Aschool knows that 38% of its incoming students own a smart phone and a tablet.what

No. of students own a smart phone=B= 84%
No.of students own a tablet=A
No. of students own a smart phone and tablet= A∩B =38%

We use the conditional probability to do this problem;
                           Pr(A|B)=Pr(A∩B)/Pr(B)
                                       =0.38/0.84
                                       =0.45
                                       =45%(no. of students own a smartphone also own a tablet)

The value of square root of 75 is 8.65.

Step-by-step explanation:

Since we have given that

a) Explain why her reasoning is incorrect.

Her reasoning is incorrect.

As we can write it as :

(b) Estimate the square root of 75 to the nearest thousandths without using your calculator. Show

As we know that

So, the square root of 75 would be :

Hence, the value of square root of 75 is 8.65.