Answer:
12 x 9 (12 on the top and bottom and 9 on the sides)
Step-by-step explanation:
100 km = 2 units, or 2 boxes
450 x 2/100 = 900/100 = 9
(not sure if this would help or not)
Answer:
Well it sounds like you are doing volume so it is length time winth time high so times all the fraction
Step-by-step explanation:
Answer:
1 B
2 C
3 E
4 D
5 A
Step-by-step explanation:
1. W is less than Zero
2. W is equal or less than Zero
3. W cannot equal Zero. W is more than Zero or less than Zero
4. W is equal or greater than Zero
5. W is greater than Zero
Answer:
Frequency: 20
A.F: 650
Mean: 30
Step-by-step explanation:
Frequency and A.F were just sums of the values mentioned for each
The mean:
Definition: the average of a data.
Formula: sum of numbers divided by the number of numbers
Answer: (28 x 2 + 29 x 4+ 30 x 8 + 31 x 4+ 32 x 2) divided by 20 = 30
Hope this helps
A graphing calculator shows four (4) zeros of
f(x) = sin(2x -9°) -cos(x +30°)
in the range 0° ≤ x ≤ 360°
Solutions are
x ∈ {23°, 129°, 143°, 263°).
_____
You can make use of a couple of trig identities to rearrange this equation.
cos(x) = sin(x+90°)
sin(a) -sin(b) = 2*cos((a+b)/2)*sin((a-b)/2)
So
sin(2x -9°) -sin(x +120°) = 2*cos((3x +111°)/2)*sin((x -129°)/2) = 0
The cosine factor will be zero for
(3x +111°)/2 = n*180° +90°
3x -69° = n*360°
x = 23° +n*120° . . . . . . for any integer n
The sine factor will be zero for
(x -129°)/2 = n*180°
x = 129° +n*360° . . . . . for any integer n
Combined, these solutions give the ones listed above in the range 0..360°.