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Andru [333]
3 years ago
8

Please help! i don't understand

Mathematics
1 answer:
Over [174]3 years ago
8 0

Answer:

x will be 13 here

ask for any explanation you want

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Find the area of the circle. Use your calculator's value of π. Round your answer to the nearest tenth. A) 27.6 yd2 B) 283.5 yd2
yan [13]
<h2>Answer:</h2>

s \approx 282.20ft^2

<h2>Step-by-step explanation:</h2>

A circle is a curve made up of all the points that are the same distance from the center. In this problem, we are asked to find the area of the sector. A sector is a region of a circle between two radii. Suppose you have a central angle \theta degrees, the sector can be found as:

s=\frac{\theta}{360}\times\pi r^{2}

We know:

r=14ft \\ \\ \theta=165^{\circ}

So:

s=\frac{165^{\circ}}{360^{\circ}}\times\pi (14^{2}) \\ \\ s=\frac{11}{24}\times (196\pi) \\ \\ s=\frac{539}{6}\pi \approx 282.20ft^2

6 0
3 years ago
PLEASE help me:( i'm desperate (and dumb): <br><br> factor 2n^(3)+7n^(2)-2n-7
Diano4ka-milaya [45]

x {}^{2} (2x + 7) - (2x + 7) \\ (2x + 7)(x { }^{2}  - 1) \\ (2x  + 7)(x - 1)(x + 1)
4 0
3 years ago
What is the rate of change from x = 0 to x = pi over 2 ? (6 points) trig graph with points at: (0, negative 4) and (pi over 2, 0
Sedaia [141]

Answer:

Rate of Change : 8 / π

Step-by-step explanation:

To determine this rate of change, we have to first consider the points at x = 0 and x = π / 2.

When x = 0, f( x ) = - 4,

When x = π / 2, f( x ) = 0

Remember that rate of change is represented by a change in y / change in x. Therefore,

( 0 - ( - 4 ) ) / ( π / 2 - 0 ),

( 0 + 4 ) / ( π / 2 ),

4 / π / 2 = 8 / π

Therefore the rate of change from x = 0 ➡ x = π / 2 will be 8 / π.

3 0
3 years ago
Read 2 more answers
A nonzero polynomial with rational coefficients has all of the numbers [1 sqrt{2}, ; 2 sqrt{3}, ;3 sqrt{4},; dots, ;1000 sqrt{10
Colt1911 [192]

Answer:

Its degree can be at least 1970

Step-by-step explanation:

for each root of the form √q, where q is not a square, we have a root -√q. Therefore, we need to find, among the numbers below to 1000, how many sqaures there are.

Since √1000 = 31.6, we have a total of 30 squares:

2², 3², 4², ...., 30², 31²

Each square gives one root and the non squares (there are 1000-30 = 970 of them) gives 2 roots (one for them and one for the opposite). Hence the smallest degree a rational polynomial can have is

970*2 + 30 = 1970

8 0
3 years ago
Angel y Claudia están considerando contratar a un empleado que les ayude con el trabajo en el sibercafe han entrevistado a dos p
Anni [7]

Answer:

nose xd

Step-by-step explanation:

7 0
3 years ago
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