Question

David made an error when determining the product of (–2.5)(–8.3). Step 1: (–2.5)(–8.3) = (–8.3)(–2.5) Step 2: = (–8.3)(–2) + (–8.3)(–0.5) Step 3: = (–16.6) + (–4.15) Step 4: = –20.75 In which step did David make his first error?

Answer 1

Given : David made an error when determining the product  (–2.5)(–8.3).

Step 1: (–2.5)(–8.3) = (–8.3)(–2.5)

Step 2: = (–8.3)(–2) + (–8.3)(–0.5)

Step 3: = (–16.6) + (–4.15)

Step 4: = –20.75

To Find :  In which step did David make his first error?

Solution

(-)(-) = +

(-)(+) = -

(+)(-) = -

(+)(+) = +

Step 1: (–2.5)(–8.3) = (–8.3)(–2.5)    , No Error  used commutative property

Step 2: = (–8.3)(–2) + (–8.3)(–0.5)     No Error   used distributive property  

Step 3: = (–16.6) + (–4.15)   ERROR   ( as (-)(-) = +  but he used -  )

Step 4: = –20.75            

David made his first error in STEP 3

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Task 1

brainly.in/question/13463012

Answer 2

Answer:

step 3

Step-by-step explanation:

because im like that