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anzhelika [568]
3 years ago
6

1a.) Write an expression that represents the area of a circle with a radius of 7 units? (1 point)

Mathematics
1 answer:
Tresset [83]3 years ago
6 0

Answer:

1. a.) A  = \pi r^{2} where the value of r = 7 units

  b.) A = \pi \times 7^{2}  = \pi \times 49 = 49\pi = 49\times 3.1414 = 153.93 units^2

Step-by-step explanation:

1.) a.) the area of a circle with a radius of 7 units

        is given by Area, A  = \pi r^{2} where the value of r = 7 units

    b)  \therefore   A = \pi \times 7^{2}  = \pi \times 49 = 49\pi = 49\times 3.1414 = 153.93 units^2

     

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Answer:

Solution given:

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g(x)=\frac{1}{x+10}

now

f(x)+g(x)=\frac{x-16}{x^2+6x-40}+\frac{1}{x+10}....(1)

now

factoring x²+6x-40

we get

x²+10x-4x-40

x(x+10)-4(x+10)

(x+10)(x-4)

now substituting in equation 1 ,we get

f(x)+g(x)=\frac{x-16}{(x+10)(x-4)}+\frac{1}{x+10}

taking l.c.m

=\frac{(x-16)+(x-4)}{(x-10)(x-4)}

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opening bracket

\frac{x-16+x-4}{x²-10x-4x+40}

=\frac{2x-20}{x²+6x-40}

So

answer is :

B. \bold b\frac{2x-20}{x^2+6x-40}

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3 years ago
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professor190 [17]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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