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Alex_Xolod [135]
3 years ago
10

Can someone help :(!

Mathematics
2 answers:
tester [92]3 years ago
5 0

Answer:

A

Step-by-step explanation:

You should know the area of a circle, A = πr².

So, all you need to find is the area of half a circle, or A = \frac{1}{2} πr²

We see that the radius is half of the diameter or r = 6 in.

A = \frac{1}{2} (3.14)(6)²

A = 56.52 in²

Vlad1618 [11]3 years ago
4 0
The awnser for this should be a
You might be interested in
Is (x-4) a factor of f(x) = x3 - 2x2 + 5x + 1? Use either the remainder theorem or the factor theorem to explain your reasoning.
Virty [35]

Answer:

(x-4) is not a factor of f(x)=x³-2x²+5x+1

Step-by-step explanation:

Uding the remainder theorem,(x-4) is a factor if the remainder is 0

Plug in x=4

(4)³-2(4)²+5(4)+1

64-32+20+1

64-53

11

7 0
3 years ago
Help!! Find missing value for each quadratic function
Svetllana [295]

I'll do the first one to get you started. The answer is -3

=================================================

Explanation:

When x = -1, y = 0 as shown in the first column. The second column says that (x,y) = (0,1) and the third column says (x,y) = (1,0)

We'll use these three points to determine the quadratic function that goes through them all.

The general template we'll use is y = ax^2 + bx + c

------------

Plug in (x,y) = (0,1). Simplify

y = ax^2 + bx + c

1 = a*0^2 + b*0 + c

1 = 0a + 0b + c

1 = c

c = 1

------------

Plug in (x,y) = (-1,0) and c = 1

y = ax^2 + bx + c

0 = a*(-1)^2 + b(-1) + 1

0 = 1a - 1b + 1

a-b+1 = 0

a-b = -1

a = b-1

------------

Plug in (x,y) = (1,0), c = 1, and a = b-1

y = ax^2 + bx + c

0 = a(1)^2 + b(1) + 1 ... replace x with 1, y with 0, c with 1

0 = a + b + 1

0 = b-1 + b + 1 ... replace 'a' with b-1

0 = 2b

2b = 0

b = 0/2

b = 0

------------

If b = 0, then 'a' is...

a = b-1

a = 0-1

a = -1

------------

In summary so far, we found: a = -1, b = 0, c = 1

Therefore, y = ax^2 + bx + c turns into y = -1x^2 + 0x + 1 which simplifies to y = -x^2 + 1

------------

The last thing to do is plug x = 2 into this equation and simplify

y = -x^2 + 1

y = -2^2 + 1

y = -4 + 1

y = -3


3 0
3 years ago
Is -8.43 a integer whole number or a rational number ?
s2008m [1.1K]

Answer:

rational number

Step-by-step explanation:

A whole number would be just 8. Nothing behind it.

5 0
3 years ago
What is the result when x4 + 9x^3 - 20x2 + 14x – 14 is divided by x – 1? If
Leno4ka [110]
This was done from using the method of synthetic division. I attached the image. Hope this helps

5 0
3 years ago
Mr. David monthly salary is revised from $2500 to $2600.What percentage is the salary increased
Sveta_85 [38]

Answer:

4% Hope this helped.

Step-by-step explanation:

The formula is: final value minus starting value divided by the starting value then times 100

THIS FORMULA ONLY APPLIES TO PERCENT INCREASE

<u>Final Value−Starting Value</u>

      Starting Value                    x100

Plug numbers in

2600-2500/2500 x 100

100/2500=0.04

0.04x100

=4%

5 0
3 years ago
Read 2 more answers
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