This in standard form is -28x + 10.
Step-by-step explanation:
There are 10 + 20 = 30 total students in the class.
Total marks for the class = 60 * 30 = 1800.
Total marks for the girls = 54 * 20 = 1080.
=> Total marks for the boys = 1800 - 1080 = 720.
Mean mark for the boys = 720 / 10 = 72.
6-4[x-1-(y+3)]+5y
6-4(x+1-y-3)+5y
6-4x-4+4y+12+5y
6-4+12-4x+4y+5y
14-4x+9y
10*2/5= 20/5 = 4 = 4.0 where 4 is the unit.(whole number)
Answer:
Principal (p) = $775
Rate of interest (r) = 4.24% = 0.0424
No of years/time (t) = 4 years
Simple interest = ptr
= 775 × 4 × 0.0424
= 131.44 dollars
Hence simple interest after 4 years is $131.44
Amount = simple interest + principal
= 775 + 131.44
= 906.44 dollars
Hence amount after 4 years is $906.44
RESULT
906.44 dollars
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