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notka56 [123]
3 years ago
12

How many integers between 1-100 are divisible by 3 or 5 or 7?

Mathematics
1 answer:
lina2011 [118]3 years ago
7 0
3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 63 66 69 72 75 78 81 84 87 90 93 96 99 = 33

5 10 20 25 35 40 50 55 65 70 80 85 95 100 = 14
7 14 28 49 56 77 91 98 = 8

So 55 numbers are divisible by 3 or 5 or 7. 
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grandma gigi gave leyla a rare purple stone for her sweet 16 birthday. at that time,the stone was worth$245. it has been increas
sergij07 [2.7K]
This is a compound interest problem, therefore s(t) should be in the form:
s(t) = a(r)^{t}

where: 
t = time in years
s(t) = the value of your item after t years
a = the initial value of your item
r = rate

Therefore, we already know that a = 245$.

Now, we can calculate r:
r^{t}=\frac{s}{a}
r =  \sqrt[t]{ \frac{s}{a} }
r = \sqrt[5]{ \frac{560.50}{245} }
     = 1.18

Therefore, the correct answers are a = 245 and r = 1.18

4 0
3 years ago
What is the value of x?
Tresset [83]

Answer:

i think its 8

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
If you sleep for 9 h one night, what fractional part of a day did you spend sleeping?
Angelina_Jolie [31]

Answer:

3/8 of the day

Step-by-step explanation:

A day is 24 hours

You spend 9 of them sleeping

The fraction you spend sleeping is

9/24

You can simplify the fraction by dividing the top and bottom by 3

9/3 = 3

24/3 = 8

3/8

7 0
3 years ago
You want to estimate the mean amount of time college students spend on the Internet each month. How many college students must y
KonstantinChe [14]

Answer:

752.95

Step-by-step explanation:

Data provided in the question

The standard deviation of population = 210

The Margin of error = 15

The confidence level is 75%, so the z value is 1.96

Now the required sample size is

= 1.96^2\times \frac{210^2}{15^2}

= 752.95

Hence, the number of college students spends on the internet each month is 752.95

Simply we considered the above values so that the n could come

8 0
3 years ago
5 feet 8 inches equals how many inches
sweet [91]
There are 12 inches in a foot. To find how many inches are in 5 feet, multiply by 12:

5*12 = 60 inches

Add the 8 additional inches:

60 + 8 = 68 inches

The answer is 68.
3 0
3 years ago
Read 2 more answers
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