-.5x^2 = -6x + 20
-.25x = -6x + 20
+6x +6x
5.75x = 20
/5.75 /5.75
x = 3.48
Answer:
b. 4+7x-2
Explanation:
when you add like terms for the first equation it becomes 7x-6
the second one becomes 7x+2
the third one becomes 7x-6
and the last one is also 7x-6
which means the second one is not equivalent
Answer:
10. (5, 6)
11. (1, 2)
12. (7, 8)
13. (10, 11)
14. (27, 28)
15. (11, 12)
Step-by-step explanation:
If you're not familiar with the squares of small integers, your calculator can help you figure this.
10. √28 ≈ 5.291 . . . . between 5 and 6
11. √3 ≈ 1.732 . . . . between 1 and 2
12. √59 ≈ 7.681 . . . . between 7 and 8
13. √115 ≈ 10.724 . . . between 10 and 11
14. √772 ≈ 27.785 . . . . between 27 and 28
15. √140 ≈ 11.832 . . . . between 11 and 12
Y=65
X=5
X=12
Y=?
65—->5
?——>12
Cross multiply
Y= (65x12) / 5
Y= 780 / 5
Y= 156
To check add the Y value in and remove an X value
65——> ?
156 ——> 12
Cross multiply
X= (12x65) / 156
X= 780 / 156
X= 5
You got the right answer. Hope this helped.
Answer: 94.3%
Step-by-step explanation:
Average daily attendance = total sum of attendance ÷ frequency
=754.4/8
= 94.3%
