Aman who can row in still water at 3 mph heads directly across a river flowing at 7 mph.

He drifts downstream at the river's speed, 7 mph. He has a 3 mph component across the river.  

His direction with respect to the heading angle (straight across) is  

tan^-1 7/3 = 66.8 degrees (towards downstream)

hope this helps :)

step-by-step explanation:

de-gf

hj=3x+20

ji=15x-64

x ≥ 18 is your answer

step-by-step explanation:

let "a number" = x

(2/3)x + 17 ≥ 29

isolate the variable (x). do the opposite of pemdas (parenthesis, exponent (& root), multiplication, division, addition, subtraction).

first, subtract 17 from both sides.

(2/3)x + 17 (-17) ≥ 29 (-17)

(2/3)x ≥ 29 - 17

(2/3)x ≥ 12

next, multiply 3/2 to both sides to isolate the x

(3/2)(2/3)x ≥ 12(3/2)

x ≥ 12(3/2)

simplify. multiply, then divide

x ≥ (12 * 3)/2

x ≥ (36)/2

x ≥ 18

x ≥ 18 is your answer

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