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
Vlad [161]
2 years ago
14

If the angles of a triangle are (2y - 5)degrees, (y + 20)degrees, and (3y-5) degrees what are the values of the angles​

Mathematics
2 answers:
NNADVOKAT [17]2 years ago
8 0

Answer:

<h3>\boxed{ \boxed{ \bold{ \sf{51.68  \: , \: 48.34 \:,  \: 80.02}}}}</h3>

Step-by-step explanation:

Let's solve:

As we know that the sum of angles of traingle adds to 180°

\sf{2y - 5 + y + 20 + 3y - 5 = 180}

Collect like terms

⇒\sf{6y - 5 + 20 - 5 = 180}

⇒\sf{6y   + 15 - 5 = 180}

⇒\sf{6y + 10 = 180}

Move constant to right hand side and change it's sign

⇒\sf{6y = 180 - 10}

Calculate the difference

⇒\sf{6y = 170}

Divide both sides of the equation by 6

⇒\sf{ \frac{6y}{6}  =  \frac{170}{6} }

Calculate

⇒\sf{y = 28.34}

Now, let's replace the value:

⇒\sf{2y - 5 = 2 \times 28.34 - 5 = 51.68}

⇒\sf{y + 20 = 28.34  + 20 = 48.34}

⇒\sf{3y - 5 = 3 \times 28.34 - 5 = 80.02}

Hope I helped!

Best regards!!

Bas_tet [7]2 years ago
6 0

Answer:

51 2/3 , 48 1/3 and 80 degrees.

Step-by-step explanation:

The 3 angles add up to 180 degrees.

2y - 5 + y + 20 + 3y - 5 = 180

6y + 10 = 180

6y = 180 - 10

6y = 170

y = 170 / 6 = 28 1/3 degrees.

So the 3 angles are  2(28 1/3) - 5,   28 1/3 + 20 and 3(28 1/3) - 5.

You might be interested in
If the product of two numbers is positive then the two numbers must both be positive true or false
Vlada [557]
False, a negetive and negetinve both equal positive

3 0
2 years ago
2x + 1 = 9<br> is that the answer ?
Ronch [10]

Answer:

yes

Step-by-step explanation:

because 9-1=8/2 equals 4 so2x4+1=9

7 0
2 years ago
What is forty five percent of one-hundred forty five
BlackZzzverrR [31]

Answer:

65.25

Step-by-step explanation:

45% of 145 = 65.25

7 0
3 years ago
What is m∠A? Please explain how you got your answer ;;
Ierofanga [76]
M<E = 180 - 43 - 35 = 102
m<A = 180 - 18 - 102 = 60

answer
m<A = 60
3 0
2 years ago
Please please please help me with these. Please show work. Thank you if you answer
Ksju [112]
4. A<span>=<span><span><span><span>2π</span>r</span>h</span>+<span><span>2π</span><span>r2</span></span></span></span><span>=<span><span><span><span>2·π</span>·4</span>·7</span>+<span><span>2·π</span>·<span>42</span></span></span></span><span>≈<span>276.46015 = 276
5. </span></span>A<span>=<span><span><span><span>2π</span>r</span>h</span>+<span><span>2π</span><span>r2</span></span></span></span><span>=<span><span><span><span>2·π</span>·10</span>·9</span>+<span><span>2·π</span>·<span>102</span></span></span></span><span>≈<span>1193.80521 = 1193.81</span></span>
3 0
3 years ago
Read 2 more answers
Other questions:
  • Which expression is equivalent to -51 - (-60)?
    14·1 answer
  • Solve 7x/3 &lt; 2. <br><br> Please help !
    14·2 answers
  • Simplified ratio 0.4
    6·2 answers
  • Find the AOS for y = x^2 + 2x - 5
    7·1 answer
  • Multiple choices<br>Help me to finish this​
    5·1 answer
  • PLEASE HELP ME ASAP!!!! GIVING 20 POINTS AWAY!!
    9·1 answer
  • ANYONE GOOD AT MATH CAN PLEASE HELP ME???
    5·2 answers
  • At the Olympic Games, a runner won the 26.2 mile marathon race in 2 hr 4 min and 1 second. What was his average speed in mph and
    14·1 answer
  • Will mark brainly!! :)
    13·1 answer
  • Help me with this easy problem If you answer correctly you will get brainliest and I wll draw you something. whaterver you like!
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!