How much greater is 7/8 than 3/4
2 answers:
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Answer:
The amount of electricity bill is <u>$52.60</u>.
Step-by-step explanation:
Given:
Victoria whit used 578 kwh of electricity.
The rate is 9.1 cents per kw-hr.
Now, to find the amount of her electric bill.
Electricity used = 578 kwh.
Rate of electricity = 9.1 cents per kw-hr.
So, to get the amount we multiply the electricity used by the rate of electricity:
Thus, the amount of electricity bill = 5259.8 cents.
Now, converting the amount from cents to $ by dividing:
$1 = 100 cents.
So, 5259.8 cents ÷ 100 = $52.60 .
therefore, the amount of electricity bill is $52.60.
Answer:
"0.0125" is the right solution.
Step-by-step explanation:
The given values are:
Random sample,
n = 90
Claims,
p = 20%
or,
= 0.20
By using normal approximation, we get
⇒
On substituting the values, we get
⇒
⇒
Now,
The standard deviation will be:
⇒
On putting the above given values, we get
⇒
⇒
⇒
⇒
hence,
By using the continuity correction or the z-table, we get
⇒
⇒
⇒
From table,
⇒