<span>x + 3y= -11 (1)
</span><span>-9y = 33 + 3x ---->3x + 9y = -33 (2)
divide (2) equation by 2
</span>3x + 9y = -33
x + 3y = -11 (2')
and equation (1) is also x + 3y= -11 (1)
so
x + 3y= -11 (1)
x + 3y= -11 (2')
---------------------subtract
0 = 0
answer:
infinitely many solutions
<span>
</span>
Answer:
25%
Step-by-step explanation:
The average cost of the automobile in 2013 is $16,000
The present cost now is $20,000
Therefore the rate of increase between the two automobiles can be calculated as follows
= 20,000-16,000/16,000
= 4,000/16,000
= 0.25×100
= 25%
Hence the rate of increase is 25%
I have absolutely no idea i hate math so much
Answer:
arc QS = 95°
Step-by-step explanation:
the inscribed angle QSR is half the measure of its intercepted arc RQ , then
arc RQ = 2 × 95° = 190°
the sum of the arcs in a circle = 360° , then
arc QS = 360° - arc SR - arc RQ = 360° - 75° - 190° = 95°
Answer:
_________________________________________________________
1) The area, in terms of "π" , is: " <span>1π in.² " .
</span>__________________________________________________________
2) The area, using the approximation of "3.14" for "π" , is: " 3.14 in.² " .
__________________________________________________________
Explanation:
__________________________________________________________
The formula/equation of the area of a circle, "A":
_______________________________________
A = π * r² ;
in which π ≈ 3.14 ;
A = Area;
r = length of radius = 1 in. (given).
______________________________________
To find the area, take our known values, and plug them into the formula to find our answer:
_____________________________________
1) To solve for the Area, in terms of "π" ;
_________________________________________
A = π * r² = π *(1 in.) ² = π * 1 in² ;
A = 1π in.² .
____________________________________________________
2) To solve for Area, using the approximation of "3.14" for "π" :
___________________________________________________
A = π * r² ;
A ≈ (3.14) * (1 in.)² = (3.14) * (1²) * (in.²) ;
= (3.14)*(1)*(in.²) ;
_____________________________________________________
A ≈ 3.14 in.²
_____________________________________________________
