Answer:
3.8E8
Step-by-step explanation:
We want to rewrite 380,000,000 in the form x.xE(n).
To do this, we move the decimal point 8 places to the left and mult. the result by E8: 3.8E8
The formula of the sum of the arithmetic sequence:
Substitute:
Answer:
1,728.
Answer:
-2/3(negative two over three)
Step-by-step explanation:
-1+1/3 we cross multiply,which will be-3+1/3 =2/3
dose that make sense???
Step-by-step explanation:
sec² x − 2 = 0
sec² x = 2
cos² x = ½
cos x = ±√½
x = π/4, 3π/4, 5π/4, 7π/4
To find x, we have to use the pythagorean theorem.
a^2 + b^2 = c^2.
In our problem,
a = 3
b = ?
c = 6.5
(3)^2 + b^2 = (6.5)^2
Simplify the left and right side.
9 + b^2 = 42.25.
Subtract 9 from each side
b^2 = 33.25.
Take the square root of each side
b = 5.8.
Multiply 5.8 by two becuase 5.8 is the radius and we are looking for the diameter
x = 11.6