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
Sliva [168]
3 years ago
10

HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
Andrew [12]3 years ago
7 0
Answer:  x = 9.611 ;  or ;  x = 9  11/18 .
_________________________________________________
Explanation:
________________________________________________

All angles of any triangle must add up to 180 degrees.

So,  (10x - 4)  + (8x + 3) + 91 = 180 ;  Solve for "x" ; 
___________________________________________
    10x - 4 + 8x + 3 + 81 = 180 ;

Combine the "like terms" on the left-hand side of the equation:
___________________________________________
      +10x + 8x = 18x ;
        
       - 4 + 3 + 8 = 7 ;
____________________________
          18x  +  7 = 180 ;
___________________________________________
   Subtract  "7" from each side of the equation:
___________________________________________
         18x + 7 - 7 = 180 - 7 ;
___________________________________________
to get:  
  
         18x  = 173 ; 
_________________________________
Divide EACH side of the equation by "18" ; to isolate "x" on one side of the equation;  and to solve for "x" ; 
_________________________________
         18x / 18  = 173 / 18 ;
_________________________________
                   x = 9.6111111111111111....
_____________________________________
  
Write as:  9.611 ;  or;   9  11/18.
____________________________________



You might be interested in
What is r in this equation? <br>πr^2=42π
kupik [55]
R in this equation refers to the radius

{\pi r}^{2}  = 42\pi \\  {r}^{2}  =  \frac{42\pi}{\pi}  \\ r =  \sqrt{42 } \\ r = 6.480740698
4 0
3 years ago
NEED HELP!!!!!!!!!!!!!!!!!!!!FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! kind like..........RIGHT
Pepsi [2]
The formula for the radius is

\sqrt{ \frac{a}{\pi} }
so the answer would be 6 inches
7 0
3 years ago
Read 2 more answers
The system of equations is graphed on the coordinate plane. y=−12x−1y=14x−4 A graph with a blue line passing through coordinates
Anika [276]
We have that

 case 1)
<span>system of equations is
</span><span>y=−12x−1
y=14x−4

using a graph tool
see the attached figure

the solution of the system  is the point (0.115,-2.385)

case 2)
</span>system of equations is
<span>blue line passing through coordinates A (0, -4) and B (4, -3)
</span><span>red line passing through coordinates   C(0, -1) and  D (4, -3)

</span>using a graph tool
see the attached figure

the solution of the system  is the point (4,-3)<span>

</span>

8 0
3 years ago
Find an equation for the nth term of the arithmetic sequence.
vekshin1
The answer is the second answer choice, an = -13 + 5(n - 1)
5 0
3 years ago
Read 2 more answers
QUESTION 16<br> What is the absolute value of -72?
11Alexandr11 [23.1K]

The absolute value of -72 is 72.

Absolute value is essentially just making the number given positive.

If the given number is already positive then the absolute value is the same as the original number

Hope this helped!

~Just a girl in love with Shawn Mendes

3 0
3 years ago
Read 2 more answers
Other questions:
  • Melissa frosted some cupcakes in the morning for a party. the table shows the total number of cupcakes frosted after she starts
    14·1 answer
  • Need help. Every equation I’ve thought of ends up not working out.
    11·1 answer
  • What is the equation of the following line? (0,0) (2,-8)
    15·2 answers
  • In a class 30 of students, 19 play an instrument and 10 play a sport. There are 8
    14·1 answer
  • A bird sanctuary initially contains 1500 birds. Each year, 15% of the birds fly away, so the sanctuary is restocked with 60 new
    11·1 answer
  • What is the area of the trapezoid?<br><br> 6 on top 8 in middle and 16 on bottum
    6·1 answer
  • The vertex of a figure is located at (1, 3). The figure is rotated and the image of vertex is located at (-3, 1) Which of these
    9·1 answer
  • Which inequality is NOT true when x= -2?
    8·1 answer
  • The sum of the ages of two sisters is 36. The younger sister is 6 more than a fifth of the older sister's age. How old is each s
    7·1 answer
  • Amelia played 8 games of cards with her grandpa. Her cousin played 4 times as many games as Amelia played. How many games did he
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!