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3 years ago

Please help!!! Will mark brainliest!

Mathematics

1 answer:

Ksenya-84 [330]3 years ago

5 0

Answer:

4, 11

Step-by-step explanation:

Q# 13 :

Let the first number be 'x'

the 2nd number would be ' x + 7'

x + x + 7 = 15

2x= 15-7

x= 8/2

x= 4

2nd number: x + 7

= 4+7

= 11

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They are essentially the same.

Step-by-step explanation:

A mixed number can be written as an improper fraction.

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3 years ago

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The answer would be 1)

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4 years ago

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Please answer correctly !!!!!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!! URGENT !!!!!!!!!!!!!!!!!!!

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"Hang time" is the time you are suspended in the air during a jump. Your hang time t in seconds is

Artyom0805 [142]

Answer:

2.5/5V

Step-by-step explanation:

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3 years ago

Our class has 50 students. Assuming that no students are born on leap days (February29), what is the probability that no two stu

madreJ [45]

Answer: a) $\dfrac{799}{31250}$ b) $\dfrac{30451}{31250}$

Step-by-step explanation:

Since we have given that

Number of days in a year = 365

Number of students = 50

Probability that no two students share the same birthday. It means each student has different birthday.

Probability(no two students share the same birthday) $=\dfrac{365-1}{365}\times \dfrac{365-2}{365}........\times \dfrac{365-50}{365}$

Probability(no two students share the same birthday) $=\dfrac{^{365}P_{50}}{365^{50}}$

Probability(no two students share the same birthday) $=\dfrac{799}{31250}\approx 0.025568$

Probability that at least one of the students has the same birthday as another student in the class is given by

$1-P(\text{no student share the same birthday})\\\\=1-\dfrac{799}{31250}\\\\=\dfrac{30451}{31250}=0.974432$

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4 years ago