14x - 7y = 8
-7y = -14x + 8
y = 2x - 8/7....so ur slope here is 2. A perpendicular line will have a negative reciprocal slope. All that means is flip the slope and change the sign. So we have 2 or 2/1....we flip it making it 1/2....we change the sign making it -1/2. So our perpendicular line will have a slope of -1/2.
y = mx + b
slope(m) = -1/2
(-2,5)...x = -2 and y = 5
now we sub into the formula and find b, the y int
5 = -1/2(-2) + b
5 = 1 + b
5 - 1 = b
4 = b
so the perpendicular line is : y = -1/2x + 4 <==
So 3/4 converted to a decimal is 0.75 .
0.75 X 26 = 19.5
So the answer could be 19.5, but if that’s not available it’s probably because they want it converted back to a fraction.
The answer would be 39/2. Still don’t see that as an answer choice? They might want you to convert that to a mixed number which is 19 1/2 .
Answer: 19.5 , 39/2, or 19 1/2
All are correct
Answer:
(x+4, y+1)
Step-by-step explanation:
I couldn't see the options below but this is the right one
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Answer:
Step-by-step explanation:
The triangle KLM is shown in the attached photo. The sum of the angles in a triangle is 180 degrees. It means that
angle K + angle L + angle M = 180 degrees. Since
m angle K=(10x+10). m angle L=(9x-3). m angle M=(7x-9), then
10x + 10 + 9x - 3 + 7x - 9 = 180
10x + 9x + 7x = 180 + 9 + 3 - 10
26x = 182
x = 182/26
x = 7
m angle K=(10x+10) = 10×7 + 10 = 80 degrees
m angle L=(9x-3) = 9×7 - 3 = 60 degrees
m angle M=(7x-9) = 7×7 - 9 = 40 degrees.
The triangle is an acute triangle because each angle is lesser than 90 degrees
The triangle is scalene triangle because non of the sides are equal.
Answer:
cot . (x- π/2)= - tanx
Step-by-step explanation:
cot . (x- π/2)= - tanx
cot .x - cot π/2= - tanx
cot π/2= 1/tanπ/2
But tan π/2= ∞
cot π/2 = 1/∞= 0
cotx - 0= - tanx
cot x = - tanx
cosx/sinx= - sinx/cosx Putting values of cot and tan
cosx/ sinx ( sinx/cos x) = -sinx/cos x (sinx/cos x )
Multiplying both sides with sinx/cos x
1= - sin²x/cos²x
cos²x= - sin²x as cosx = -sinx
