- Una Fabrica de ladrillos tiene en su bode- ga almacenadas 7520 piezas. Si el martes
se vendieron 2623 ladrillos, į que porcentaje
quedó en existencia?​

$450 is the answer.

step-by-step explanation:

30% of 450 = 135

450-135=315

the discriminant is 64 + 4*1*12 = 112

this is prime.

step-by-step explanation:

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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b. 153 students do not participate in sports and seventy-five 12th graders were surveyed