3 years ago

If the radius of the circle is 9 cm, what is the area of sector AOB

Mathematics

1 answer:

cupoosta [38]3 years ago

3 0

254.47 you can google this kid just search formula for the area of a circle. Or A=pie*r^2

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What is the value of k?

Romashka-Z-Leto [24]

Answer:

k = 10

Step-by-step explanation:

The triangles angels added up must equal 180 degrees, and the top angle is 65 degrees by the 180 degree rule.

So 10k + 15 must equal the remaining 115

subtract 15 from each side and you get 10k = 100

divide each each by 10 and you get the answer of k = 10

3 0

3 years ago

• Paul has 5 pencils, each x inches in length. When she lines up the pencils end to end, they measure 34.5 inches. Select all th

IgorC [24]

Answer:

B and C

Step-by-step explanation:

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7. Expand and reduce A(x). Then calculate A(x) for x=1.<br> A (x) = (3x – 3)(3x + 2)

SashulF [63]

Given:

The function is

$A(x)=(3x-3)(3x+2)$

To find:

The simplified form of A(x) and value of A(x) at x=1.

Solution:

We have,

$A(x)=(3x-3)(3x+2)$

$A(x)=(3x)(3x)+(3x)(2)+(-3)(3x)+(-3)(2)$

$A(x)=9x^2+6x-9x-6$

$A(x)=9x^2-3x-6$

Putting x=1, we get

$A(1)=9(1)^2-3(1)-6$

$A(1)=9-3-6$

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$A(1)=0$

Therefore, the simplified form of A(x) is $A(x)=9x^2-3x-6$ and the value of A(x) at x=1 in 0.

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Write this number expanded form 325.809

stira [4]

300+20+5+.800+09 I hope that is what your looking for good luck :)

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3 years ago

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e-lub [12.9K]

Its two squares, so you need to start by finding the perfect roots that go into 117. If you need more help after that just comment :)

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3 years ago