9514 1404 393
Answer:
51
Step-by-step explanation:
Let s represent the number of seats in a row. Then the number of rows is (s-9) and the total number of seats is ...
s(s-9) = 2142
s² -9s +4.5² = 2142 +4.5² . . . . . complete the square
(s -4.5) = √2162.25 . . . . . . . . take the positive square root
s = 4.5 +46.5 = 51 . . . . . . . add 4.5
The number of seats in each row is 51.
Answer:
1.4, associative prop.
Step-by-step explanation:
because it asks for liters of total juice, you can add 0.75, 0.60, and 0.25 together then subtract 0.20. the equation can be 0.75+0.6+0.25-0.2
associative propery means no matter how you group numbers, the outcome will come out the same. for example, if we did 0.75+0.6+(0.25-0.20) and did the parenthesis first, we would get 0.75+0.6+0.05, which comes out to 1.4. hope this helped!
The side that has length 24 equals to 4y + 8
24 = 4y + 8
24 - 8 = 4y
16 = 4y
y= 16÷4
y = 4
The side that has length 31 equals to 7x - 4
7x - 4 = 31
7x = 31 + 4
7x = 35
x = 35 ÷ 7
x = 5
Answer:
he earns $7 per hour
Step-by-step explanation:
