A^2 + b^2 = c^2
9^2 + b^2 = 15^2
81 + b^2 = 225
225 - 81 = b^2
144 = b^2
square root of 144 = 12
b = 12
Answer: x² - x - 12
Step-by-step explanation: When multiplying two binomials together, we can use the F.O.I.L. method.
<em>First, Outer, Inner, Last</em>.
We take the product of the first terms which is x² plus the product of the outer terms which is -4x plus the product of the inner terms which is 3x plus the product of the last terms which is -12.
So we have x² - 4x + 3x - 12.
Simplifying from here by combing the middle terms, we have x² - x - 12.
Pay very close attention to your positives and negatives as you F.O.I.L. because this is the area where most mistakes occur.
Answer:
G (4 , -4)
Area CDEF : 176
Step-by-step explanation:
CD ⊥ x axis
FE ⊥ x axis
Point G (x , y) x = 4 and y = -4
G (4 , -4)
CD = 5 + 4 = 9
FE = 7 + 6 = 13
DG = 12 + 4 = 16
Area CDEF = (Cd + FE) x DG / 2 = (9 + 13) x 16 /2 = 176
Answer:
$28.50
Step-by-step explanation:
21 chicken wings= $39.90
1 chicken wing= 39.90÷21= $1.90
15 chicken wings= 15×1.90= $28.50
