Factor completely 7x^2+28x-35

7(x-1)(x+5)

Step-by-step explanation:

7x^2+28x-35= ( 28x=35x-7x)

7x^2-7x+35x-35=

7x(x - 1)+35(x - 1)=

(x - 1)(7x+35)=

(x - 1)(7x+7*5)=

(x - 1)7(x+5)=

7(x-1)(x+5)

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons

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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