What is the value of x?

Mathematics

1 answer:

Pavlova-9 [17]3 years ago

5 0

Answer:

x = 8

Step-by-step explanation:

Add the four angles given to get 264°

Subtract 264° from the total measure of angles in the pentagram (360°) which gives you 96° for the missing angle measure. From there, it's just basic algebra.

x = 96 ÷ 12

x = 8

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Car is driving at 30 kilometers per hour. How far in meters does it travel in 3 seconds?

Alenkasestr [34]

Answer:

25 meters

Step-by-step explanation:

30 km/hr = (30 km/1 hr)*(1000 m/1 km)*(1 hr/60 min)*(1 min/60 sec)

30 km/hr = (30*1000*1*1)/(1*1*60*60) meters per second

30 km/hr = 8.3333333333 m/s (approximate)

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The speed or rate is r = 8.3333333333 meters per second approximately, and the time is t = 3 seconds, so,

distance = rate*time

d = r*t

d = 8.3333333333 * 3

d = 24.9999999999

Due to rounding error, the true answer should be d = 25. We can see this if we opted to use the fraction from of 8.3333... instead of the decimal representation which isn't a perfect exact measurement.

4 0

3 years ago

Could someone please help me out with this?

natka813 [3]

5•3=25 :) hope this helps!

7 0

3 years ago

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Which expression equals a number that is NOT a rational number?

rewona [7]