The cost of 3 notebooks and 2 pens is $10.45. the cost of 4 notebooks and 6 pens is $17.60. part a: what is the cost of each item? part b: miles needs to purchase some new school supplies. for each notebook he buys he will buy 3 pens. how many notebooks can he purchase if he has $22? i answered this, but i got a negative for my answer does anyone want to tell me how to solve or show me how? if you have the answer that would be great i can just use that to solve my other questions them.

step-by-step explanation:

7.9m and 4.3°

step-by-step explanation:

let east be +x and north be +y, x = distance * cos θ, y = distance * sin θ  

for 3.5 south, y = -3.5  

for 8.2, x = 8.2 * cos 30 and y = 8.2 * sin 30  

for 15 west, x = -15  

total x = 8.2 * cos 30 – 15 ≈ -7.9  

total y = -3.5 + 8.2 * sin 30 = 0.6  

magnitude = [(8.2 * cos 30 – 15)^2 + 0.6^2)]^0.5  

the magnitude is approximately 7.9 m  

tan θ = y/x = 0.6/-7.9  

the angle is approximately 4.3˚ north of west

the answer is -1 for this question

step-by-step explanation:

3x-x+2=4 i think that's is the answer, and i hope it you