In a class of pupils, 4 play the flute and piano,
15 play the flute only.
8 play the piano on...
Mathematics, 23.02.2021 16:40 ten55
In a class of pupils, 4 play the flute and piano,
15 play the flute only.
8 play the piano only.
12 play neither instrument.
How many pupils are in the class?
Answers: 2
Mathematics, 21.06.2019 19:00
Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 20 = x a. 5, 4 b. -5, -4 c. -5, 4 d. 5, -4
Answers: 2
Mathematics, 21.06.2019 21:40
The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?
Answers: 2
Mathematics, 22.06.2019 00:30
The water company charges a residential customer $41 for the first 3,000 gallons of water used and $1 for every 200 gallons used over 3000 gallons. if the water bill was $58 how many gallons of water were usedanswersa 3400 gallonsb 6000 gallonsc 6400 gallons d 7000 gallons
Answers: 2
Mathematics, 22.06.2019 02:00
Aiko jumped rope for 20 min and stopped at 8: 05 when did she start
Answers: 1
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