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My name is Ann [436]
3 years ago
11

6. Calculate the 90% confidence interval for the difference of the average number of fireflies caught in a 15-minute interval be

fore 9pm and the average number of fireflies caught in a 15-minutes interval after 9pm. Show your work!
Mathematics
1 answer:
Nataly_w [17]3 years ago
3 0

Answer:

-1.193 <  U_{d}  > 4.443

Step-by-step explanation:

1.625 -1.895 *4.206712/sqr 8

1.625 - \frac{1.895 * 4.206712}{\sqrt{8} }  < U_{d}  >  1.625 +  \frac{1.895 * 4.206712}{\sqrt{8} }  

-1.193 <  U{d}  > 4.443

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Really confused on this and need some help to figure this out (i'll give a brainliest to whoever will help)
inna [77]

Answer:

55

Step-by-step explanation:

The angles are complementary as they add up to make a right angle/ 90° as indicated by the small square. So let's make an equation and solve for x :

x-20 + x = 90

Add 20 to both sides :

x+x = 110

2x = 110

Divide both sides by 2 :

x = 55

Hope this helped and have a good day

4 0
2 years ago
5x-0.1=4x I need to know what X is not sure how to solve
masha68 [24]
<span>5x-0.1=4x
Subtract 5x from both sides so that the x variable is only on one side
-0.1=-x
Divide both sides by -1 to get rid of the negative on the side with the x variable
Final Answer: 0.1=x</span>
8 0
4 years ago
Read 2 more answers
How can you write a percent as an equivalent fraction?
erik [133]

Answer:

It should be A

Step-by-step explanation:

I hope this helps

5 0
3 years ago
PLEASE ANSWER ASAP THANK YOU!!!
ANEK [815]

Answer:

$10.42

Step-by-step explanation:

Compound interest formula: A=p(1+r/n)^nt

9=p, r=0.05, n=1, and t=3

A=9(1+0.05)^3

A=9(1.05)^3

Plug this into calculator and you get $10.42

7 0
3 years ago
Read 2 more answers
A 440.0-volt electric heater draws 10.0 amperes of current. according to Ohms law,what is the resistenace of the heater
Zanzabum

Answer:

The resistance of the heater is 44 ohms.

Step-by-step explanation:

Given that,

Voltage of electric heater, V = 440 volts

Current drawn by the heater, I = 10 A

We need to find the resistance of the heater. It is a case of Ohm's law. Its mathematical form is given by :

V=IR

R is resistance of the heater

R=\dfrac{V}{I}\\\\R=\dfrac{440\ V}{10\ A}\\\\R=44\ \Omega

So, the resistance of the heater is 44 ohms. Hence, this is the required solution.

4 0
3 years ago
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