Answer:
(x + 7)^2 = 64
Step-by-step explanation:
x^2 + 23x – 19 = 9x - 4
x^2 + 23x - 9x = -4 + 19
x^2 + 14x = 15 = 0
Completing the square:
(x + 14/2)^2 - (14/2)^2 = 15
(x + 7)^2 - 49 = 15
(x + 7)^2 = 64
Answer:
(x + 6)(x - 3)
Step-by-step explanation:
Answer:
D. alternate exterior angles
Step-by-step explanation:
Neither of the angles is between parallel lines a and b, so they are "exterior." They are on opposite sides of transversal c, so are "alternate".
∠2 and ∠7 are <em>alternate exterior</em> angles.
Answer:
y = 20x + 280
Step-by-step explanation:
The linear equation that represent your account balance is as follows:
Your friend
y = 25(6) + 250
= 400
And,
You
400 = m(6) + 280
6m = 400 - 280
6m = 120
m = 20
Now the equation of the account balance is
y = 20x + 280
Hence, the linear equation that represent your account balance is y = 20x + 280
Class A Class B
1 2 3 4 5 6 7 8 4 1 2
2 3 4 9 5 9
1 1 4 8 6 2 4 9
1 7 1 5 7 8 8
2 5 8 0 3 4 4 6 6 7
0 9 2 2 5
<u>Mode and Mean for Class A</u>
Mode: 61
Mean: 57.8
<u>Range and Median for Class B</u>
Range: 54
Median: 78