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Sati [7]
3 years ago
9

The formula s = sqrt 30fd relates the speed S in miles per hour a car was traveling to the length d in feet that the car skidded

when brakes were applied. The variable f is the coefficient of friction, which varies depending on the road surface and the condition of the tires. Which set of numbers contains the value of S for f = 0.5 and d = 63?
* sqrt = Square Root

Select one:

a.
whole numbers

b.
irrational numbers

c.
integers

d.
rational numbers
Mathematics
1 answer:
pishuonlain [190]3 years ago
3 0

Answer:

b.

Step-by-step explanation:

30×0.5×63 = 945

this is not a square number. therefore, the sqrt(945) is a number of infinite digit positions after the decimal point without repeating pattern.

so, it is a prime example of an irrational number.

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Write an equation that represents a vertical translation 7 units down of the graph of g(x)=|x|.
Sergio039 [100]

Answer: Ix+10I

Step-by-step explanation: To shift the graph 10 units to the left, we replace x with x+10. What's really going on is that the xy axis shifts 10 units to the right (because x is now x+10; eg, x = 2 ---> x+10 = 2+10 = 12) so it appears that the graph is moving to the left. The general rule is h(x) = g(x+10).

So,

g(x) = |x|

g(x+10) = |x+10| ... every x has been replaced with x+10

h(x) = g(x+10)

h(x) = |x+10|

We can use a graphing tool like GeoGebra to visually confirm we have the right answer (see attached). Note how a point like (0,0) on the green graph moves to (-10,0) on the red graph.

7 0
3 years ago
One hour after yolanda started walking from x to y, a distance of 45 miles, bob started walking along the same road from y to x.
Rufina [12.5K]
<span>Answer: When bob starts walking The distance between them is 45-3 = 42 miles If they meet at time t then Yolanda would have walked X/3 minutes and Bob would have walked (42-X)/4 mins X/3 = (42-X)/4 so X = 18 Bob would have walked 42-18 = 24 miles.</span>
3 0
3 years ago
Use the Law of Cosines to find the missing angle. In triangle FGH, HF = 16 ft, FG = 23 ft, and m∠F = 52°. Find the measure of f.
ivolga24 [154]
F = 18 ft.

The law of cosines states 
c² = a² + b² - 2ab cos C

Using our information, we have 
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c² = 785 - 736cos 52
c² = 331.8732

Taking the square root of both sides, we have
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5 0
3 years ago
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zimovet [89]

Answer:

k = 4

Step-by-step explanation:

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64 = 4 × 4 × 4

\sqrt[3]{64}

= \sqrt[3]{4^{3} }

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6 0
3 years ago
Help solving for ask
frosja888 [35]
I did the math and what i got was x=116
4 0
3 years ago
Read 2 more answers
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