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Rasek [7]
1 year ago
12

Find the standard equation for the circle having the given center and radius.

Mathematics
1 answer:
RoseWind [281]1 year ago
7 0

\textit{equation of a circle}\\\\ (x- h)^2+(y- k)^2= r^2 \hspace{5em}\stackrel{center}{(\underset{0}{h}~~,~~\underset{0}{k})}\qquad \stackrel{radius}{\underset{7}{r}} \\\\[-0.35em] ~\dotfill\\\\ ( ~~ x - 0 ~~ )^2 ~~ + ~~ ( ~~ y-0 ~~ )^2~~ = ~~7^2\implies x^2+y^2=49

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Perform the indicated operation. PLEASEE HELPP HURRYY!! (3 + i) + (5 + 7i) = A) -2 + 6i B) 2 + i C) 8 + 6i D) 8 + 8i
Dovator [93]

Answer:

\boxed{ \bold{  \huge{ \boxed{ \sf{8 + 8i}}}}}

Option D is the correct option.

Step-by-step explanation:

\sf{(3 + i) + (5 + 7i)}

When there is a ( + ) in front of an expression in parentheses , there is no need to change the sign.

That means, the expression remains the same.

Just remove the unnecessary parentheses

⇒\sf{3 + i + 5 + 7i}

Collect like terms and simplify

⇒\sf{3 + 5 + i + 7i}

⇒\sf{8 + 8i}

Hope I helped!

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7 0
2 years ago
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JulijaS [17]
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7 0
3 years ago
An item is priced at $13.24. If the sales tax is 5%, what does the item cost including sales tax?
cestrela7 [59]
B would be correct cause 5 percent would be .66
8 0
3 years ago
Read 2 more answers
Arianna earns a weekly salary of $400 plus a 6.5% commission on sales at a gift shop. How much would she make in a workweek if s
lilavasa [31]

Answer:

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Step-by-step explanation:

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6 0
2 years ago
Please help me pleasee
ryzh [129]

Answer:

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Step-by-step explanation:

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m∠ADC = 52° + 64° = 116°

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7 0
1 year ago
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