The number "x" is given by:
Therefore, we have:
Answer:
7 because to get the mean it has to be in the middle which comes down to the Number 9 package so that means the the 8th package has to be 7 pounds
Step-by-step explanation:
Answer:
A,B,C,D
Step-by-step explanation:
Mark the unknown number as x
Now the long side is x-3 inches
S=long side*short side=(x-3)*2=2x-6 square inches
S < 12 so
2x-6 < 12
2x < 12+6
2x<18
x<9
2<4<6<8<9
Answer:
40 gallons of water and 140 gallons premium antifreeze
Step-by-step explanation:
Let p represent the number of gallons of premium antifreeze in the mix. Then 180-p is the number gallons of water. The amount of pure antifreeze in the mix is then ...
0.90p + 0·(180 -p) = 0.70·180
p = 0.70·180/0.90 = 140 . . . . divide by the coefficient of p
180-p = 40 . . . . . find the water content
40 gallons of water and 140 gallons of premium antifreeze are in the mix.