Mathematics, 22.07.2019 18:00, mxlx27

The admission fee for a charity event is $7 for children and $10 for adults. the event was attended by 700 people, and the total amount collected in admissions was $6,400. there were _children and _adults at the show.

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If all were children, revenue would be 700*$7 = $4900. Revenue is actually $6400 -4900 = $1500 more than that. Each adult admission that replaces a child's admission adds $10 -7 = $3 to the revenue, so there must have been
$1500/$3 = 500 . . . . adult admissions

There were 200 children at the show.
There were 500 adults at ths show.

answered: Serenitybella

Hello!

You can make two expressions based on what you know

let x stand for the amount of children
let y stand for the amount of adults

x + y = 700
7x + 10y = 6400

You can multiply the first equation by 10 to be able to use elimination

10x + 10y = 700
7x + 10y = 6400

Subtract the two equations from each other

3x = 600

Divide both sides by 3

x = 200

Put x into one of the original equations to get y

200 + y = 700

Subtract 200 from both sides

y = 500

The answers are 200 children and 500 adults

Hope this helps!

answered: Guest

a) one student is chosen from classroom a, then a student is chosen from classroom b.

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b. this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes. this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes. this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes. this makes them dependent events.

answered: Guest

if gloria has "carry over" minutes, (that is, any minutes paid for but not used in a month can be applied to her payment for minutes in the next month,) her total usage for the three months is: total minutes = 320 + 243 + 489 = 1052 minutes number of 200 minute blocks = 1052/200 = 5 r52 (that is 5 with a remainder of 52) rounding up the number of 200 minute blocks gives her usage for the three months as 6 blocks. the cost for six blocks is 6 x $25 = $150 she also has 200 - 52 or 148 carry over minutes if gloria pays each month and unused minutes are lost, applying the rounding up procedure to each month gives: first month usage of 320 minutes rounds up to 2 blocks of 200 minutes for a payment of 2 x $25 = $50 second month usage of 243 minutes rounds up to 2 blocks of 200 minutes for a payment of 2 x $25 = $50 third month usage of 489 minutes rounds up to 3 blocks of 200 minutes for a payment of 3 x $25 = $75 total payments for the three months are $50 + $50 + $75 = $175 get the plan with carry over minutes!

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The admission fee for a charity event is $7 for children and $10 for adults. the event was attended...