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anastassius [24]
3 years ago
6

PLEASE HELP PRE CALCLUS

Mathematics
1 answer:
sergeinik [125]3 years ago
8 0
Exact Form:

The answer is A!!!!

Just did this mathematically!! Hope this helped:)
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Ms. Diaz needs to purchase pencils for the
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the answer is b

Step-by-step explanation:

because it is the best deal

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3 years ago
The track team ran a mile and a quarter during their practice how many kilometers did her team runs?
nevsk [136]

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Step-by-step explanation:


4 0
3 years ago
∑<br> ∞<br> n<br> =<br> 1<br> −<br> 4<br> (<br> 1<br> 3<br> )<br> n<br> −<br> 1
Law Incorporation [45]

Answer:

6

Step-by-step explanation:

The correct notation is: Summation from n = 1 to infinity of the expression:

4(\frac{1}{3} )^{n-1}

If we expand this notation, we will find that the given summation represent the terms of a G.P and we have to find the sum of infinite terms of a G.P. By placing n=1,2,3,4,... we can find the first few terms as shown below:

4(\frac{1}{3} )^{1-1}=4\\\\ 4(\frac{1}{3} )^{2-1}=4(\frac{1}{3} ) \\\\ 4(\frac{1}{3} )^{3-1} =4(\frac{1}{3} )^{2}

Its obvious from the above result, that the given summation represent a G.P with first term equal to 4 and common ratio of 1/3. The formula of infinite G.P is:

S=\frac{a_{1} }{1-r}

Using the value of a1 = 4 and r = 1/3 we can calculate the given summation

S=\frac{4}{1-\frac{1}{3} }=6

Therefore, the given summation is equal to 6.

3 0
4 years ago
Ofelia is typing an essay on her computer. She typed 3/5 of a page in 1/5 hour. At this rate how long would it take her to type
sergejj [24]
C) might be the answer because I divided the fractions. 3/5 divided by 1/5 which equals to 3. 3/5 *1/5.then 3/5 * 5/1 because you have to flip the second fraction.which equals to 15/5. But that is an improper fraction.so you need to divide 15 divided by 5=3 hours
Hope this helps
8 0
3 years ago
Read 2 more answers
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