Help me on this math problem please ​

3x−8y−7z+4

Step-by-step explanation:

20-9=8-7 is not the same to 20+(-9)+8+(-7)  bcs parenthesis means multiply.  If you multiply than you will have two different answers.

Step-by-step explanation:

answer:

1. 0.04

2. 0.15

step-by-step explanation:

i just finished that assignment for properties of probability distributions.

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)