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bixtya [17]
3 years ago
12

A circle of a radius r,cm inside a square, so that the circle touches the sides of the square.

Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
4 0

Answer:

30.9 square cm

Step-by-step explanation:

subtract area of circle from area of square

Area of square = 12² or 144  

(each side is twice the radius)

Area of circle = 6²π or 113.1

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Using the linear combination method, what is the solution to the system of linear equations 7x-2y=-20 and 9x+4y=-6 ?
AleksandrR [38]

Answer:

(x, y ) = (- 2, 3 )

Step-by-step explanation:

given the 2 equations

7x - 2y = - 20 → (1)

9x + 4y = - 6 → (2)

multiply (1) by 2 making the coefficients of y equal and opposite

14x - 4y = - 40 → (3)

add (2) and (3) term by term

(9x + 14x ) + (4y - 4y ) = (- 6 - 40 )

23x = - 46 ( divide both sides by 23 )

x = - 2

substitute x = - 2 into either (1) or (2) for y

(2) - 18 + 4y = - 6 ( add 18 to both sides )

4y = 12 ( divide both sides by 4 )

y = 3

solution is (- 2, 3 )


4 0
3 years ago
Read 2 more answers
Check all the answers that are true.
jonny [76]
A C and D

put the fractions into a calculator dividing the top one by the bottom one and just determine whichever one is greater ^^
6 0
3 years ago
Suppose that qequals30​, Lequals5​, and Kequals15 is a point on the production function qequals​f(L, ​K). Is it posssible for qe
Kamila [148]

Answer:

No

Step-by-step explanation:

If q=30​, L=5​, and K=15 is a point on the production function q=​f(L, ​K).

Production function is an equation that expresses the relationship between the quantities of factors of production used and the amount of product obtained under the assumption that the most efficient available methods of production are used.

The combination q=30​, L=5​, and K=16 cannot be a point because we assume production functions are efficient.

7 0
3 years ago
Read 2 more answers
What is the Growth/Decay Factor?
Stels [109]

Answer:

Growth/Decay Factor = -6

Step-by-step explanation:

Hi there!

To find the growth/decay factor (<em>m</em>), we can use the following formula:

m=\displaystyle\frac{y_2-y_1}{x_2-x_1} where two given points are (x_1,y_1) and (x_2,y_2)

Plug any two of the given points in the table (below, you can see that I used (2,3) and (1,9):

m=\displaystyle\frac{3-9}{2-1}\\\\m=\displaystyle\frac{-6}{1}\\\\m=-6

Therefore, the growth/decay factor is -6.

I hope this helps!

8 0
3 years ago
What is the value of tanA<br> 8/10<br> 6/10<br> 8/6<br> 6/8
nikitadnepr [17]
TanA = BC/AC
tanA = 6/8

answer
<span>6/8</span>
3 0
4 years ago
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