Answer: See below
Step-by-step explanation:
Isolate x for x-2y+2z=9
3x=9+2y
....(1)
Substitute (1) into the 2nd equation
7y=-3
y=-3/7
Substitute y=-3/7
Isolate z by substituting it
For x =9+2y/3 substitute z=59/21 and y=-3/7
Answer:
23 is 31/100
Step-by-step explanation:
not sure about the rest sorry :(
Let x be the original price.
Discount percentage = 40%
Price after discount = $3
So, x - 
= 3
= 3
= 3
x = 5
Hence, the equation that would allow us to find the original price is 0.6x = 3.
Answer:
it would be 2
Step-by-step explanation:
In degree measure, the angles pi/3,pi/4 , and pi/2 are respectively: A. 60, 45, 90 B. 30, 45, 90 C. 45, 60, 90 D. 60, 30, 90 (al
aev [14]
<span>Solution :-
The value of pi expressed in radians and its equivalent degree is = 180 degree
Hence, the value of pi/3 = 180/ 3 = 60 deg
similarly, the value of pi/3 = 180/4= 45 deg
similarly, the value of pi/2= 180/2= 90 deg
Ans :-
The angles of pi/3, pi/4, pi/ 4 is = 60, 45, 90 degree respectively. Hence the right option is answer is A.</span>
