Answer:
An expression =
The area of San Bernardino County is 19,683 square miles.
Step-by-step explanation:
The are of San Bernardino County is about 3 to the 9 power square miles.
Here 3 to the 9 power means " base 3 and the exponent is 9"
=
This means we have to multiply 3 itself by 9 times.
= 3.3.3.3.3.3.3.3.3
= 9.9.9.9.3
= 81.81.3
= 6561.3
= 19,683 square miles
The area of San Bernardino County is 19,683 square miles.
Mischa wrote the quadratic equation 0 = –x2 + 4x – 7 in standard form
The standard form of quadratic equation is
When y=0 then the standard equation becomes
Now we compare the given equation with
and find the value of a, b,c
-x^2 can be written as -1x^2
a= -1 , b=4 and c=-7
The value of c is -7