If 2x + 5 = 1 then x =

-2
-1.5
0
2
none of these

x=-2

Step-by-step explanation:

2x + 5 = 1

Subtract 5 from each side

2x + 5-5 = 1-5

2x = -4

Divide each side by 2

2x/2 = -4/2

x = -2

x=-2

Step-by-step explanation:

To solve the given equation, we need to isolate x.

2x+5=1

We can first subtract 4 from both sides.

2x=1-5

2x=-4

Divide both sides by 2.

x=-2

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

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