Answer:
Step-by-step explanation:
triangle ABC is an equilateral so all angles and sides are equal to each other
AB = 6
triangle DEF is an isosceles so two of its angles are equal to each other
a triangles angles add up to 180°
to find the measure of these angles we’ll write this equation:
x + x + 40 = 180
and solve for x
2x + 40 = 180
2x = 140
x = 70°
so mF is 70°
Answer:
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Step-by-step explanation:
Answer:
14/15
Step-by-step explanation:
P(S or T) = P(S) + P(T) = 3/5 + 1/3
= 9/15 + 5/15 = 14/15
Answer:
21=12+9
Step-by-step explanation:
We are given the line 7-4x=7y.
If we write this line in the form y=mx+k, then m is the slope of the line.
7-4x=7y
7y=-4x+7
y=(-4/7)x+1
the slope of the line is -4/7
Any line parallel to this line must also have a slope equal to -4/7.
We want precisely the one passing through (2, 0) and having slope -4/7.
Using the point-slope form of the equation of a line:
(y-0)=-4/7(x-2)
y=(-4/7)x+8/7
Answer: y=(-4/7)x+8/7
another form is 4x+7y-8=0
