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kotykmax [81]
3 years ago
15

Solve the equation for all real solutions. X^2 + 11z +9 = 5z Someone help plz ):

Mathematics
1 answer:
pantera1 [17]3 years ago
5 0

Answer:

z = -3

Step-by-step explanation:

Given

z^2 +11z+9 = 5z --- the correct equation

Required

Solve

Equate to 0

z^2 +11z-5z+9 = 0

z^2 +6z+9 = 0

Expand

z^2 +3z+3z+9 = 0

Factorize

z(z +3)+3(z+3) = 0

Factor out z + 3

(z +3)(z+3) = 0

Split

z + 3 =0 --- twice

z = -3

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3 years ago
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Sergio039 [100]

Answer:

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Step-by-step explanation:

The shaded area is the difference between the area of Circle B and the areas of Circle C and Circle O. That is, those white areas are subtracted from the area of Circle B to get the shaded area.

The formula for the area of a circle is

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3 years ago
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Eva8 [605]
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On a particular map, 1 inch represents an actual distance of 2.5 miles. the actual area of a lake is 12 square miles. find the a
Anton [14]
We have that
scale factor=1 in/2.5 miles
<span>the actual area of a lake is 12 square miles

</span>we know that
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the answer is
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4 years ago
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