Answer:
r = - 2.5
![r=-2\frac{1}{2}](https://tex.z-dn.net/?f=r%3D-2%5Cfrac%7B1%7D%7B2%7D)
Step-by-step explanation:
21r - 7 - r + 5 = - 52
20r - 2 = - 52
20r - 2 + 2 = - 52 + 2
20r = - 50
20r ÷ 20 = - 50 ÷ 20
r = - 2.5
Answer:
The next step is to Divide 35 by 5 then solve for x
Step-by-step explanation:
Answer:
20.14
Step-by-step explanation:
21.15 - 5%(1.01) = 20.14
There is a 3% chance of each light bulb being defective, and we only want 5 of them to be defective. The chance is then:
![3\%^5*97\%^{25}](https://tex.z-dn.net/?f=3%5C%25%5E5%2A97%5C%25%5E%7B25%7D)
Or this really small number: 1.13474853e-8
Answer:
the first one
Step-by-step explanation:
The correct one is the one in the top left corner.
A great website to find out things like this is
https://www.mathpapa.com/algebra-calculator.html