Ineed to find right angle triangle sides (a=? , b=? , c= cathetus-cathetus=1 (a-b=1) and perimeter is 12.

Sides of triangle = 3 , 4 and 5

Explanation:

We have a - b = 1 --------------Equation 1

Perimeter = 12

a + b + c = 12 --------------Equation 2

And we have by Pythagoras theorem, c² = a² +  b² --------------Equation 3

From equation 2 we have c = 12 -a -b, substituting in equation 3

    --------------Equation 4

From equation 1 we have a = 1+b, substituting in equation 4

b = 20 is not possible since perimeter is only 12.

So, b = 3

Substituting in  equation 1 and 2

   a - 3 = 1, a = 4

   3 + 4 + c = 12, c= 5

Sides of triangle = 3 , 4 and 5    

3.4 pizzas

step-by-step explanation:

given is a scatter plot showing number of pizzas sold during weeks for different issues of coupon

y represents number of pizzas sold and x number of coupons issued

y is marked verticaly and x horizontally

the trend line is given as

y =3.4x+43

this says that even when no coupon is issued pizzas sold will be 43

and rate of change of pizza sold for 1 unit of coupon = slope = 3.4

i.e. when x increases by 1 unit y increases by 3.4 units

hence for each additional coupon issued 3.4 pizzas more will be sold

step-by-step explanation:

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