A factory makes car batteries. The probability that a battery is defective is a

If 400 batteries are tested, about how many are expected to be defective?

29

Step-by-step explanation:

Heer is the complete question:

A factory makes car batteries. The probability that a battery is defective is 1/14. If 400 batteries are tested, about how many are expected to be defective?

A) 14

B) 371

C) 29

D)35

Probability that a battery is defective = 1/14

Number of batteries tested= 400

Expected number of defective batteries= Probability that a battery is defective × Number of batteries tested

= 1/14 × 400

= 400/14

= 28.57

= 29 Approximately

arrange the equations with like terms in columns.

analyze the coefficients of x or y.

add the equations and solve for the remaining variable.

substitute the value into either equation and solve.

check the solution.

step-by-step explanation: