Identifying an Error
A student estimated the sum
7.95 + 8.11 + 78.5 +8.05 + 79.4 +0.815 as:
All the numbers begin with a 7 or 8, so use cluster
estimation
8-8-80-8-80-0.8 = 184.8
Explain why this reasoning is not accurate.

im pretty sure its

(8,15)

step-by-step explanation:

step-by-step explanation: given equation a = h(b 1+b 2)

also we are given values of a, h and b 1 as :

a = 16, h = 4, and b 1 = 3.

in order to solve it for b 2, we need to plug the given values of   a, h and b 1 .

therefore, plugging values of   a, h and b 1   in given equation, we get

16 = 4( 3 + b 2)

first dividing both sides by 4, we get

4 = 3 + b 2

subtracting 3 from both sides, we get

4 -3 = 3 -3 + b 2

1 = b 2.

c-   36

taxicab circle radius 9 has 4(9) = 36 points