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3 years ago

kelly answered 3 items on a test incorrectly. this was 6% of the items. How many items were on the test?

Mathematics

1 answer:

Delicious77 [7]3 years ago

7 0

Answer:

Step-by-step explanation:

This is my reasoning:

There were 100 questions she would have answered 6 incorrectly. We now that she answered 3 incorrectly so it must have been 50 questions.

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Find the value of x.<br> B<br> 10-X<br> 3<br> D<br> х<br> 2.<br> A<br> С<br> x = [?]

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Answer:

3/(10-x) = 5/(10-x+x)

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3 years ago

STOP!

maksim [4K]

1. you would take 36×1/4 and then it would equal 9

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3 years ago

1-116 1.2.6

ankoles [38]

Answer:

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Step-by-step explanation:

$\begin{array}{rcl}\text{No. of adults} & = & \text{No. of visitors} \times \text{Fraction who are adults}\\& = & \text{100 visitors} \times \dfrac{\text{3 adults}}{\text{10 visitors}} \\& = & \textbf{30 adults}\\\end{array}$

If five-eighths of the prizes were dolls, then three-eighths of the prizes were not dolls.

$\begin{array}{rcl}\text{No. not dolls} & = & \text{No. of prizes} \times \text{Fraction not dolls}\\& = & \text{64 prizes} \times \dfrac{\text{3 not dolls}}{\text{8 prizes}} \\& = & \textbf{24 not dolls}\\\end{array}$

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3 years ago

The total dinner bill for five persons at a restaurant was $203.25. What was the average cost per person in dollars ?

Norma-Jean [14]

Hello! To find the average of something, multiply the total of something by the number of units. In this case, we divide the total bill by 5 people to get the average cost per person. 203.25/5 is 40.65. There. The average cost of dinner per person was $40.65.

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3 years ago