You set both expressions equal to each other, then solve for x. Your answer will be x=12
Answer:
Step-by-step explanation:
x + 2y = 14 ...............(1)
6x + 3y = 21 ..............(2)
Solve for x in equation 1
When x + 2y = 14
Therefore x = 14 - 2y ...................(3)
Now put equation 3 in equation 2 and solve
6x + 3y = 21 .............(2)
6(14 - 2y) + 3y = 21
Open the bracket and resolve
84 - 12y + 3y = 21
-9y + 84 =21
Now collect the like terms
-9y + 84 = 21
-9y = 21 - 84
-9y = -63
Divide through by -9 to get y
y = -63/-9
y = 7
Substitute for y in equation( 3 )to x
x= 14 - 2y............(3)
So, x = 14 - 2(7)
x = 14 - 14
x = 0.
Therefore x = 0 and y = 7
Check: From equation (1)
x + 2y = 14
Now, put x = 0 and y = -2
Therefore, 0 +2(7) =14
0 +14 = 14
Answer:
The radius is 7.23units
Step-by-step explanation:
Check image below for solution
Answer:
SA = 7.97 km
SB = 31.3 km
Step-by-step explanation:
Draw a picture of the triangle formed by the points A, B, and S.
∠SAB = 137°, and ∠ABS = 10°. Therefore, ∠ASB = 33°.
Using law of sines:
25 / sin 33° = x / sin 10°
x = 7.97
25 / sin 33° = y / sin 137°
y = 31.3
Round as needed.
