Answer:
(-1 / 4)x + y = -1.75
Step-by-step explanation:
Standard form is Ax + By = C
First I'm going to write it in point slope form, then I'm going to simplify.
Slope: (-3 + 1) / (-5 - 3) = 1 / 4
(y + 1) = 1 / 4(x - 3)
y + 1 = x / 4 - 3 / 4
(-1 / 4)x + y = -1.75
This might be wrong because I don't really like to use standard form.
Isolate the x. Note the equal sign. What you do to one side, you do to the other.
Subtract 9 from both sides
x + 9 (-9) = -4 (-9)
x = -4 - 9
x = -13
-13 is your solution
hope this helps
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Formula
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Sum of all exterior numbers = 360°
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Apply Formula
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z + 45 + 55 + 78 + 74 + z = 360
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Combine likes term
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2z + 252 = 360
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Take away 252 from both sides
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2z = 360 - 252
2z = 108
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Divide by 2 on both sides
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2z = 108
z = 108 ÷ 2
z = 54
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Find z + 45
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z + 45 = 54 + 45
z + 45 = 99°
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Answer: 99°
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Answer:
D) the scaled triangles perimeter is 1/3 the size of the original triangles perimeter
Step-by-step explanation:
Given
Original:
Scaled:
Looking at the dimension of both triangles, The relationship between the original and the scaled copy is:
Hence, the perimeter is:
Answer:
1. B
2.C
Step-by-step explanation:
A plot of land in the shape of a vertical ellipse. The equation of the ellipse is
If the foci are 8 feet from the center, then 
If the plot of land is 34 feet across the vertical axis, then 
Use formula 
(because ellipse is vertical, then b>a) to find a:
Then the plot of land is 2a=30 ft across the other axis.
If b>a, the eccentricity of the ellipse is
