Answer:
(x + 2)(x + 9)
Step-by-step explanation:
when given a trionomial, you must multiply the last term (18) by the first term's coefficient.
1 * 18 = 18
then, expand the polynomial by finding two factors that SUM to the middle term's coefficient (11) and MULTIPLY to 18. these factors are 9 and 2.
9 * 2 = 18 and 9 + 2 = 11
expand the equation using these
x² + 9x + 2x + 18
factor by grouping
(x² + 9x)(2x + 18)
x(x + 9)2(x + 9)
remove one of the COMMON parenthetical factors (one factor will have an identical factor, in this case (x + 9))
(x + 2)(x + 9) are left.
Answer:
1) Yes
Product of Means = Product of Extremes
4 × 21 = 7 × 12
84 = 84
2) No
Product of Means = Product of Extremes
2 × 2 = 3 × 3
4 ≠ 9
3) No
Cross multiplying
3 × 6 = 4 × 8
18 ≠ 32
4) Yes
Cross Multiplying
1 × 25 = 5 × 5
25 = 25
The first ratio is 1:4 so if x is 6 then 6x4 is 24 your answer is 24.
Answer:
$66
Step-by-step explanation:
36/12=3
3*2=6
36/9=4
15*4=60