Answer:
-1/2
Step-by-step explanation:
sin(30 degrees) = sin (pi/6) = 1/2
cos(30 degrees) = cos (pi/6) = [sqrt(3)]/2]
sin (60 degrees) = sin(pi/3) = [sqrt(3)]/2]
1/2 - [sqrt(3)/2] / [sqrt(3)/2] = -1/2
Answer:
-2a +11b
Step-by-step explanation:
3(a+2b) - 5(a-b)
we apply distributive property:
3*a + 3*2b - 5*a + 5*b
3a+ 6b -5a +5b
-2a +11b
11 QUIZ
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Question 1
Use the graph below to determine whether each system is consistent or inconsistent and if it is independent or dependent.
x + 3y=3
|2x - y=-3
y=3
| 4x - 2y = -6
x
+ y=-
x+y=3
x+y=-3
a consistent and dependent
b. consistent and independent
e inconsistent
When multiplying variables , the rule is: if the bases are the same,
Keep the base and ADD the powers.
r^2 * r^1 * r^5
Notice that the r with no power written is an assumed power of 1.
r^8 is the answer
Step-by-step explanation:
do you have a chart
to find probability is to add up all the numbers on the chart or the question that have been ask
when the question ask "draw or chance" you do this
example: Jack has 7red marbles 4 green, 2 yellow and 5 grey in a bag what is the chance of him pulling out 7 red marbles?
Well you would add up every number you see there
7+4+2+5=18
the question what is the chance the chance is the number over the amount of marbles that are in the bag
answer= 7/18
