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pishuonlain [190]
3 years ago
10

The emergency exit map for the youth center came back from the printer, but it’s too big for the frame. the map needs to be half

its current dimensions. If the current map is 1 in:10 ft, what should the scale of the new map be?
Mathematics
1 answer:
ivolga24 [154]3 years ago
7 0
Half an inch and 5 ft i hope this is correct
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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
Trigonometry question
ehidna [41]

Answer:

The scale factors that make figure smaller are the option D. -0.5 and the option E. 0.25

Step-by-step explanation:

we know that

If the absolute value of the scale factor is greater than 1, then the image will be larger than the pre-image.

If the absolute value of the scale factor is less than 1, then the image will be smaller than the pre-image.

If the absolute value of the scale factor is equal to 1, then the image will be the same size than the pre-image.

Additionally, a negative scale factor causes the dilation to rotate 180 degrees

therefore

In this problem

The scale factors that make figure smaller are the option D. -0.5 and the option E 0.25

6 0
3 years ago
3. Scout is conducting a research project on traffic patterns
ddd [48]

Answer:

7:45

Step-by-step explanation:

Since they both turn red at differnt times, you have to find a multiple to find the time they will be both on

Main St: 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98, 105

Elm St. 15, 30, 45, 60, 75, 90, 105

They will both turn on 105 minutes or 1 hour and 45 minutes from 6

6 + 1 hr 45 min = 7:45

8 0
3 years ago
Which term describes the figure? Choose 1 answer: Parallel lines Perpendicular lines None of the above​
liubo4ka [24]

Answer:

perpendicular lines

Step-by-step explanation:

because they intersect, they do not go even next to each other forever.

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2 years ago
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For 9. the third table and for 10. the second table
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