Answer:
For the first one wouldnt it be like:
ht=10(r)+5
Step-by-step explanation:
Answer:
3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679
Step-by-step explanation:
The answer for this is the rules is x n y
Solve the equations
first one
take the sqrt of both sides
x-y=√71
add y to both sides
x=y+√71
sub y+√71 for x in other part
(y+√71)²+y²=59
y²+2y√71+71+y²=59
2y²+2y√71+71=59
minus 59 both sides
2y²+2y√71+12=0
factor out 2
2(y²+y√71+6)=0
use quadratic equation or something
y=

and
sub those for x
x=y+√71
note: √71=(2√71)/2
x=

,
or
x=

,
xy=

times

or

times

the result is -6 both times
xy=-6