Abirthday party host planned for 20 people, but 17 actually attended. what is the percent error?

Step-by-step explanation:

Givens

The percentage error can be found with the following formula:

Where refers to the expected quantity and refers to the quantity in the experiment when it happens.

So, in this case, we can deduct that the true value is 20 and the observed value is 17. Replacing them, we have

Therefore, the percentage error is 15%.

answer: 230 miles ( vote ! )

step-by-step explanation:

180.39 minus 17.99 equals 162.4

then divide 162.4 by .80 to get 230

total amount to be paid = $19.5

step-by-step explanation:

given ,

original price = $25.99

discount = 25%

discount amount = 25% of original price

discount amount = 25/100   * 25.99

discount amount = $6.49

hence , the total amount to be paid = original price - discount amount

                                                            = $25.99 - $6.49

                                                            =$19.5

total amount to be paid = $19.5