Aschool has 320 girls and 250 boys the probability that a girl is left hand is 0.2 the probability that a boy is left handed is 0.1 estimated number of left-handed students in school

There are 89 left handed students in school.

Step-by-step explanation:

Since we have given that

Total number of girls = 320

Total number of boys = 250

Probability that a girl is left hand = 0.2

Probability that a boy is left handed = 0.1

We need to find the number of left handed students in school.

Similarly,

Hence, there are 25+64=89 left handed students in school.

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x