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ehidna [41]
2 years ago
12

Using quadratic formula to find the solution for y=3x^3+8x-1

Mathematics
1 answer:
andre [41]2 years ago
3 0
Y=-1

that’s the answer
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A company is developing a new high-performance wax for cross country ski racing. In order to justify the price marketing wants,
andrew11 [14]

Answer:

A)Yes they should market the wax, because it melts before 55 seconds

C) Null hypothesis: mean <55 vs. Alternative hypothesis :mean =55

D) the value is 51.33 seconds

Step-by-step explanation:

The selected samples for the champion are : 57.9, 62.9, 50.6, 50.5,48.2,47.2,50.2 and 43.1

The mean is ;

Sum =57.9 + 62.9 + 50.6 + 50.5+48.2+47.2+50.2+ 43.1 =410.6

Mean= 410.6/8 =51.33= mean

Assuming Significant =0.05 thus applying this level will give you 51.28-51.38

if specifically, the mean time to finish their standard test course should be less than 55 seconds for a former Olympic champion, then the null hypothesis is correct

Then;

Null hypothesis: mean <55

Alternative hypothesis :mean =55

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aleksandrvk [35]
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Alik [6]

Answer:

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3 0
3 years ago
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Type the integer that makes the following subtraction sentence true for Brainliest!!!
Lesechka [4]

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(2a-5)/6 = 5/12 what is the answer?
USPshnik [31]

Answer:

a = 15/4.

Step-by-step explanation:

(2a-5)/6 = 5/12

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3 years ago
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