Answer:
a
Step-by-step explanation:
Answer:
$1.20 per chocolate bar
Step-by-step explanation:
$18/15 choco bars
xxx=$18.00/15 bars
$18.00/15/bars
$1.20/bars
Answer: It helps because you already know it off the top of your head and you are able to break up a multiplication problem step by step in your head.
Step-by-step explanation:
To solve this, we need to use the z test. The formula for
z score is:
z = (x – u) / s
where x is sample value = 141.4 mm and above, u is mean
value = 140 mm, s is standard dev = 8 mm.
z = (141.4 – 140) / 8
z = 0.175
From the standard probability tables, the p value at z =
0.175 using right tailed test is:
P = 0.4306
The Value of X is 10.
KhanAcademy.org has some great explanation videos on their website and they have a YouTube channel.
Here is an explanation for the answer.