See the figure attached to better understand the problem
we now that
in the triangle ABC
tan alfa=126/120----------> 1.05
alfa=arctan (1.05)-------> alfa=46.40°
in the triangle ADC
sin alfa=DC/120----------> DC=sin(46.40°)*120---------> DC=86.90 units
the answer is 86.9 units
Answer:
The monthly cost be if you typically talk for 550 minutes per month would be 28.
Step-by-step explanation:
The monthly cost is function of the time t, in minutes, is given by the following equation.
In which is the fixed cost and a is the cost of the minute.
pt&t has a special plan offer this month. there is a 6.00 per month charge each month and calls everywhere in the united states are 0.04 per minute.
This means that . So
what would the monthly cost be if you typically talk for 550 minutes per month
This is C(550).
The monthly cost be if you typically talk for 550 minutes per month would be 28.
Two divided by a number yields fourteen would be represented by the equation 2/y=14, and that is not right. So, the answer would be the third answer choice
There is a special kind of substitution which some books call it by comparison.
When the two equations are both
y=some function of x
y=some other function of x, then
we can substitute the second equation into the first giving
some function of x = some other function of x and start solving.
For example,
<span>y = –2x + 8
y = x – 1
substitute second into first
x-1=-2x+8
isolate x on left,
3x=9
x=3
second step is to substitute x=3 into second equation to get
y=x-1=3-1=2
Therefore the solution is (3,2)</span>
36 divided by 3= 12, 3x12=36 and 12x3=36 divided by 3=12 and 36 divided by 12=3