1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
malfutka [58]
3 years ago
8

PLEASE HELP! THANKS! The measures, in degrees, of the 3 angles of a triangle are given by 2x +1, 3x - 3, and 9x. What is the mea

sure of the smallest angle? A.) 13 degrees B.) 23 degrees C.) 29 degrees D.) 40 degrees please show how to solve this I GIVE THANKS!!!
Mathematics
1 answer:
drek231 [11]3 years ago
7 0
So all of the internal angles of a triangle will add up to 180 degrees.  So if we add all of the expressions given and set them equal to 180, we can solve for x, then solve for each angle...

(2x + 1) + (3x - 3) + 9x = 180
2x + 3x + 9x + 1 - 3 = 180
14x - 2 = 180
14x = 182
x = 13

Now we can substitute 13 into each expression to find the value of each angle...

2x + 1 =
2(13) + 1 =
26 + 1 = 27 degrees

3x - 3 =
3(13) - 3 =
39 - 3 = 36 degrees

9x =
9(13) = 117 degrees

So the 3 angles are 27 degrees, 36 degrees, and 117 degrees.

The smallest is 27 degrees

** Note-- I don't see 27 degrees in the answer choices you gave, so I double checked my math (I didn't find any mistakes).  Please check to see that the question is written correctly (pay close attention to plus and minus signs).
You might be interested in
Which expression is equivalent to the given expression?
Studentka2010 [4]
Which expression is equivalent to the given expression?

15(12-x)

A. 15*12-x


hope this help
4 0
3 years ago
Peter spent half the money on his gift card and coffee and he loaded another $10 on the gift card how much was on the gift card
cestrela7 [59]

Answer:

$80 was on the gift card to begin with

Step-by-step explanation:

Let the initial money be x

Peter spent (1/2)*x

Peter added 10

<em>Before adding more money on the gift card Peter had x -(1/2)x left on the gift card which is (1/2)x</em>

<em>After loading more money Peter had (1/2)x + 10</em>

(1/2)x = 40 <em>(money spent by Peter)</em>

x/2 = 40

x = 80

6 0
3 years ago
If Alejandro walks 3 miles in 43 minutes, then how far will Alejandro walk in 93 minutes?
LiRa [457]

Answer:

he will walk about 8 miles

Step-by-step explanation:

4 0
2 years ago
Which matrix represents the system of equations shown below?
Leona [35]

Answer:

121-22

Step-by-step explanation:

7 0
3 years ago
I need help with 8-11....
MaRussiya [10]
8. Quadrants
9. Proportion
10. Proportionality
11. Dimensional analysis
8 0
3 years ago
Other questions:
  • I NEED HELP ON 15 AND 16 PLEASE HELP ME I DONT UNDERSTAND IT
    13·1 answer
  • 4 quarts of lemonade using 13 cup of sugar. Which expression could be used to determine the amount of sugar needed to make 1 qua
    14·1 answer
  • Your teacher is giving a test worth 100 points containing 40 questions. There are two point and four point questions on the tes.
    9·2 answers
  • Zeller, Inc., has 50,000 shares of stock outstanding. Zeller declares a dividend of $480,000. What is the dividend per share?
    15·1 answer
  • What is the correct answer to this multiple choice question? Please help!
    11·1 answer
  • Can you help me find the code<br><br><br><br> link/picture in the comments
    8·2 answers
  • 6-2x=6x-10x+14 what is the value of x
    11·2 answers
  • Is 83 - 11 = 72 true, false or an open sentence *<br><br><br><br>please help im almost done
    10·2 answers
  • Find the 40th term in the arithmetic sequence: 4,2,0,-2........
    6·1 answer
  • Look down<br> Also show your work <br><br> "as the teacher say
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!