3 years ago

What is true about the complex number: -5-5i? check all that apply.

Mathematics

2 answers:

Elza [17]3 years ago

7 0

Answer:

The modulus is 5√2

It lies in quadrant 4

Step-by-step explanation:

Alternate answers

Simora [160]3 years ago

6 0

Answer:

It is c and d. If this helps you are welcome

Step-by-step explanation:

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Hey i need help this assignment is like 3 pages long

slavikrds [6]

Answer:

c=1.96

Step-by-step explanation:

2.1/c=1.5/1.4

2.1*1.4=1.5*c

2.94/1.5=1.5c/1.5

c=1.96

7 0

2 years ago

Pre-Calculus Help? Polar and Parametric Equations?

Paraphin [41]

$\bf x=rcos(\theta )\implies \cfrac{x}{cos(\theta )}=r\\\\
y=rsin(\theta )\implies \cfrac{y}{sin(\theta )}=r
\\\\
-------------------------------\\\\
r=3cos(\theta )\implies \cfrac{x}{cos(\theta )}=3cos(\theta )\implies x=3cos(\theta )cos(\theta )
\\\\\\
\boxed{x=3cos^2(\theta )}
\\\\\\
r=3cos(\theta )\implies \cfrac{y}{sin(\theta )}=3cos(\theta )\implies \boxed{y=3cos(\theta )sin(\theta )}$