÷
Multiply
by the reciprocal of
, which is
=
×
=
We can simplify it further:
The greatest common factor here is
168
=
Given that the hyperbola has a center at (0,0), and its vertices and foci are on y-axis. This, the equation of the hyperbola is of the form
x²/a²-y²/b²=-1 (a>0, b>0)
In the equation, vertices are (0, +/-b) .
Thus,
b=60
Foci (0,+/-√(a²+b²))
thus
√(a²+60²)=65
hence solving for a²
a²=65²-60²
a²=625
a²=25²
hence the equation is:
x²/25²-y²/60²=-1
Step-by-step explanation:
the mean value is the sum of all values divided by how many values there are.
so,
(3 + -5 + 70 + -90 + -13) / 5 = -35/5 = -7
-7° F is the mean temperature of the 5 cities.
Correct - wrong percentage
-------------------- = ---------------
wrong 100
68 - 60 x
--------- = ----
60 100
8 x
---- = ----
<span>60 100
</span>800 60x
----- = ----
60 60
13.3% = x
10x2000= 20,000
2000
X 10
--------
0000
20000
