Select all of the equations equivalent to 6x=42.

A x−7=0
B 4x2=14
C x−1=8
D 6x−1=23

x-7=0

Step-by-step explanation:

We have two different methods to solve this question and we will still arrive at the same answer

The first method is

6x=42

Let'sdivide both sides by 6

x=7

Substrate 7 from both sides

x-7=0

The second method is

6x=42

Substrate 42 from both sides

6x-42=0

Factorise

6(x-7)=0

6=0

X-7=0

Therefore the final answer is x-7=0

A)

Step-by-step explanation:

FIRST ANSWER CHOICE:

is equivalent to .

Mutiply both sides by 6:

SECOND ANSWER CHOICE:

The equation , there is no symbol to seperate and so I can guess it is mutiplication or . That is not the answer

THIRD ANSWER CHOICE:

The equation x - 1 = 8 cannot be the

x - 1 = 8

FOURTH ANSWER CHOICE:

The equation cannot be the

i believe it is 0.1m because the measurement of 30.4m limits how precise you can be

you can only be as precise as the least precise measurement

step-by-step explanation:

the triangles are similar. therefore the corresponding sides are in proportion:

              cross multiply

            divide both sides by 32