15 i guess because 4×4 = 16 and -1 its 15
Answer:
x = 2
Step-by-step explanation:
-4-4x = -8x + 4
-4-4x + 8x = 4
-4x + 8x = 4+4
4x = 4+4
4x = 8
ANSWER:
X=2
Hope THIS HELPED
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You can use trig here - you want to know the angle opposite from the shortest side, which we'll call "A," and you have the sides that touch the right angle. side A (21 inches) and side B (25 inches) intersect at a right angle, so the side we're missing is the hypotenuse. the angle across from side A is angle "a" - now, since we know which side is the hypotenuse, we can figure out which trig function works here. angle "a" can be found by doing tan(a)=Opposite/Adjacent --> tan(a)=A/B --> tan(a)=21/25 --> a=tan^-1(21/25). a = 40.03 degrees
The y intercept is when x=0, the x intercept is when y=0
so you two points are: (0, 3) and (-1, 0)
the slope is: m=(0-3)/(-1-0)=3, you y intercept(b) is 3
y=mx+b=> y=3x+3