yoko pays $19.60 for a pack of 4 towels. find the unit price in dollars per towel if necessary round your answer to the nearest
2 answers:
Answer:
$4.9
Step-by-step explanation:
<u><em>yoko pays $19.60 for a pack of 4 towels. find the unit price in dollars per towel if necessary round your answer to the nearest cent</em></u>
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We can use proportion to determine the unit price per towel
$19.60 = 4 towels
x = 1 towel
cross multiply
4x = $19.60
Divide both-side of the equation by 4
= $
( 4 on the numerator will cancel-out 4 at the denominator at the left-hand side of the equation leaving us with just x while 19.60 will be divided by 4)
x = $
x = $4.9
Therefore, the unit price per towel is $4.9
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Kayla buys two pairs of jeans for j dollars each and one shirt for 15 dollars. The cost of one pair of jeans is $22.5 (twenty-two dollars and fifty cents)
From the given information
- Let the cost of two pairs of jeans be 2j
- The cost of 1 shirt = 15
- Total amount to spent = $60
∴
The equation is said to be expressed as:
- 2j + 15 - 60 = 0
Collect like terms
- 2j = 60 - 15
- 2j = 45
Divide both sides by 2
- j = 22.5
Therefore, we can conclude that the cost of one pair of jeans is $22.5 (twenty-two dollars and fifty cents).
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Answer: Mean = 20 and standard deviation = 4
Step-by-step explanation:
Let x represents the success of getting the correct answer.
Here, the total number of trials(n) = 100
The probability of getting the correct answer, p = 1/5
Thus, the mean of the number of correct answer,
Now, the standard deviation,
Thus, First option is correct.