Edgeunity sample response:
<span> First, the student should estimate the cost of attending a two-year program. Then she should plan to save part of that cost. Finally, she should determine how much to budget for periodic deposits.</span>
Answer:
Here is the full question
E = 420 − 7
s The elevation, E , in meters, of a skydiver s seconds after parachute activation is given by the equation above. What is the best interpretation of 420 as shown in the equation?
a) The skydiver started diving at an elevation of 420 meters.
b) The skydiver activated the parachute at an elevation of 420 meters.
c) The skydiver took 420 seconds after parachute activation to reach the ground.
d) The skydiver's elevation decreased by 420 meters per second after parachute activation.
Explanation:
Answers is that The skydiver's elevation decreased by 420 meters per second after parachute activation.
Answer:
3 groups of 5
Explanation:
if x is the number of groups of four, and y is the number of groups of five, then 4x +5y =39 (four students per group of four times the # of groups of four, and 5 students per group times the # of groups of five, which should equal the total amount of students, 39). also, x+y=9. (number of each type of group = 9 groups total).
then, use these two equations and solve for y, by "canceling out" x. there are many ways to do this, but i'm going to use subtraction.
4x-5y=39
x+y=9
you want to change the equation
x+y=9
into
4x+4y=36
by multiplying the whole equation by four. because in order to cancel out the x, you need it to equal zero. in the first equation, its 4x.
so its now
4x-5y =39 MINUS
4x+4y=36
___________
y=3
you can check your work because the remaining 6 groups of four (24 total students) plus the 3 groups of five (15 total students) adds up to equal 36
What you would first do is take each price and subtract it to get for the Shirt $14.04, The Tie would be $9.36, & the pants would be $27.30. Now add that all up to get $60.63 which would be the Selling Price!
Hope this helped :)
