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djverab [1.8K]
3 years ago
9

I need help with my homework question 3​

Mathematics
1 answer:
love history [14]3 years ago
8 0
Scale the the size of the room to 0.059x for the drawing. The dimensions for the largest possible drawing will be 8.5in by 9.91 in.
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I need to find the answer to this question
mariarad [96]
Y=-2/5x + 4.5 , that because 4.5 is on the y coordinate and it is descending 2 units while progressing 5 to the right
7 0
3 years ago
The equation x2 16 + y2 9 = 1 defines an ellipse, which is graphed above. in this excercise we will approximate the area of this
Citrus2011 [14]
(a) 4 
(b) y = sqrt(9 - (9/16)x^2)  
The best guess to the formula using knowledge of the general formula for an ellipse is: 
x^2/16 + y^2/9 = 1  
(a). An ellipse is reflectively symmetrical across both the major and minor axis. So if you can get the area of the ellipse in a quadrant, then multiplying that area by 4 would give the total area of the ellipse. So the factor of 4 is correct. 
 (b). The general equation for an ellipse is not suitable for a general function since it returns 2 y values for every x value. But if we restrict ourselves to just the positive value of a square root, that problem is easy to solve. So let's do so:
 x^2/16 + y^2/9 = 1
 x^2/16 + y^2/9 - 1 = 0
 x^2/16 - 1 = - y^2/9
 -(9/16)x^2 + 9 = y^2
 9 - (9/16)x^2 = y^2
 sqrt(9 - (9/16)x^2) = y
 y = sqrt(9 - (9/16)x^2)
4 0
3 years ago
What is the value of x in the equation 5(2x - 7) = 15x -10
ASHA 777 [7]
10x - 35 = 15x - 10
-35 = 5x -10
-25 = 5x
-5 = x
The value of x is -5.
3 0
3 years ago
Can a triangle have two obtuse angle
Dvinal [7]
Nope  It is impossible


4 0
3 years ago
Read 2 more answers
What is x²+x-30 as a binomial?
Zolol [24]
X^2+x-30 -- find two numbers that add to one and multiply to -30, which would be 6 and -5. so now you have x^2+6x-5x-30. factor out x and 5 to get x(x+6)-5(x+6). so you get (x+6)*(x-5)
6 0
3 years ago
Read 2 more answers
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