The answer to this question would be 39..here is why:
First you multiply 23 x 3..because multiplication or division always comes before addition or subtraction.
Second, you get the product from 23 x 3 which is 69..and you subtract 30 from that.
Last, after you do that you get an over all answer of 39..
Hope this helps!!
1. A
2. C
3. C
4. A
I’m not so sure about number 4 tho!!
The Z-score is calculated by the formula below

Step 2: Substitute the given parameters in the formula

Hence, the z-score of a person who scored 145 on the exam is -0.5
Answer:
6
Step-by-step explanation:
The circumference of a circle is 
, so
. We can use this because the area of a circle is
. Thus,
.
What is the product? I cannot help you if I don't know the product..