Answer:
The first one?
Step-by-step explanation:
sorry if im wrong
Answer: d) 2730
<u>Step-by-step explanation:</u>
1st movie and 2nd movie and 3rd movie
15 videos × 14 remaining videos × 13 remaining videos = 2730
You need to use a system of equations with 2 variables
where x= # of paintbrushes bought
and y= # of paint units bought
the first equation would be
.95x+.99y=4.87
Usually there is more information given in these problems so that you can make the second equation. Did the problem say how many total items were bought or anything else because given this information you cannot make a second equation and therefore cannot solve for both variables. Also, the wording is unclear, did she spend 4.87 on just paintbrushes or both brushes and paint.
Answer:
1/4
Step-by-step explanation:
using the product-to sum formulas, this is
1/2 (cos(75+15) + cos(75-15))
