A piano teacher charges students $20.25 each month, plus $5.25 per hour for lessons.
2 answers:
Answer:
99$
Step-by-step explanation:
you take the 5.25$ per hour and multiply it by the 15 hours, and then you add the 20.25$ per month
Answer:
suppose the number of 2 hours lessons are x and 1 hour lessons are y; thus,
2x+y=25
50x+30y=690
to get the values of x and y we solve the quadratic equation given;
from the top equation:
y=25-2x.......i
substituting i in our second equation we get:
50x+30(25-2x)=690
50x+750-60x=690
-10x=-60
thus;
x=6
hence we conclude that the number of 2 hours classes are 6 hours
Step-by-step explanation:
You might be interested in
Answer:
thw abswer os tywentr yaxel
Step-by-step explanation:
The value of y when x is 8 is b. 2/3
Hello,
Vertex=(-2,5)
x=0==>y=-3(0+2)²+5=-7
Your thinking of the number 69
X-5y=-21
x=-21+5y
-6(-21+5y)+4y=10
126+-30y+4y=10
126+-26y=10
-26y=-116
y=4.4615
x=1.3076
