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3 years ago

find the area of the shaded region of the radius is 9 Did I get the answer right

Mathematics

1 answer:

crimeas [40]3 years ago

5 0

Answer:69.66

r=9 so diameter is 18, and the shape being a square you do 18 x 18 = 324

now the circles area is 254.34 now find the difference... and it is 69.66

Step-by-step explanation:

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The hypotenuse of a right triangle has endpoints A(4, 1) and B(–1, –2).

zavuch27 [327]

Answer:

(–1, 1)

(4, –2)

Step-by-step explanation:

Let

(x,y) ----> the coordinates of point C

Applying the Pythagoras Theorem

$(-1-4)^2+(-2-1)^2=(x-4)^2+(y-1)^2+(x+1)^2+(y+2)^2$

step 1

Find the possibles values of x

$(-1-4)^2=(x-4)^2+(x+1)^2\\\\25=x^{2}-8x+16+x^{2}+2x+1\\\\2x^{2}-6x-8=0$

Simplify

$x^{2}-3x-4=0$

Solve the quadratic equation

$x^{2}-3x-4=(x+1)(x-4)$

The values of x are

x=-1 and x=4

step 2

Find the possibles values of y

$(-2-1)^2=((y-1)^2+(y+2)^2\\\\9=y^{2}-2y+1+y^{2}+4y+4\\\\2y^{2}+2y-4=0$

Simplify

$y^{2}+y-2=0$

Solve the quadratic equation

$y^{2}+y-2=(y+2)(y-1)$

The values of y are

y=-2, y=1

therefore

The possibles coordinates of point C are

(-1,1),(4,-2)

3 0

3 years ago

Read 2 more answers

Work out the area of this circle.

mylen [45]

→Answer:

$50.3cm^2$

→Step-by-step explanation:

Well the formula for the area of a circle is $\pi r^2$ .

→Given information

Pi is 3.142

radius is 4 cm

answer must be rounded to the nearest tenth

____________________________________________________________

So now we have to plug in the given information into the following formula $\pi r^2$ .

(3.142)(4)^2

So now we have to solve this formula using PEMDAS.

So 4 squared is 16 and 16*3.142 is 50.272cm^2.

The question clearly states the given answer must be rounded into the nearest tenth so 50.272 is 50.3 cm^2.

__________________I do hope this helps!__________________________

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3 years ago

3 ( x + 7 ) < 7 ( x + 2 )

Gre4nikov [31]

3(x+7)<7(x+2)

Inequality Form: x>7/4
Interval Notation: (7/4, infinity)

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3 years ago

Bob the wizard makes magical brooms . He charges 125 gold pieces for each magical broom he makes for his customers. He also char

ivann1987 [24]

Answer: f(x)=125g+50

Explanation: He is charging $125 for each gold piece so you would multiply “g” and 125.
You would add 50 as a one time fee so you add 50.

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3 years ago

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If the measures of two sides of a triangle are 3 feet and 7 feet, which of the following is a possible whole number measure for

Nady [450]

$7-3\ \textless \ x\ \textless \ 7+3
\\4\ \textless \ x\ \textless \ 10
\\ x \in \{5,6,7,8,9\}$

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￼find the area of the shaded region of the radius is 9 Did I get the answer right

find the area of the shaded region of the radius is 9 Did I get the answer right