Cos60 = BC / AB
Cos60 = a/12
answer is D. last one
Cos60 = a/12
Answer:
These lines are perpendicular.
Step-by-step explanation:
Put both equations in the slope intercept form of a line.
y = -6x - 8 This is already in the slope intercept form for a line
-x + 6y = 12 Add x to both sides of the equation
6y = x + 12 Divide through the whole equation by 6
y = 1/6x +2
Now we compare the two slopes of -6 and 1/6. They are negative reciprocals of each other. That means that the line are perpendicular.
Answer:
x=120cc volume of 7% solution
Step-by-step explanation:
Saline solution(7% solution) +
Saline solution (19% solution) = Saline solution (11% solution)
Saline solution(7% solution): (0.07)(x)
x= unknown volume
Saline solution (19% solution): (0.19)(60)
60= given volume
Saline solution (11% solution)= (0.07)(x+60)
x+60= Total volume
solve for x
(0.07)(x) + (0.19)(60) = (0.11)(x+60)
0.07x +11.4 = 0.11x + 6.6
0.11x - 0.07x = 11.4 - 6.6
0.04x = 4.8
x = 4.8/0.04
x = 120 cc volume of 7% solution
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Work out the area of the square :
6 x 6 = 36
As there are 2, multiply by 2:
36 x 2 = 72
Work out the area of the rectangle:
12 x 6 = 72
As there are 4, multiply by 4:
72 x 4 = 288
Add these values:
288 + 72 = 360
Thus, your answer is E. 360 in^2
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- Ally ✧
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42÷6=7 42=Perimeter 6=Sides 7=Possible lengths of the hexagon.
