Answer:
The correct answer is option C. y = 31x + 154.
Step-by-step explanation:
Since x represents the days and she learns 31 words per day you would need to multiply 31 and the number of days (x).
This would look like 31x.
We also know she already knew 154 from the beginning which means we just have to add 154.
This leaves us with the equation y=31x + 154.
Hope this helps!
First you gave to get the denominators all the same then you can answer the questions
1. x=4+y-2z (move all terms not containing x to the right side of the equation) ; y= -4x + x + 2z (isolate) ; z= 2 - x/2 + y/2 (isolate)
2. y= 1/4x + 17/2 (slope intercept form)
3. x= -32/5 + 3y/5 + 2z ; y=32/3+5x/3-10z/3 ; z= 16/5+x/2 - 3y/10 (isolate the variable by dividing each side by factors that don’t contain variable)
To turn a percent to a decimal divide the percent by 100.
60% = 60/100 = 0.6
It is a combination because the order in which the toppings are used does not change the result.
The formula of combination is C 17,3 = 17!/(3!14!) = 17x16x15/(3x2) = 17x8x5 = 680 different ways.
