The answer would be 3x - 5
Hope this helps!!!
Answer:
A.) 52%
Step-by-step explanation:
14+12=26
26/5=5.2
you now have 5.2, then you take the decimal and move it over to make a percentage.
Answer:
0.44444444444, round it to the tenth or hundredth or wherever it tells you to round the answers to.
Answer:
7.5/5 = 1.5
6/1.5 = 4
X = 4
I'm pretty sure it's right
Let x be the mass of the paperbacks and y be the mass of the textbook.
20x + 9y = 44.4 ----------- (1)
25x + 10y = 51 -------------(2)
(1) x 10:
200x + 90y = 444 --------(1a)
(2) x 9:
225x + 90y = 459 --------(2a)
(2a) - (1a):
25x = 15
x = 0.6 -------- sub into (1)
20 (0.6) + 9y = 44.4
12 + 9y = 44.4
9y = 44.4 - 12
9y = 32.4
y = 3.6
So the paperback's mass is 0.6 pounds and textbook is 3.6 pounds
