Answer:
(40+4)+(40+48)
=40+(4+8)+4+8(40)
=44+48+12×40
if u add all
=104×40
=4160
Step-by-step explanation:
Answer:
6kg pure copper and 30 kg 10% copper was mixed to give 36kg of 25% alloy
Step-by-step explanation:
Here, we want to produce 36 kg of 25% alloy
Let the Pure copper be x kg while 10% alloy be y kg
Pure copper is simply 100% copper
Thus;
x + y = 36 •••••(i)
Then;
100% of x + 10% of y = 25% of 36
= x + 0.1y = 9 •••••• ii)
From i x = 36-y
from ii, x = 9-0.1y
Equate both x
36-y = 9-0.1y
36-9 = 0.1y + y
0.9y = 27
y = 27/0.9
y = 30
x = 36-y
x = 36-30
x = 6 kg
Answer:
7/80 is the answer because there are 7 possible chances she can get a red or blue gumball.
Step-by-step explanation:
Answer:
B. H1= b1=0
Step-by-step explanation:
the alternative hypothesis is correct
Answer:
x=0, y=3
x=5, y= 2
Step-by-step explanation:
