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3 years ago

A diesel train left the station and traveled

Mathematics

1 answer:

Vinil7 [7]3 years ago

8 0

I believe the trains speed average was about 34 km/h

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A polar vortex causes the temperature to decrease from 3 degrees Celsius at 3:00 P.M. to -2 degrees Celsius at 4:00 P.M. The tem

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3 years ago

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3 years ago

X divided by 7 - 5 = 2 x/7 - 5 = 2

Black_prince [1.1K]

Answer:

x=4

Step-by-step explanation:

Multiply by 2 from both sides of equation.

2x/7-5=2*2

Simplify, to find the answer.

2*2=4

x=4 is the correct answer.

I hope this helps you, and have a wonderful day!

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4 years ago

5 number summary? Please help this is confusing and please do step by step

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The min is the smallest number in the data set —2
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3 years ago

Which is the graph of f (x) = 4 (1/2) Superscript x?

miss Akunina [59]

Answer:

Option (2) is correct graph.

Step-by-step explanation:

Given:

The function to graph is given as:

$f(x)=4(\frac{1}{2})^x$

Now, the above function is an exponential function of the form $f(x)=ka^x$

Where, 'k' and 'a' are constants.

The range of an exponential function is always greater than 0.

The domain is all real numbers.

Now, for graphing it, we need to find some points on it and its end behaviour.

Now, for x = 0, the function value is given as:

$f(0)=4(\frac{1}{2})^0=4$

So, (0, 4) is a point on the graph.

Now, for x = 1, the function value is given as:

$f(1)=4(\frac{1}{2})^1=4\times\frac{1}{2}=2$

So, (1, 2) is another point on the graph.

Now, for x = 2, the function value is given as:

$f(2)=4(\frac{1}{2})^2=4\times\frac{1}{4}=1$

So, (2, 1) is another point on the graph.

Now, as 'x' tends to ∞, the function value tends to:

$f(x\to\infty)=4\cdot\frac{1}{2}^{\infty}=\frac{4}{\infty}=0$

So, as

$x\to\infty,f(x)\to0\\\\x\to-\infty,f(x)\to\infty$

Now, from among all the options, only option (2) fulfills all the conditions given above.

So, option (2) is correct graph.

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4 years ago