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lara31 [8.8K]
3 years ago
8

a red string of holiday lights blinks once every 3 seconds while a string of blue lgihts blink once every 4 seconds. how many ti

mes with both sets of lights blink at the same time in 1 minute
Mathematics
1 answer:
gavmur [86]3 years ago
6 0
The highest common factor of 4 and 3 is 12
one minute has 60 secs
thus it will blink 60/12=5 times
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Michael drove from home to work at an average speed of 45 mph. His return trip home took 45 minutes longer because he could only
Xelga [282]

The distance from his home to his work place is 118.125 miles

<h3>How to find the distance from his home to his work place?</h3>

He drove from home to work at an average speed of 45 mph. Therefore,

speed = 45 mph

let

time = x

speed = distance / time

distance = 45x

His return trip home took 45 minutes longer because he could only drive at 35 mph. Therefore,

45 minutes = 0.75 hours

distance = 35(x + 0.75)

distance = 35x + 26.25

Therefore,

45x = 35x + 26.25

45x - 35x = 26.25

10x = 26.25

x = 26.25 / 10

x = 2.625

Therefore,

distance = 45(2.625) = 118.125 miles

learn more on distance here: brainly.com/question/21329221

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3 0
2 years ago
Find the area of a semi circle with a diameter of 28cm
Alexandra [31]

since it has a diameter of 28, then its radius must be half that or 14.

\textit{area of a circle}\\\\ A=\pi r^2~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ r=14 \end{cases}\implies A=\pi (14)^2\implies A=196\pi ~\hfill \stackrel{\stackrel{semi-circle}{half~that}}{98\pi }

8 0
2 years ago
An airplane flies at a rate of 356 km/h. The plane travels a total distance of 1424 km. (Use Distance = Rate * Time for your equ
aleksley [76]
1424=356t
1424/356=t
4 hours=time
6 0
3 years ago
Determine the value of x?​
olga2289 [7]

Answer:

x=38 degrees

Step-by-step explanation:

supplemental angle to 114 degrees is 66 degrees

180=x+2x+66

3x=114

x=38 degrees

7 0
2 years ago
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What is the following product? Assume y &gt;/= 0
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\sqrt{y^3} * \sqrt{y^3}= \sqrt{y^3*y^3}= \sqrt{y^6}=y^{ \frac{6}{2} } =y^3
7 0
3 years ago
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