Error Analysis A question on a test asks students to find the speed at which a car travels.
The graph shows a proportional relationship
between the distance traveled in miles and time
in hours. Anna incorrectly says that the speed of
1
the car is mile per hour. What is the speed of
57
the car? What error might Anna have made I
The speed of the car is
miles per hour.

answer

explanation

the area of a circle is calculated using the formula

or

we can use any of the above formulae to calculate the required. preferably, let us use the latter since the diameter is

we substitute the diameter into the formula to get:

this is the exact value for the area of the circle.

the correct answer is a

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb

15 batches are the most you can make

step-by-step explanation: