The answer is 134 because 15 times 24 is 360 and 12 times 18 is 216 and 360-216 is 134
Answer:
as written: 2500.2
as intended: 3000
Step-by-step explanation:
20% = 0.2, so adding 0.2 to 2500 gives 2500.2
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We suspect you want to add 20% of 2500 to 2500. That is ...
2500 + 20%×2500
= 2500 + 0.20×2500
= 2500 + 500
= 3000
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<em>Comment on percentages</em>
A percentage is a pure number. It is a ratio of like quantities, so has no units.* A <em>useful</em> percentage always has a base. That is, it is a percentage <em>of something</em>. Sometimes that base may be unclear or unstated, in which case the percentage might very well be considered to be meaningless.
In any event, a percentage is simply a (unitless) fraction. The "%" symbol means the same thing as "/100", so 20% means 20/100 = 2/10 = 1/5.
The very clear math expression 2500 +20% means simply 2500 + 1/5, which is the mixed number 2500 1/5 or the decimal value 2500.2. Usually, when we want to add a percentage to some value, we want the percentage to be <em>of the original value</em>. When that is written as a math expression, it must show this:
2500 + 20% of 2500
2500 + 20%×2500
2500(1 +20%)
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* The concentration or potency of some medicines or other mixtures may be expressed as a percentage that is the ratio of one unit to a different unit, typically weight per volume. That is, a "0.1%" preparation may be 0.1 grams per 100 mL, for example. You have to read the label to determine whether this is the case. Mathematically, this is not a percentage, but is a non-standard use of the "%" symbol to indicate a ratio to 100 of something.
Answer:
15 ways.
Step-by-step explanation:
We have been given that a college needs two additional faculty members. We are asked to find the number of ways in which these positions can be filled if there are five applicants for the chemistry position and three applicants for the statistics position.
We will use combinations for solve our given problem.
, where,
n = Number of total items,
r = Items being chosen at a time.
Therefore, the positions can be filled in 15 ways.
11/18 is the correct answer:))
Let x = the number of ride you went on
$79 = $15 + $8x
To solve for how many rides you went on, subtract 15 from each side.
$64 = $8x. Divide each side by 8.
8 = x.
You went on 8 rides
