 8r

= 8r - 8r

= 0

7 0
3 years ago
Read 2 more answers
What times what equals 152
erik [133]

x*x=152


x2=152

Take square root.

x=±√152

x=√238
or
x=−√238

7 0
3 years ago
What is 39 squared? A. 39 B. 1,482 C. 1,521 D. 78
iogann1982 [59]
Hey There!

The answer to you're question is C, because squared means to the power of two. So, 39 * 39 is 1,521.

Have A Brainly Day!
5 0
3 years ago
Need help with math problem if do get 5 star
11Alexandr11 [23.1K]
<h3><u>Answer</u><u>:</u></h3>

  • The point ( 22 , 23 ) lies in Ist quadrant

<h3><u>Explanation</u><u>:</u></h3>

The intersection of x and y axis divides the coordinate plane into 4 sections. These four sections are called quarrants. These quadrants are named as Roman numerals I, II, III and IV quadrant. The start with the top right corner and move in anti clockwise direction .

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3 0
2 years ago
I wanted to see if i was right, can I get a second opinion?
Arisa [49]
15 tickets = $105

105 ÷ 15 = 7
1 ticket costs $7.

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12 tickets cost $84

Answer: $84 (Answer C)
6 0
3 years ago
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