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
PilotLPTM [1.2K]
3 years ago
10

Please help with 3. 4. 5.

Mathematics
1 answer:
Eddi Din [679]3 years ago
4 0
3.
\text{The Triangle Sum Theorem:}\\m\angle A+m\angle B+m\angle C=180^o
x+2x-1+3x+1=180\\6x=180\ \ \ |:6\\x=30
x^o=30^o\\(3x+1)^o=(3\cdot30+1)^o=91^o\\(2x-1)^o=(2\cdot30-1)^o=59^o
4.
r-6+3r-3+5r=180\\9r-9=180\ \ \ |+9\\9r=189\ \ \ |:9\\r=21
(r-6)^o=(21-6)^o=15^o\\(3r-3)^o=(3\cdot21-3)^o=60^o\\(5r)^o=(5\cdot21)^o=105^o
5.
\text{The Exterior Angle Theorem:}\\m\angle CAB+m\angle ABC=m\angle DCB
2g+9g=110\\11g=110\ \ \ |:11\\g=10
m\angle A=2\cdot10^o=20^o\\m\angle ACB=180^o-110^o=70^o\\m\angle B=9\cdot10^o=90^o
You might be interested in
Solving x+ 8 = –3 gives:<br> (i) x = 11<br> (ii) x = 12<br> (iii) x = –11 <br> (iv) x = –12
olchik [2.2K]

Answer:

x+8=-3 gives

x=-11 is the required value

8 0
3 years ago
Read 2 more answers
X+17= -12<br><br> Please ASAP!
sdas [7]

Answer:

x=-29

Step-by-step explanation:

Minus 17 from both sides.

So x=-29

8 0
3 years ago
Read 2 more answers
Mrs. James displayed the factor tree at the right complete the factor tree to find the number that has prime factorization of 2
Taya2010 [7]
Download the guath math app it will help you with all your math work
4 0
3 years ago
Read 2 more answers
You are starting your own business and decided to take out a simple interest loan for 10,000 from your local bank. The interest
MAVERICK [17]
I think it’s 51.6% because 8.3% interest at the rate of 6 years is just 8.3 multiplied by 6 which is 51.6
7 0
2 years ago
Carol Ann buys a TV at 70% off the original price. If she pays $120, what was the original price of the TV?
Keith_Richards [23]
If the TV is 70% off, then that means she paid 30% of the original cost.  If 30% of the original cost  is $120, then...

30% * x = 120
.30x = 120
x = 120/.30
x = 400

The original cost was $400
5 0
3 years ago
Read 2 more answers
Other questions:
  • A salami is 2 3/5 inches long. The salami is cut into 1/8 inch thick slices.
    10·2 answers
  • Which equation can be used to solve for c? Triangle A B C is shown. Angle A C B is 90 degrees and angle A B C is 35 degrees. The
    5·2 answers
  • Jeremy rode his bicycle in a race. He averaged 15 mph and began the race 1 hour ahead of the other riders. The variable d repres
    9·2 answers
  • At exactly 2:00 pm, Sean the Snail crawls onto a meter stick at the 10 cm mark. If he reaches the 65 cm mark at exactly 2:10 pm,
    10·1 answer
  • If the four lines are extended, which system would have only one solution? On a coordinate plane, lines a and b would intersect.
    14·1 answer
  • Describe and correct the error in rewriting the equation
    12·1 answer
  • Which equation is true for all values of x and y shown in the tables below?
    5·1 answer
  • Do the following graphs represent a mathematical function? If not, explain why.
    13·2 answers
  • An exponential decay function represents a quantity that has a decreasing halving time true or false
    8·1 answer
  • Can someone help pls :)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!