It took 32 minutes for Ella to go to school on Friday.
Step-by-step explanation:
Time for first four days in minutes,
30,28,34,31
Let x be the time on Friday
Average = 31 min
As we know
![Average = \frac{Sum\ of\ term}{No.\ of\ terms}\\Average=\frac{30+28+34+31+x}{5}\\31=\frac{123+x}{5}](https://tex.z-dn.net/?f=Average%20%3D%20%5Cfrac%7BSum%5C%20of%5C%20term%7D%7BNo.%5C%20of%5C%20terms%7D%5C%5CAverage%3D%5Cfrac%7B30%2B28%2B34%2B31%2Bx%7D%7B5%7D%5C%5C31%3D%5Cfrac%7B123%2Bx%7D%7B5%7D)
Multiplying both sides by 5;
![5*31=\frac{123+x}{5}*5\\155=123+x\\x+123=155\\x=155-123\\x=32](https://tex.z-dn.net/?f=5%2A31%3D%5Cfrac%7B123%2Bx%7D%7B5%7D%2A5%5C%5C155%3D123%2Bx%5C%5Cx%2B123%3D155%5C%5Cx%3D155-123%5C%5Cx%3D32)
It took 32 minutes for Ella to go to school on Friday.
Keywords: Average, Addition
Learn more about addition at:
#LearnwithBrainly
Answer: -4, -3, 0, 2
Step-by-step explanation:
Hi there! The answer is 54 mph.
To find our answer we must divide the total distance by the expected amount of time. Therefore, in this situation, we must divide 700 by 13. This gives us:
![\frac{700 \: miles}{13 \: hours} = 53.8 \: mph](https://tex.z-dn.net/?f=%20%5Cfrac%7B700%20%5C%3A%20miles%7D%7B13%20%5C%3A%20hours%7D%20%3D%2053.8%20%5C%3A%20mph)
Hence, the correct answer is: about 54 mph
Answer:
Change the angle measures to 90°
Step-by-step explanation:
A rhombus (which is what you have as you marked the edges congruent) has the diagonals perpendicular. Therefore, you need to change the angle measures to 90°