Answer: Paula starts with 301.5 yarns.
Step-by-step explanation:
Equation of a line passing through two points (a,b) and (c,d) is given by:-
Given: x= number of square inches knitted on the scarf
y= number of yarns remaining on the ball of yarn
The equation of a line passing through (15, 300.2) and (26, 177.88):
To find initial point, put x=0
Hence, Paula starts with 301.5 yarns.
She's 230 feet from the shore and she starts swimming towards shore at 2ft/s and covers 20 ft then Maxx starts out at 5ft/s at this point 10 seconds will have elapsed ( remember to add this on).They have now to cover 210 ft between them so the ratio will be5:2 making 210 divide by 7 = 30secs. So max will cover 150 ft and belle will cover 60 ft. So in summation for Belle to cover 60ft it would take her 30 secs plus the first 10 secs total 40 secs
Answer:
Step-by-step explanation:
Easiest way would be to substitute points into the given equations and plot your answers.
E.g. if you substitute points into your first equation you get:
If x = 0, y = -4(0) +2 = 2
If x = 1, y = -4(1) +2 = -2
If x = -1, y = -4(-1) +2 = 6
Etc.
Second equation:
If x = 0, y= -(0) -1 = -1
If x = 1, y = -1 -1 = -2
If x = -1, y = -(-1) -1 = 0
Pretty much just plug in values for x into the equations to find y.
Once you have your points, draw a line :)
Where the two lines intercept would be the solution.
It would take you 15 minutes
Can you take the quantity [ x + y ] and square it ?
Can you take the quantity [ x + 2y ] and square it ?
Then you should have no trouble with the square of (.9x + .8y) .
The square of any binomial (expression with 2 terms) is
(square of the first term)
+ (square of the second term)
+ 2 times (product of the terms) .
