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koban [17]
3 years ago
9

A pet store has 9 dogs, 6 cats, 8 gerbils, and 7 parrots. A pet is chosen at random. What is the probability of choosing a cat o

r dog?
Check comments for answers to choose from
Please answer fast
Mathematics
1 answer:
podryga [215]3 years ago
6 0
9/30 for dogs and 6/30 for cats
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How many terms are there in a geometric series if the first terms is 2, the common ratio is 4, and the sum of the series is 2,73
arsen [322]
The sum of n terms of a geometric series is given by
S_{n}=a_{1}\dfrac{r^{n}-1}{r-1}

Substituting the given numbers, you have
2730=2\dfrac{4^{n}-1}{4-1}\\\\2730\dfrac{3}{2}=4^{n}-1\\\\4096=4^{n}\\\\\dfrac{\log(4096)}{\log(4)}=n=6

There are 6 terms in the series.
4 0
3 years ago
What is the common ratio of the geometric sequence (-3,-9, -27,-81.....}*
Marianna [84]
Divide any term by the term before it, and you'll get the common ratio of the geometric series.

-81/-27=3
The common ratio is 3.
5 0
3 years ago
Read 2 more answers
#3 need help with this math problem please.
kupik [55]

Answer:

undefined

Step-by-step explanation:

f(x) = 2/ (-5x-10)

Let x = -2

f(-2) = 2/ (-5(-2)-10)

         =2/(10-10)

         =2/0

         = undefined

5 0
3 years ago
I NEED HELP!!! You deposit $1,500 in an account earning 2.75% simple interest. How long will it take for the balance of the acco
Y_Kistochka [10]
12 years if interest is paid yearly
12 months if interest is paid monthly
Step-by-step explanation:
2.75% of $1500 is $41.25 interest per period
$1995-$1500 = $495 total interest
$495 ÷ $41.25 = 12 periods
Therefore it takes 12 interest periods to reach $1995, so the answer is 12 months or 12 years depending on how often interest is paid.
5 0
3 years ago
Which is bigger: 5/8 or 4/9
Zina [86]

Answer:

5/8

Step-by-step explanation:

5/8=0.625

4/9= 0.44

4 0
3 years ago
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