The derivate of cos(pi*t/4) is
<span>-sin(pi*t/4)(pi/4).
Please note that this derivate is negative. I hope this can be helpful</span>
Answer:
A: she charges a flat fee of $125
Step-by-step explanation:
The $125 is a fee that is not associated with hours worked. There is insufficient information in the problem statement to tell the reason for that fee, except that we know it is not the hourly charge. Perhaps the best assumption is that it is a flat fee.
Apparently, she charges a flat fee of $125.
Answer:B: 36°
Step-by-step explanation:
We know that ∆ABC is isoceles, making (angle)<ABC and <BCA congruent because base angles of isoceles triangles are congruent.
Because we have parallel lines, we can look for alternate interior angle pairs. <BCA is congruent to <DAC because they're alternate interior angles.
If <BCA is x then so is <ABC.
Since triangles add up to 180° we can add all of the angles (3x+x+x) and set it equal to 180.
3x+x+x=180
5x=180
x=36
If we were looking for <BAC we would plug that back in and solve, but we're looking for <BCA which is equal to x, therefore m<BCA=36°
Answer:
????
Step-by-step explanation: