Answer:
6 dm
Step-by-step explanation:
Triangle DBE is similar to triangle ABC, so their side lengths are proportional.
DE/AC = DB/AB
The length of DB can be found from ...
DB +AD = AB
DB = AB -AD = (15 -10) dm = 5 dm
So, we can fill in the proportion:
DE/(18 dm) = (5 dm)/(15 dm)
DE = (18 dm)·(1/3) . . . . . . . . . . simplify, multiply by 18 dm
DE = 6 dm
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It can be helpful to draw and label a figure.
Answer:
(4,0)
Step-by-step explanation:
When line intercepts x axis, y must be 0
when y =0
3x-2(0)=12
x=4
hence answer is (4,0)
14? I don't understand what keys have to do with it but 14 geese
Answer:
Step-by-step explanation:
perpendicular is 90 degrees or inverse slope of that point
y = -1/4x -1
so the inverse slope of -1/4 is 4
now the other equation is
y = 4x - 1
So the two equations are
y = -1/4x -1
y = 4x - 1
Answer:
14x + 7y = 21 is your answer.
Step-by-step explanation:
Standard form is Ax + By = C
Isolate the constant. Note the equal sign, what you do to one side, you do to the other. Add 7y to both sides.
14x = -7y + 21
14x (+7y) = -7y (+7y) + 21
14x + 7y = 21
14x + 7y = 21 is your answer.
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