Suppose the tree diagram below represents all the students in a high school and that one of these students were chosen at random. If the student is
known to be a boy, what is the probability that the student is left-handed?
Left-
handed
50
Boys
200
150
Right-
handed
Left-
handed
50
Girls
300
250
Right-
handed

my answer is$ 12

step-by-step explanation:

because 15 -2=12

im pretty sure it would be 5 am, hope that , and give brainliest and guys if this is right then press the button and give 5 stars

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places

18.8cm hope i at all

step-by-step explanation: