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ElenaW [278]
3 years ago
8

How long will it take a passenger train traveling at 160 miles per hour to travel from Denver, Colorado to Lincoln, Nebraska? Th

e distance between the two cities is 488 miles
Mathematics
1 answer:
Vsevolod [243]3 years ago
4 0
Set up a proportion
\frac{160 mi}{1hr} =  \frac{488mi}{X hrs} 

So you multiply 488*1=488
Then 488/160=3.05 hours.

:)
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Can someone solve this
Gemiola [76]

Answer:

f(h(-1)) = -1

Step-by-step explanation:

f(x) = (x-4)/3

h(x) = 3x + 4

f(h(-1)) = ?

So first off we need to solve for h(-1):

h(x) = 3x + 4

h(-1) = 3(-1) + 4

h(-1) = 1

Next, we plug this value into the f(x) equation:

f(x) = (x-4)/3

f(1) = (1-4)/3

f(1) = -1

f(h(-1)) may look confusing but it is just f(x) with x being the resulting value for h(-1)

Thus we can say that f(h(-1)) is equal to -1

8 0
3 years ago
I need help please helppppppppppppppppppppppp
Marrrta [24]

Given:

A figure of a circle and two secants on the circle from the outside of the circle.

To find:

The measure of angle KLM.

Solution:

According to the intersecting secant theorem, if two secant of a circle intersect each other outside the circle, then the angle formed on the intersection is half of the difference between the intercepted arcs.

Using intersecting secant theorem, we get

\angle KLM=\dfrac{1}{2}(Arc(JON)-Arc(KM))

(3x-4)=\dfrac{1}{2}(271-(x+6))

(3x-4)=\dfrac{1}{2}(271-x-6)

Multiply both sides by 2.

6x-8=265-x

Isolate the variable x.

6x+x=265+8

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x=\dfrac{273}{7}

x=39

Now,

\angle KLM=(3x-4)^\circ

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5 0
3 years ago
Translate : 5 more than a number squared (variable expression)
ohaa [14]

Answer:

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2 years ago
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Snezhnost [94]

Answer:

Indicate whether classical, empirical, or subjective probability should be used to determine each of the following probabilities.

Step-by-step explanation:

a)  The probability that a certain model will win the beauty contest

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B - Classical  

b) "The probability that next card in the deck will be black" is an example of which type of probability?

 

B- Classical

c) "The probability that there will be at least 16 tropical storms this  summer" is an example of which type of probability?

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d)  "There is a 0.30 probability of randomly selecting a student who has a part- time job " is an example of which type of probability?

A- Subjective

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3 years ago
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