17) y-5=-3(x+2)
y=-3x-1
-3x-1
-3x=1
x=-1/3
18)y+1=4/5(x-5)
y=4x/5-5
4x/5-5=0
4x x5/5-5x5=0x5
4x-5x5=0x5
4x-25=0
4x=25
x=25/4
19)0=x-4
x-4=0
x=4
20)y-3=-1/2(x+4)
y=-x/2+1
-x/2+1=0
x=2
21)y-4=1/3(x+3)
y=x/3+5
x/3+5=0
x/3=-5
x=-5x3
x= -15
22) y+5=3(x+3)
y=3x+4
3x+4=0
3x=-4
x=-4/3
23) y-3=-2(x+2)
y=-2x-1
-2x-1=0
-2x=1
x=-1/2
24)y-1=5/3(x-3)
y=5x/3-4
5x/3-4=0
x=4x3/5
x=12/5
9514 1404 393
Answer:
D. Can't be determined
Step-by-step explanation:
You know that the sum of angles in a triangle is 180°, so ...
a + x + 60 = 180
b + y + 40 = 180
Then the difference between 'a' and 'b' is ...
a - b = (120 -x) -(140 -y) = y -x -20
Since the values of x and y are unknown, the relative values of a and b cannot be determined.
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<em>Additional comment</em>
If you know the triangles are similar (or congruent) and that the relative angle sizes are as they appear to be, then you could say a=b. There is nothing in this problem statement to indicate that is the case.
Answer:
-6125
Step-by-step explanation:
negative 78 squared = -6084
-6084 + 3 - 9 = -6090
-6090 - 5 squared minus 6 minus 4 = --6125
I got confused by "8th" and "a minus" do you mean 3a, and 6a?
Answer:
Each piece is 9 inches
Step-by-step explanation:
3 ft = 36 inches
36 inches / 4 equal-length pieces = 9 inches per piece