3x - 5 = 7
3 x 4 = 12
12 - 5 = 7
So x is 4
Answer:

0 is real number, rational number, integers, whole numbers,
Answer:
<h2>0 </h2>
Step-by-step explanation:

Complete Question
The complete question is shown on the first uploaded image
Answer:
The value is 
Step-by-step explanation:
From the question we are told to obtain the area to the of the z-score 1.39 and to the left of the z-score 1.53, this is mathematically represented as

From the z table on the question the area under the normal curve to the left corresponding to 1.53 and 1.39 is

and

So

=> 
Answer: 5a+ 13
Step-by-step explanation: