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lyudmila [28]
3 years ago
14

The diameter of a circle is 16 cm. Find its area in terms of Pi

Mathematics
1 answer:
babymother [125]3 years ago
6 0

Answer:

A= 201.06

Step-by-step explanation:

A=πr^2

d=2r

Input the information into those formulas. Im honestly not sure if thats the right answer but its better than nothing.

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I need someone to answer asap
algol [13]

Answer:

y = 8.5

Step-by-step explanation:

7 0
3 years ago
What is the root of this equation? <br>2x^2 - 4x + 9 = 0​
faust18 [17]

Answer:

x = 1 + i sqrt(7/2) or x = 1 - i sqrt(7/2)

Step-by-step explanation:

Solve for x:

2 x^2 - 4 x + 9 = 0

Divide both sides by 2:

x^2 - 2 x + 9/2 = 0

Subtract 9/2 from both sides:

x^2 - 2 x = -9/2

Add 1 to both sides:

x^2 - 2 x + 1 = -7/2

Write the left hand side as a square:

(x - 1)^2 = -7/2

Take the square root of both sides:

x - 1 = i sqrt(7/2) or x - 1 = -i sqrt(7/2)

Add 1 to both sides:

x = 1 + i sqrt(7/2) or x - 1 = -i sqrt(7/2)

Add 1 to both sides:

Answer:  x = 1 + i sqrt(7/2) or x = 1 - i sqrt(7/2)

4 0
3 years ago
Determine the slope of the line that contains the given points. E(-5,6), (4, -3) *
S_A_V [24]

Answer:

-1

Step-by-step explanation:

Use the slope formula to calculate

-3-6/4-(-5)

= -9/9

= -1 (Slope)

8 0
2 years ago
Jamie's car is 9 yards long. Joey's car is 27 feet long. When you line them up one in front of the other, how long are they toge
Softa [21]

Answer:

54

Step-by-step explanation:

9 x 3 = 27

27 + 27 = 54

8 0
2 years ago
The average cost of a yearbook, years since 1985, is found in the function f(x)= 0.65x+24.75. What is the average cost of a year
pishuonlain [190]
There has been 28 years since 1985 to 2013, this becomes your x value. Plug x into the equation:

f(x) = (.65*28)+24.75
f(x) = 18.2+24.75
f(x) = 42.95
3 0
3 years ago
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