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3 years ago

Simplfy the expression: (x - 9)^2

1 answer:

6 0

The answer would be x^2-18x+81. This can be found be writing "(x-9)^2" twice, and distributing. Combine like terms, and you should get this answer.

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You walk around a circle which has a diameter of 9 m, how far have you walked?

Snezhnost [94]

Answer:

C =28.26m

Step-by-step explanation:

We are walking around a circle, which means we are finding the perimeter. The perimeter of a circle is called the circumference.

We find the circumference by

C = pi *d where d is the diameter

C = 3.14 * 9

C =28.26m

6 0

3 years ago

Read 2 more answers

Please help me find the area of shaded region and step by step

Bumek [7]

Answer:

Part 1) $A=60\ ft^2$

Part 2) $A=80\ cm^2$

Part 3) $A=96\ m^2$

Part 4) $A=144\ cm^2$

Part 5) $A=9\ m^2$

Part 6) $A=(49\pi -33)\ in^2$

Step-by-step explanation:

Part 1) we know that

The shaded region is equal to the area of the complete rectangle minus the area of the interior rectangle

The area of rectangle is equal to

$A=bh$

where

b is the base of rectangle

h is the height of rectangle

$A=(12)(7)-(8)(3)$

$A=84-24$

$A=60\ ft^2$

Part 2) we know that

The shaded region is equal to the area of the complete rectangle minus the area of the interior square

The area of square is equal to

$A=b^2$

where

b is the length side of the square

$A=(12)(8)-(4^2)$

$A=96-16$

$A=80\ cm^2$

Part 3) we know that

The area of the shaded region is equal to the area of four rectangles plus the area of one square

$A=4(4)(5)+(4^2)$

$A=80+16$

$A=96\ m^2$

Part 4) we know that

The shaded region is equal to the area of the complete square minus the area of the interior square

$A=(15^2)-(9^2)$

$A=225-81$

$A=144\ cm^2$

Part 5) we know that

The area of the shaded region is equal to the area of triangle minus the area of rectangle

The area of triangle is equal to

$A=\frac{1}{2}(b)(h)$

where

b is the base of triangle

h is the height of triangle

$A=\frac{1}{2}(6)(7)-(6)(2)$

$A=21-12$

$A=9\ m^2$

Part 6) we know that

The area of the shaded region is equal to the area of the circle minus the area of rectangle

The area of the circle is equal to

$A=\pi r^{2}$

where

r is the radius of the circle

$A=\pi (7^2)-(3)(11)$

$A=(49\pi -33)\ in^2$

7 0

3 years ago

If the mean of 20, y, 10,5,15 is 22 find the value of y

QveST [7]

Looks like 14.4 because you have to add them all together and divide by the total numbers
(20+22+10+5+15)/ 5

8 0

3 years ago

If you know this could you help me?

liq [111]

Answer:

Equation : y = -0.5x − 8

Step-by-step explanation:

because i grabbed two points and plugged them in im not very good at explaining but im 99% sure thats right

4 0

2 years ago

The price of each frozen yogurt at a store is $4. A customer pays exactly $30 for x Frozen yogurts after a $2 discount. How many

Alchen [17]

Answer: 8
Explanation: Without the discount, 8 frozen yogurts for $4 will come to $32. Deduct $2 from the total cost (32-2), and now they're paying $30.

5 0

3 years ago

Read 2 more answers