Please answer 20 points tamara rewrote the expression 0.2(4+1.4y - 2.1). her steps are shown.
step 1: 0.2 (4+1.4y-2.1)
step 2: 4.2 + 1.6y - 1.9
step 3: 4.2 - 1.9 + 1.6y
step 4: 2.3 + 1.6y.
which statement identifies and explains the first mistake tamara made?

step-by-step explanation:

step-by-step explanation:

f(x)=2x^2 -1 

translation is a function transformation that transform the function in a way of translating. by translating the function its graph is moved  up an down. moving the function f(x) 2 units to the left will be the new function g(x) with the equation: g(x)=f(x+2)=2(x+2)^2 -1

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.