3 years ago

Help on these precalc problems 14-20

1 answer:

7 0

15) factor out cos: cos(x)(sin(x)+1)=0
Now this is true when either cos(x)=0 (x=pi/2 and 3pi/2)
Or when sin(x)=-1 (x=3pi/2)
So it's solutions are pi/2 and 3pi/2

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6. Josh has a $250 gift card to Under Armour.

Komok [63]

Answer:

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Step-by-step explanation:

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3 years ago

Tree pruning company A charges a one-time $100 equipment fee and charges $50 for each tree that it prunes. Tree pruning company

kobusy [5.1K]

The total cost that a customer should incur in its dealings with company A should be,
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3 years ago

Read 2 more answers

A middle school held a Career Exploration Day where students could choose to hear an adult talk about his or her career. 15 stud

mash [69]

Answer:

5/12

Step-by-step explanation:

15 students went to hear the doctor speak and 21 students went to other sessions

How many students are there? 15 + 21 = 36 students

Therefore, the probability to randomly select a student that went to hear the doctor is $\frac{15}{36}$ , then simplifying it by 3 is $\frac{5}{12}$ .