1st pic
It's a rhombus
- <span>None of the angles are 90 degrees (can't not be rectangle or square)
- Opposite angles are equal
Top triangle
180 - ( 72 + 72 )
=180 - 144
= 36
same as bottom triangle....
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2nd pic.
Rhombus...
opposite angles are equal
so m<1 = m<2 = 160
180 - 160 = 20
m< 3 = 20/2 = 10
answer
</span>m<2 = 160
m<3 = 10<span>
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3rd pic.
</span> <span>isosceles trapezoid
</span>
<span>The legs are congruent by definition
</span>
so AB = CD
7y - 4 = 8y - 18
7y - 8y = -18 + 4
- y = -14
y =14
answer y = 14
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pic 4
A(-5, -1), B(-9, 6) C (-1, 5) D(3,-2)
A(-5, -1) and C (-1, 5) ---find slope of 1st pair
slope = (5 + 1)/(-1 + 5) = 6/4 = 3/2
B(-9, 6) D(3,-2)---find slope of 2nd pair
slope = (-2 -6)/(3+9) = -8/12= -2/3
slope of 2nd pair (-2/3) is negative and reciprocal of the 1st pair (3/2)
so it's perpendicular
Answer:
x = 6
Step-by-step explanation:
6 - 2x = (5-9)x +18
6 - 2x = -4x +18
2x = 12
x = 6
Answer:
Change over initial
(3.24-2.85)/2.85=0.1368
13.68%
Step-by-step explanation:
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Answer:
$20.06
Step-by-step explanation:
17 x 0.18 = 3.06 Multiply the cost by the tip percent
17 + 3.06 = $20.06 Add the tip amount to the original cost
Slope of the line passes through (5,10) and (7,12) is 1.
Step-by-step explanation:
Given,
The two points are (5,10) and (7,12).
To find the slope passing through the given points.
Formula
The slope of the line passing through (
) and (
) is ![\frac{y_{2} -y_{1} }{x_{2} -x_{1} }](https://tex.z-dn.net/?f=%5Cfrac%7By_%7B2%7D%20-y_%7B1%7D%20%7D%7Bx_%7B2%7D%20-x_%7B1%7D%20%7D)
Now, putting
we get,
Slope =
=
= 1
Hence,
Slope of the line passes through (5,10) and (7,12) is 1.