Answer:thre
Step-by-step explanation:
The Cartesian equivalent of the polar coordinates (r, theta) is
(r cos t, r sin t), where t = theta.
So, (2, 3pi/4) becomes
(2 cos(3pi/4), 2 sin(3pi/4))
(2 • -sqrt{2}/2, 2 • sqrt{2}/2)
Answer: (-sqrt{2}, sqrt{2})
Done.
Note: sqrt = square root for short.
Answer:
C
Step-by-step explanation:
Given
+
← factor the denominator of first fraction
=
+ 
Multiply the numerator/ denominator of second fraction by (x + 2)
=
+ 
The denominators are now common, so add the numerators leaving the denominator, that is
= 
=
→ with numerator 4x + 6 → C
The density of the gold is 772.8 kilograms\cubic meters