A security alarm requires a four-digit code. The code can use the digits 0–9 and the digits cannot be repeated. Which expression can be used to determine the probability of the alarm code beginning with a number greater than 7? StartFraction (2 P 1) (9 P 3) Over 10 P 4 EndFraction StartFraction (2 C 1) (9 C 3) Over 10 C 4 EndFraction StartFraction (10 P 1) (9 P 3) Over 10 P 4 EndFraction StartFraction (10 C 1) (9 C 3) Over 10 C 4 EndFraction

Select all the correct statements. the amount in dollars an electrician charges in terms of the number of hours worked is represented by the function y = 22x + 42. from the function, identify all the phrases that hold true for the situation. the electrician charges an initial fee of $22 the y-variable represents the number of hours the electrician charges an initial fee of $42 the electrician charges $22 for every hour worked the x-variable represents the electricians charges in dollars the electrician charges $42 for every hour worked

What is negative 3/9 times negative 2/8 ?

If mary had 320 toy cars and she gave her friend 50 cars and then she gave her brother 72 more cars how much toy cars would mary have left ● explain with proper details