N + 4.5 = 8.2
n = 8.2 - 4.5
n = 3.7
Answer:
1110
Step-by-step explanation:
Michael is x. Michelle is y.
x+y=27
x-5=y
Substitute y
x+(x-5)= 27
2x-5=27
2x=32
x=16
Plug in x value
(16)+y=27
y=11
Final answer: Michael-16, Michelle-11
The student would have to score 100% on their next test to brung their average up to 90. Here is why;
90+84+86=260
(260+?)/4=90
(260+100)/4=90
360/4=90
This is done to get the mean (or average) of a group of numbers by adding all the numbers and dividing by the amount of numbers you added together. Here it is divided by 4 because of the three tests he has taken and the test he will take.
Answer:
42
Step-by-step explanation:
First condense all the numbers with exponents:
3² x 5³x 8 divided by 3 x 5³ x 8
27 x 125 x 8 divided by 3 x 27 x 8
Then multiply 27 , 125 ,and 8
27 x 125 x 8 =27000
Then multiply 3, 27 ,and 8
3 x 27 x 8 = 648
Then divide 27000 by 648
27000 / 648 = 41.6666666667
Which rounds to about: 42
