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Keith_Richards [23]

3 years ago

13

There are 75 students in a speech contest. Yesterday, 2/5 of them gave their speeches. Today, 2/3 of the remaining students gave

their speeches. How many students still haven't given their speeches?

1 answer:

natali 33 [55]3 years ago

6 0

2/5 x 75= 30
2/3 x 30= 20
STUDENTS WHO GAVE SPEECH= 30+20=50
REMAINING=75-50= 25

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Ber [7]

Answer:

50

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prohojiy [21]

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Step-by-step explanation:

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for t = 3

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for t = 10

$(1.045)^{10} = 1.55 \ngeq 2$

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for t = 12

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for t = 13

$(1.045)^{13} = 1.77 \ngeq 2$

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$(1.045)^{15} = 1.93 \ngeq 2$

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