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

there are no figures how am i supposed to answer this question

step-by-step explanation:

step-by-step explanation:

we are given

since, we have to isolate x on anyone side

so, we can move all x terms on one side

subtract both sides by 2x

add both sides by 9

divide both sides by 4

we get