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inna [77]
3 years ago
15

Need help with 1,4,7 please

Mathematics
1 answer:
Alex_Xolod [135]3 years ago
3 0
I dont understand the question that you are asking
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A circular running track is 1/4 mile long. Elena runs on this track completing each lap in 1/4 of an hour. What is Elena's runni
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She is going 1mph

Step-by-step explanation:

each lap is 1/4 of a mile and 1/4 of an hour so 4 laps = 1 mile and in 1 hour

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6 0
3 years ago
find the sum of a 9-term geometric sequence when the first term is 4 and the last term is 1,024 and select the correct answer be
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Hello,

u_{1} =4\\&#10; u_{2} =4*q\\&#10; u_{3} =4*q^2\\&#10;...\\&#10;&#10; u_{9} =4*q^8\\\\&#10;==\textgreater\ 4*q^8=1024\\&#10;==\textgreater\ q^8=256\\&#10;==\textgreater\ q=2\mbox{( and there is a problem in the question) } \ or \ q=-2\\&#10;if\ q=2 \ then\  \sum_{i=0}^{8}\ 4*(2)^i= 4*\dfrac{1-2^9}{1-2} =2044\\&#10;&#10;if \ q=-2 \ then\ \sum_{i=0}^{8}\ 4*(-2)^i= 4*\dfrac{1-(-2)^9}{1+2} =684\\&#10;&#10;&#10;&#10;

Answer B (but see the problem)
7 0
3 years ago
Read 2 more answers
A $275 coat is on sale at 15% off. Find the sale price, round to the nearest cent.
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the answer is $233.75

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fomenos
The first is not a polynomial as one term is dividing. 
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3 years ago
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