Given:
The inequality is
To find:
The step that is missing in the resolution of the given inequality.
Solution:
Step 1: The equation provided.
Step 2: Subtract 8x from both sides.
Step 3: Add 4 to both sides.
Step 4: Divide every side by -2, reversing the sign of the inequality because we are dividing by a negative number.
Consequently, the missing step is .
Answer:
m = - 3
Step-by-step explanation:
a³ + 27 can be recognized as a sum of cubes, which factors generally as
a³ + b³ = (a + b)(a² - ab + b²). Therefore:
a³ + 27
= a³ + 3³
= (a + 3)(a² - 3a + 9).
By comparing a² - 3a + 9 to a² + ma + 9, we find that
m = - 3.
There are seven rainbow colors: red, orange, yellow, green, blue, indigo, and violet, so 7 possible choices. When two events occur in sequence, multiply their probabilities. With replacement: P(violet)=1/7 and P(orange)=1/7, so P(violet then orange)=1/7 * 1/7 = 1/49. Without replacement: after picking violet, P(orange)=1/6, so P(violet then orange)=1/7 * 1/6 = 1/42.
