pls help me with this math problem 90 points for you in return.

Answer:

area of circle = πr^2

just substitute 20 for r:

π(20)^2

= 400π

If the question ask for an answer in terms of pi, this is your answer. If it doesn't, simplify it further to get:

= 1256.637061 (m/cm)^2

You can round this however you like, but I would say either 3 significant figures, either 1 or 2 decimal places.

Step-by-step explanation:

hope this help uhh ...

have a good day.

[tex]\tt AB=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

[tex]\tt AB=\sqrt{(-3-5)^2+(-3-1)^2}\\\\AB=\sqrt{-8^2+-4^2}\\\\AB=\sqrt{80}=4\sqrt{5}[/tex]

Answer:

[tex]k = \frac{322}{27} [/tex]

Step-by-step explanation:

x + 3 = 0 → x = - 3

25 + 4(-3)⁴ + k(-3)³ + (-3) - 11 = 13

25 + 324 - 27k - 3 - 11 = 13

349 - 27k - 14 = 13

349 - 14 - 13 = 27k

349 - 27 = 27k

322 = 27k

k = 322/27

Answer:

Expressions A,C and E

Step-by-step explanation:

Collecting like terms will give us :

-5.5z +7y - 5

This is expression E

Expressions A and C are equivalent expressions meaning that they are the same thing but just in a different order.

Answer:

1. Addition

sum

2. Subtraction

difference

deduct

3. Multiplication

product

of (I'm not sure about this one, though)

4. Division

divided by

quotient

5. Equals

is

Step-by-step explanation:

The graph of the function y = sin (0.25x) is attached.

       (+) for addition (−) for subtraction (×) for multiplication (÷) for division.

Given are the mathematical operations.

We can match the operations as -

Therefore, the mathematical operations are matched with their equivalent names.

To solve more questions on mathematical operations, visit the link below -

https://brainly.com/question/20628271

#SPJ2

Answer: u can use a website called mixed numbers fractions it’s easy <3

1. 11/2

1. 11/22. - 1/2

1. 11/22. - 1/23. - 47/20

Hope this helps!

Answer:

88$

Step-by-step explanation:

I don't know what you think about it

Answer: D

Step-by-step explanation:

Total tickets sold is $779

Calculate the options to get the right answer.

Option D is correct at

81 students at $4 = 324

65 adults at $7= 455

Total is $ 779

Answer:

[tex]\huge\boxed{\sf 8 + 4\sqrt{2} \ cm }[/tex]

Step-by-step explanation:

[tex]\theta = 45 \textdegree[/tex]

opposite = 4 cm

Using tan first to find the adjacent side:

[tex]\displaystyle tan \theta = \frac{opposite}{adjacent} \\\\tan \ 45 = \frac{4}{adjacent}\\\\1 = \frac{4}{adjacent} \\\\Multiply \ 'adjacent' \ to \ both \ sides\\\\adjacent = 4 \ cm[/tex]

Finding Hypotenuse now by using Pythagorean theorem:

[tex](Hyp)^2 = (base)^2 + (perp)^2[/tex]

where base = 4, hyp = 4

(Hyp)² = (4)² + (4)²

(Hyp)² = 16 + 16

(Hyp)² = 32

Take sqrt on both sides

[tex]Hyp = 4\sqrt{2}[/tex] cm

Exact perimeter of triangle:

= base + perpendicular + hypotenuse

= 4 + 4 + 4√2

= [tex]8 + 4\sqrt{2}[/tex] cm

[tex]\rule[225]{225}{2}[/tex]

Answer:

88%

Step-by-step explanation:

1760 + 240 = 2000. This means 1760/2000 of them were voting in favor of Starbucks. 1760/2000 simplifies to 88/100, which is 88%.

Answer:

9 sq.un.

Step-by-step explanation:

The polygon it is surrounded by an imaginary square of 4 X 4 units per side

To their area we subtract the areas of the imaginary triangles in white.

Results the area of the shaded polygon:

[tex]A=4^{2} -\frac{(2)(3)}{2} -2(\frac{(1)(3)}{2} )-\frac{(1)(2)}{2} =16-3-3-1=16-7=9sq.un.[/tex]

Hope this helps

Answer:

9 sq. un

Step-by-step explanation:

Hey there!

ORIGINAL EQUATION:
0.75(2 + 6 x 4 - 2 × 7 - 2)

WORKING WITHIN the PARENTHESES:
2 + 6 x 4 - 2 × 7 - 2

= 2 + 24 - 2 × 7 - 2

= 26 - 2 × 7 - 2

= 26 - 14 - 2

= 12 - 2

= 10

NEW EQUATION:

0.75(10)

SIMPLIFY IT!
7.50 ≈ 7.5

Therefore, your answer should be: 7.5

~Amphitrite1040:)

Explanation:

Can we rotate the figure some angle smaller than 360 degrees and have it match up with its original image? The answer to that is "no". Any such rotation will change the image to something else. Therefore, this figure does not have any point symmetry (aka rotational symmetry).

Can we reflect one half of the figure over some line to get the other half? The answer here is also "no". The diagram has no reflectional symmetry either.

Plane symmetry is ruled out because that only applies to 3D settings.

Answer:

9

Step-by-step explanation:

we can use the pythagorean theorem so (15)²= (12)² + (x)²--> (15)²-(12)²=x²

take the square root of both sides ans x=9

note! this is a special type of triangle called a 3-4-5 special right triangle because all the sides when divided by a factor of 3 will simplify down to the sides 3-4-5 (only true when the hypotheneuse is the 5 because it's the longest side of a triangle)

Answer/Step-by-step explanation:

The exponential function modeling the number of lions ⇒  the years passed since 2010 is appointed as

[tex]f(x)=2^1^+^2^x[/tex]

Well, If you have an question like what is exponential function?

Let's me tell you:

exponential functions which are expressed as some constant raised to the power of the argument called exponential function.

You might be asking how to find which function can model the given question..

[tex]\mathrm{Since \;2012 - 2010 = 2 \;and\; the\; number \;of\;lions = 32 =2^5}[/tex]

[tex]\mathrm{and \;2013 -2010 = 3\; and\; the\; number \;of\; lions\; =128 = 2^7}[/tex]

Hence, there is increment of 2 exponent as 1 year was changed.

Now, we have:

[tex]f(x)=2^2^x^+^a[/tex]

[tex]\mathrm{Thus,\; it\; increases \;every \;year \;by\; a \;ratio \;of \;2^(^2^)}[/tex]

[tex]\mathrm{Thus, \;in \;2011, \;it \;was \;2^(^5^) - 2^(^2^) = 2^(^3^)\; lions}[/tex]

[tex]\mathrm{In\; 2010, it\; was 2^(^3^) - 2^(^2^) = 2}[/tex]

Since Lions were introduced in the park in 2010, using f(x), it means;

[tex]x = 0, f(x) = 2[/tex]

[tex]x = 1, f(x) = 2^(^3^)[/tex]

[tex]x = 2, f(x) = 2^(^5^)[/tex]

[tex]x = 3, f(x) = 2^(^7^)[/tex]

Let's use the generic formula: y = ab^(x)

At x = 0 and y = 2, we have:

[tex]2 = a * b^(^0^)[/tex]

Thus,a = 2

At x = 1, y = 2^3

b = 8/2

b = 4

So the exponential equation is;

[tex]y = 2(4^(^x^))[/tex]

~Learn with Lenvy~

Please include picture. thank you

Answer:

3x=27

x=27÷3

x=9

here is your answer

mark as brilliant

Answer:

[tex]\huge\boxed{\sf\:x = 9}[/tex]

Step-by-step explanation:

[tex]3x = 27[/tex]

Divide both the sides of the equation by 3.

[tex]x = \frac{27}{3}[/tex]

Now, solve it.

[tex]\boxed{x = 9}[/tex]

[tex]\rule{150}{2}[/tex]

Answer: D

Step-by-step explanation:

A) this is SSA, not SAS.

b) I'm not sure what this reflection would be

C) Don't assume

Answer:

The first one is correct

Step-by-step explanation:

Answer:

4/5

Step-by-step explanation:

this will not need the bot

We need x first

[tex]\\ \rm{:}\dashrightarrow 2x+3x-6=74[/tex]

[tex]\\ \rm{:}\dashrightarrow 5x-6=74[/tex]

[tex]\\ \rm{:}\dashrightarrow 5x=80[/tex]

[tex]\\ \rm{:}\dashrightarrow x=16[/tex]

Answer:

$6.84

Step-by-step explanation:

18.25/1.2 = x/0.45

Answer:

A

Step-by-step explanation:

Answer: I believe the answer is d or b

Step-by-step explanation:

The number of pizza pieces left is (x + 4) / 4. Option c

Let's assume the total number of pizza pieces is represented by 'x'.

Kevin takes 1/4 of the total pieces, which is (1/4) * x = x/4.

Keith takes one piece less than twice the number of pieces Kevin took, which is 2 * (x/4) - 1 = (2x/4) - 1 = x/2 - 1.

To calculate the number of pizza pieces left, we need to subtract the sum of Kevin's and Keith's pieces from the total number of pieces (x):

Leftover pieces = Total pieces - (Kevin's pieces + Keith's pieces)

= x - (x/4 + x/2 - 1)

= x - (3x/4 - 1)

= x - 3x/4 + 1

= (4x - 3x + 4) / 4

= (x + 4) / 4

Therefore, the number of pizza pieces left is (x + 4) / 4.

The correct option among the given choices would be (c) 1/2x + 1.

Learn more about fraction at https://brainly.com/question/78672

#SPJ2

Answer:

61.(81) repeating

Step-by-step explanation:

Can u give me brainliest?