3x-2y=7
3x=7
x=7/3
-2y=7
y=-7/2
so...(7/3,-7/2)
40+20=60 +4= 64 that is the answer
Answer:Answer: A negative correlation shows the relationship between two variables.
Step-by-step explanation: A) the correlation between the average SAT scores and percentage of high school seniors r = - 0.89 shows that the direction is negative and the relationship is strong.
B) SAT score = (-0.89 * proportion taking) + average score
Answer:
15
Step-by-step explanation:
Answer:
$0.21/lb
Step-by-step explanation:
We are to find the price per pound:
Number of tons given = 2 tons;
1US ton contains 2000lb
2 tons will have mass of 2 x 2000 = 4000lb
price = $840
So';
Price per pound = 
= $0.21/lb
