6-3y=-6
Move 6 to the other side
Sign changes from +6 to -6
6-6-3y= -6-6
-3y= -6-6
-3y= -12
divide both sides by -3
-3y/-3= -12/-3
Answer: y= 4
The number of weeks can be written as:
168 hours in a week
10,080 minutes in a week
604,800 seconds in a week
Answer:
a) 88.89%
b) 84%
c) 75%
Step-by-step explanation:
We are given the following in the question:
Average price = $3.06 per gallon
Standard deviation = $0.06 per gallon
Chebyshev's Rule:
- According to this rule atleast percent of data lies within k standard deviation of mean.
a) minimum percentage of gasoline stations had prices within 3 standard deviations of the mean
We put k = 3
Thus, minimum 88.89% of gasoline stations had prices within 3 standard deviations of the mean.
b) percentage of gasoline stations had prices within 2.5 standard deviations of the mean
We put k = 2.5
Thus, minimum 84% of gasoline stations had prices within 2.5 standard deviations of the mean.
Range of gasoline price:
c) minimum percentage of gasoline stations that had prices between $2.94 and $3.18
We can express $2.94 and $3.18 as:
We put k = 2
Thus, minimum 75% of gasoline stations had prices between $2.94 and $3.18.
Answer: As a decimal → 0.8
As a fraction→ or
As a percent→ 80%
Step-by-step explanation:
We can write 12 out of 15 in fraction as
Rewrite it in simplest form by dividing 3 from both numerator and the denominator, we get
To write this in decimal form, just divide the numerator by denominator, we get
To write this in percent, multiply the decimal number to 100, we get
9.
( 5 / 8 ) * ( 2 / 3 ) = 10 / 24 = 5 / 12 A ;
10.
( 11 / 12 ) ÷ ( 5 / 7 ) = ( 11 / 12 ) * ( 7 / 5 ) = 77 / 60 = 1 17 / 60 D ;
11.
3 / 8 B;
12.
2 5 / 8 = 21 / 8 ; the reciprocical of 21 / 8 is 8 / 21 C ;
13.
$12.50 * 34.5 =$ 431.25 C ;