<span>Total mass contains 320g copper. How many parts of 16g copper are there of the total mass of 320g copper? 320/16 = 20. There are 20 portions of 16g copper.
(320/16) * 3 = 60g
There are 60g of zinc in the compound.</span>
The answer is (x, y) = (-1, 4) hope this helped
#a
V={Vowels of English alphabets}
#b
C={cube numbers between 0 to 50}
#c
M={y:y is a multiple of 3 less than 20}
Step-by-step explanation:
a. To get 6 cents, one coin needs to be a nickel and the other coin needs to be a penny.
P = P(nickel then penny) + P(penny then nickel)
P = (4/20) (6/19) + (6/20) (4/19)
P = 12/95
b. To get 35 cents, one coin needs to be a dime and the other coin needs to be a quarter.
P = P(dime then quarter) + P(quarter then dime)
P = (3/20) (7/19) + (7/20) (3/19)
P = 21/190
c. To get 20 cents, both coins need to be dimes.
P = P(dime then dime)
P = (3/20) (2/19)
P = 3/190
The zeros/roots of the functions are -2, 6, and 7.