Answer:
x = 15
Step-by-step explanation:
x multiplied by 0.4 = 6
so you divide 0.4 by each side
x = 6/0.4
and plug that into the calculator.
2b is basically 2 * b. When a number (called the coefficient) and a variable come together they multiply.
P(brown hair) + P(blue eyes) - P(brown hair and blue eyes) + P(neither brown hair nor blue eyes) = 30
15 + 17 + 6 - P(brown hair and blue eyes) = 30
P(brown hair and blue eyes) = 38 - 30 = 8
Therefore, there are 8 students that have brown hair and blue eyes.
anything.
I need at least 20 characters, so: blablabla.
;)