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Scilla [17]
3 years ago
5

The Martins drove the 468 miles between Memphis, Tennessee and Cincinnati, Ohio in one day. If they left Memphis at 7 a.m. and a

rrived in Cincinnati at 4 p.m., what was the Martins’ average speed?
Mathematics
1 answer:
saveliy_v [14]3 years ago
4 0
52mph, depending what unit you need the answer in you may have to use conversions
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Find the inverse please and thank you
Amanda [17]

The inverse f^{-1}(x) is such that

f\left(f^{-1}(x)\right) = x

We have

f\left(f^{-1}(x)\right) = -9\sqrt{f^{-1}(x) - 8} + 5 = x

Solve for the inverse.

-9\sqrt{f^{-1}(x)-8} + 5 = x \\\\ -9\sqrt{f^{-1}(x)-8} = x-5 \\\\ \sqrt{f^{-1}(x)-8} = -\dfrac{x-5}9 \\\\ \left(\sqrt{f^{-1}(x)-8}\right)^2 = \left(-\dfrac{x-5}9\right)^2 \\\\ f^{-1}(x) - 8 = \dfrac{(x-5)^2}{81} \\\\ \boxed{f^{-1}(x) = 8 + \dfrac{(x-5)^2}{81}}

5 0
2 years ago
Tan145+tan85/1-tan145*tan85 as asingle funciton
Minchanka [31]

Answer:

Step-by-step explanation:

Tan 145 = - 0.7002

Tan 85 = 11.43

Tan 145 + tan 85 =  10.7298

1 - tan(145)* tan(85) = 9.003

(Tan(145) + Tan(85)) / (9.003)

= 10.73 / 9.003

= 1.1918

I misread the question. If you mean

(Tan145+tan85) /1-tan145*tan85   (brackets are really important here)

then the answer is

Tan(145 + 85)

= Tan(230)

= 1.1918

3 0
2 years ago
What is the simplified form of the expression (6^-4)^-9/6^6?​
aleksley [76]

Answer:

(\frac{1}{1296} )^{\frac{729}{64} }

Step-by-step explanation:

I am assuming this problem reads (6^{-4}) ^{-\frac{9}{6}^6 }

  • So let's start on the outside and work our way towards the middle
  • Starting with the (-\frac{9}{6} )^{6}, this can be simplified to \frac{729}{64}

Now we have (6^{-4})^\frac{729}{64}

  • Now simplifying what is inside the parenthesis we get \frac{1}{1296}
  • Combining what we have the simplified for of the problem becomes: (\frac{1}{1296} )^{\frac{729}{64} }
6 0
2 years ago
Read 2 more answers
Step-by-step explanation please<br> (Worth 3 marks)
atroni [7]

Answer:

62°

Step-by-step explanation:

180-118=62

62+62=124

180-124=56

118-56=62

5 0
3 years ago
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Find the t-value such that the area in the right tail is 0.2 with 5 degrees of freedom.
evablogger [386]

Answer:

0.920

Step-by-step explanation:

To calculate this, we proceed to the t-table

Using degree of freedom 5 and significance level of 0.2, the t-value is 0.920

3 0
3 years ago
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