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Fed [463]
3 years ago
8

During a concert the temperature should not rise above 40 degrees celsius.

Mathematics
1 answer:
gavmur [86]3 years ago
4 0
Converting Celsius to Fahrenheit is really multiplying c by 1.8 and then adding 32. so, 40•1.8= 72, 72+32= 104!!!!
but it's asking how many degrees in Celsius is it below 40°. using the given formula, C= 35
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Answer:

Test statistic (t) = 0.625

Step-by-step explanation:

<u><em>Step(i):-</em></u>

mean of the Population(μ) = 10.4 hours

Sample mean (x⁻) = 10.7 hours

Standard deviation of the sample( S)  = 1.44

The level of significance (α= 0.1

Sample size 'n' = 9

Degrees of freedom = n-1 = 9-1 =8

<u><em>Step(ii)</em></u>:-

Test statistic

                     t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }

                   t = \frac{10.7 -10.4}{\frac{1.44}{\sqrt{9} } }  =0.625

8 0
3 years ago
Find a polynomial f(x) of degree 3 with real coefficents and following zeros. -4,4i
ElenaW [278]

Answer:

f(x)=x^3 +4x^2 +16x +64

Step by step explanation:

\text{Given that,  two roots are}~ -4~ \text{and}~  4i.\\\\\text{Let,}\\\\~~~~~~~x = 4i\\\\\implies  x^2 = 16i^2~~~~~~~;[\text{Square on both sides}]\\\\\implies x^2 = -16~~~~~~~~;[i^2 = -1]\\\\\implies x^2 +16 = 0\\\\\text{So,}~ x^2 +16~ \text{ is a factor of the 3 degree polynomial}.\\ \\ \text{The polynomial is ,}\\\\ f(x) = (x+4)(x^2 +16)\\\\~~~~~~~=x^3 +16x +4x^2 +64\\\\~~~~~~~=x^3 +4x^2 +16x +64

7 0
2 years ago
If -3(2-x)=4-(3x+1) what is x ?
olga2289 [7]

Answer:

x=2

Step-by-step explanation:

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-6+3x=4-3x-1

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8 0
3 years ago
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VMariaS [17]
It's really easy just divide 800/50
the answer is 16 times 
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3 years ago
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Novay_Z [31]

Answer:

c) The car dealer's business is expanding rapidly.

Step-by-step explanation:

You can tell because they're selling more and more every month.

7 0
3 years ago
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