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choli [55]
3 years ago
14

How many positive integers less than 250 are multiples of 5, but not multiples of 10?

Mathematics
2 answers:
SashulF [63]3 years ago
8 0

Answer:

Step-by-step explanations: sometimes 5 times (number) is 250 but in this case your teacher did not tell you to multiply it by 10 but instead multiplying it by 5

oksian1 [2.3K]3 years ago
4 0

Answer:

25

Step-by-step explanation:

Positive integers less than 250 are 1, 2, 3, ..., 248, 249.

Positive multiples of 5 that are not multiples of 10 are integers than end in 5.

5, 15, 25, 35, ...

In each group of 10 consecutive integers, 1 through 10, 11 through 20, etc. there is one integers ending in 5. From 1 to 250, there are 25 groups of 10 consecutive integers, so there are 25 integers that end in 5.

Answer: 25

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Step-by-step explanation:


7 0
3 years ago
Bob discovers a box with 30 identical, used, rechargeable batteries in his attic.
monitta

Answer:

a) All of them are out of charge = 9.31x10⁻¹⁰

b) 20% of them are out of charge = 5.529x10⁻⁴

Step-by-step explanation:

This problem can be modeled as a binomial distribution since

There are n repeated trials and all of them are independent of each other.

There are only two possibilities: battery is out of charge and battery is not out of charge.

The probability of success does not change with trial to trial.

Since it is given that it is equally likely for the battery to be out of charge or not out of charge so probability of success is 50% or 0.50

P = 0.50

1 - P = 0.50

a) All of them are out of charge?

Probability = nCx * P^x * (1 - P)^n-x

Probability = ₃₀C₃₀(0.50)³⁰(0.50)⁰

Probability = 9.31x10⁻¹⁰

b) 20% of them are out of charge?

0.20*30 = 6 batteries are out of charge

Probability =₃₀C₆(0.50)²⁴(0.50)⁶

Probability = 5.529x10⁻⁴

5 0
3 years ago
Answer if you know
fgiga [73]

Answer: i dont know

Step-by-step explanation: im not shur but what to help sorry

7 0
3 years ago
Can someone please help me
salantis [7]

Using Pythagorean theorem

\\ \sf\longmapsto P^2=H^2-B^2

\\ \sf\longmapsto P^2=6^2-5^2

\\ \sf\longmapsto P^2=36-25

\\ \sf\longmapsto P^2=11

\\ \sf\longmapsto P=3.2

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2 years ago
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Answer:

D. 99

Step-by-step explanation:

Well they were losing money so 11 times 9 = 99

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3 years ago
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