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noname [10]
3 years ago
6

EASY QUESTION Find area and please show working out

Mathematics
1 answer:
vekshin13 years ago
8 0
Area of a semi-circle = 1/2 x x r square.

area of larger semi circle
= 1/2 x x 10 square
= 50

area of smaller semi circle
= 1/2 x x 5 square
= 12.5

Total area = 50 + 12.5 = 196 cm square ( to 3 sf ) or 62.5
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Which solution to the equation StartFraction 1 Over x minus 1 EndFraction = StartFraction x minus 2 Over 2 x squared minus 2 End
Darina [25.2K]

Answer:

x = - 4

Step-by-step explanation:

Given the expression

\frac{1}{x-1} = \frac{x-2}{2x^2-2}

This can also be expressed as;

\frac{1}{x-1} = \frac{x-2}{2(x-1)(x+1)}\\1 = \frac{x-2}{2(x+1)}

Cross multiply

2(x+1) = x - 2\\2x+2 = x-2

Add 2 to both sides

2x+2+2 = x-2+2\\2x+4 = x\\2x-x = -4\\x = -4

Hence the required extraneous solution is x = -4

4 0
3 years ago
Read 2 more answers
Jane cuts a foam block along the red line. When she looks at the newly
alexira [117]
I believe the answer is A
4 0
3 years ago
Which could be used to evaluate the expression -6(2/3)
natka813 [3]

Answer: -4

Step-by-step explanation:

Do -6 x 2 to get -12, then divide by 3 to get -4

Thats assuming this is a fraction and not an actual division sign

8 0
3 years ago
(75 points) need help now
Igoryamba

Answer:

A is not a function

Step-by-step explanation:

In table A, the x value of 4 goes to two different y values

To be a function each x value can only go to one y value

A is not a function

4 0
3 years ago
Find the equation in terms of x of the line through the points (-4,-6) and (1,9)
Annette [7]

Answer:

y = 3x + 6

Step-by-step explanation:

y2 - y1 / x2 - x1

9 - (-6) / 1 - (-4)

15/5

= 3

y = 3x + b

9 = 3(1) + b

9 = 3 + b

6 = b

4 0
3 years ago
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