Answer:
Perpendicular
Step-by-step explanation:
L1 :
let A(-1,4) B(3,2)
the slope is : (YB - YA)/(XB -XA)
(2-4)/(3+1) = -2/(4)
the slope is
: -1/2
L2 :
let C(2,5) D(4,9)
the slope is : (YD - YC)/(XD -XC)
(9-5)/(4-2) = 4/(2)
the slope is
: 2
2×(-1/2)= -1
Perpendicular
Answer:
B) a²-(2*4)
Step-by-step explanation:
Since we are looking for the gray area only, we need to find the total area of the figure, but subtract that from the area of the unshaded area.
The total area of the figure is a*a=a²
The area of the unshaded figure is 2*4=8 units^2
This means the gray area is a²-(2*4) units^2, making B correct
Answer:
$16
Step-by-step explanation:
You would just multuply the amount of time and the amount of money it costs.
Answer:
x = 8
Step-by-step explanation:
Taking the antilog, you have ...
3x +8 = 2^5 = 32
3x = 24 . . . . subtract 8
x = 8 . . . . . . .divide by 3
___
You can have a graphing calculator show you the answer. Subtracting 5 from both sides gives ...
log2(3x +8) -5 = 0
The calculator can plot the left-side function and show you the value of x that makes it zero. That value is x=8.
Answer:
3/10
Step-by-step explanation:
The fraction, 1/12, can be written as 1/4 * 1/3. Since we know that 1/3 = 0.333333... and it doesn't terminate, we know that 1/12 doesn't terminate. Similarly 2/9 = 2/3*1/3 and 2/3 = 2*1/3, and neither of these fractions terminate. But, when dividing 3/10, you get 0.3, which terminates.