math

posted by .

1) If y=kx, where k is a constant, and y=128 when x=16, what is the value of y when x is increased by 25%?

(I got 160?)

2) Aaron calculates using a certain foot and line spacing, that each page of a typed document contains at least 240 words and at most 260 words. What is the least number of pages needed for a 12,000-word document?

(I got 50 pages)

3) How many solutions to the equation 4 cos x=1 lie between x=0 and x=3(pi)

A)2
B)3
C)4
D)6

(^I don't understand this)

  • math -

    cosx=.25

    sketch the cosine curve over two cycles.
    well, you really want to look at only 1.5 cycles. How often does it equal .25? I see three in my sketch.

  • math -

    how do you draw cycles? Or graph/sketch the equation?
    Are number 1 and 2 correct?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math

    Reasoning To measure the length of a closet, Aaron used his foot and measured 6 foot-lengths. His father measured 4 foot-lengths. Could they be measuring the same closet?
  2. Math

    How much did Aaron start with? Aaron spent 3/7 of his money. He gave ¼ of the remainder to his sister. He had $120 left. How much money did he have in the beginning?
  3. math

    How much did Aaron start with? Aaron spent 3/7 of his money. He gave 1/4 of the remainder to his sister. He had $120 left. How much money did he have in the beginning?
  4. math

    How much did Aaron start with? Aaron spent 3/7 of his money. He gave 3 of the remainder to his sister. He had $120 left. How much money did he have in the beginning?
  5. Math

    How much did Aaron start with? Aaron spent 3/7 of his money. He gave ¼ of the remainder to his sister. He had $120 left. How much money did he have in the beginning?
  6. Math

    How much did Aaron start with? Aaron spent 3/7 of his money. He gave ¼ of the remainder to his sister. He had $120 left. How much money did he have in the beginning?
  7. Pre-Calculus(Trignometry)

    There are 3 airports, A , E and G. G is 200km from A.E is 160 km from A From G the bearing of A is 052 degrees. From A the bearing of E is 216 degrees. What's the distance between A and G?
  8. Math

    Aaron's father is nine times as old as he is. One year ago, he was two years more than eleven as old as Aaron. Find Aaron's present age.
  9. Math

    Aaron and Alex decide to race from Tim Hortons to Alex's house. Aaron wins by 3/4 of a minute. If it took Alex 3.6 minutes, how long did it take Aaron?
  10. Math

    The list below gives the number of patrons per day over a 30-day period during July at a theatre. 127 126 125 132 128 122 156 172 183 171 160 140 154 160 122 187 185 158 112 145 168 187 117 120 171 171 156 163 168 162 a) Find the mean …

More Similar Questions