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3 years ago

In 1989 Dutch ice skater dries van wijhe skated 200km at an average speed of 35.27 km/h. How long was he skating?

Mathematics

1 answer:

Lelu [443]3 years ago

7 0

200/35.27=5.6022409 hours total
Hope this helps!

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A nike bag cost $122 if for the holiday it's marked down by 20%. What is the total cost after tax if the tax is 8%

Sindrei [870]

The answer would be 105.41
Explantaion: 122 • 0.2=24.4
122-24.4=97.6
97.6•0.08=7.808 which rounded to the nearest hundredths would be 7.81 then 97.6+7.81=105.41

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3 years ago

How do you write 100 s a fraction, mixed number, or whole number

disa [49]

In fraction 100/100
In mixed number 10 0/10
Simplest form = 100

I hop this helps! :)

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2 years ago

<img src="https://tex.z-dn.net/?f=f%28x%29%20%3D%20x%20%7B%7D%5E%7B2%7D%20%20%2B%2012x%20%2B%2036" id="TexFormula1" title="f(x)

Mars2501 [29]

Answer:

Step-by-step explanation:

We are given the function:

$\displaystyle f(x) = x^2 + 12x + 36$

And we want to determine the value of:

$\displaystyle f^{-1}(225)$

Let this value equal a. In other words:

$\displaystyle f^{-1}(225) = a$

Then by the definition of inverse functions:

$\displaystyle \text{If } f^{-1}(225) = a\text{, then } f(a) = 225$

Hence:

$\displaystyle f(a) =225 = (a)^2 + 12(a) + 36$

Solve for a:

$\displaystyle \begin{aligned} 225 &= a^2 + 12a + 36 \\ \\ a^2 + 12a -189 &= 0 \\ \\ (a + 21)(a-9) &= 0\end{aligned}$

By the Zero Product Property:

$\displaystyle a + 21 = 0 \text{ or } a - 9 = 0$

Hence:

$\displaystyle a = -21 \text{ or } a = 9$

Thus, f(9) = 225. Consequently, f⁻¹(225) = 9.

In conclusion, our answer is B.

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2 years ago

Jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj

skad [1K]

Answer:

Step-by-step explanation:

2+2=2 and then 1 come now you have 1 2 and 1 1

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2 years ago

Please help . I’ll mark you as brainliest if correct

Oxana [17]

Answer:

30m

Step-by-step explanation:

51-21=30 that is the length of the long piece

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2 years ago