2 years ago

What is the solution to this system? 8

Mathematics

1 answer:

hoa [83]2 years ago

8 0

Answer:

(2,2)

Step-by-step explanation:

The solution to a system is the point on the graph where both lines intersect.

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21. please and thank you

olga2289 [7]

16 is the answer just add

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2 years ago

Find the PERCENT of change.<br> 20 dogs to 5 dogs

aliya0001 [1]

Answer:

75%

Step-by-step explanation:

20-5=15 - change in numbers

15/20×100%= 75%

3 0

2 years ago

<img src="https://tex.z-dn.net/?f=%5Csf%204x-15%3D3" id="TexFormula1" title="\sf 4x-15=3" alt="\sf 4x-15=3" align="absmiddle" cl

AnnZ [28]

Answer:

$4x - 15 = 3 \\ 4x = 3 + 15 \\ 4x = 18 \\ x = \frac{18}{4} \\ x = \frac{9}{2} \\ x = 4.5$

hope helpful <3

5 0

2 years ago

Read 2 more answers

A Norman window has the shape of a semicircle atop a rectangle so that the diameter of the semicircle is equal to the width of t

Makovka662 [10]

Answer:

132.233 ft2

Step-by-step explanation:

Let's call the width of the rectangle 'w' and the length 'x'. So the area of the semicircle is:

$A_1 = \pi*radius^2/2$

$A_1 = \pi*(w/2)^2/2$

$A_1 = \pi/8*w^2$

And the area of the rectangle is:

$A_2 = w*x$

If the perimeter of the window is 41 feet, we have:

$Perimeter = length + 2*width + \pi*radius$

$41 = x + 2*w + \pi*w/2$

$x = 41 - w(2 + \pi/2)$

Now, the equation for the total area of the window is:

$A = A_1 + A_2 = \pi/8*w^2 + w*x$

$A = \pi/8*w^2 + w*(41 - w(2 + \pi/2))$

$A = (\pi/8-2 - \pi/2)*w^2 + 41w = -3.1781w^2 + 41w$

To find the maximum area, we can find the x-coordinate of the vertex of the quadratic equation:

$x\_vertex = -b / 2a = -41 / (-3.1781*2) = 6.45$

So the width that gives us the maximum area of the window is 6.45 feet, and the area will be:

$A = -3.1781w^2 + 41w = -3.1781*(6.45)^2 + 41*6.45 = 132.233\ ft^2$

3 0

2 years ago

Question 2 of 10<br> Enter the value 2

marta [7]

What is the question you are asking?

7 0

3 years ago