Answer: There are 69 adults and 72 children went to the concert.
Step-by-step explanation:
Let x be the number of adults, and y be the number of children.
x + y = 141
3.5x + 2.5y = 421.5
x + y =141
x = 141 - y
3.5(141 - y) + 2.5y = 421.5
493.5 - 3.5y + 2.5y = 421.5
493.5 - y = 421.5
-y = -72
y = 72
x + y = 141
x + 72 = 141
x = 69
Graph the equation in a graphing calculator or in the table in a regular calculator and look for the zero on the x axis and the y axis
You would plug in twenty eight point nine to the q. So it would be five point one plus twenty eight point nine divided by three point four, which equals thirteen point six.
I’m not sure if I’m correct but I think it is 2^21
Answer: y = 9x
Step-by-step explanation:
Li needs to use 9 beads for each inch of necklace.
X = Length of Necklace
Y = Number of beads needed
y = 9x
For instance, assuming a necklace is 8 inches long, how many beads will be needed;
= 9x
= 9 * 8
= 72 beads
