2+2 + 4×6 - 7×6 +89 ×3 =

253

Step-by-step explanation:

2+2 = 4

4*6= 24

7*6= 42

89*3 =267

4+24-42+267=253

deserves brainliest

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.

a28=58

step-by-step explanation:

a1=a1+(n-1)d

a28= 4+ (28-1)2

a28=4+(27)(2)

a28=4+54

a28=58