(a)A tram moved downward 45 meters in 5 seconds at a constant rate. What was the change in the tram's elevation each second? (b)In a lab, a substance was heated by 4°C each hour for 40 hours. What was the total change in temperature?

57 732

step-by-step explanation:

i dont really.know

center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.

answer: 8

step-by-step explanation: if you add the possibilities 5 different flavor and 3 different sizes 5+3=8