The uppercase delta Δ means "change in" so for example: Δx = difference between two x values.
The lowercase delta which Brainly does not have, looks like a squiggly lowercase d. It generally means "very small change in".
He can because you can add it mentally. You can just have 23 in your head and count by adding 10 "4" times.
Hope this helped☺☺
Answer:
From the choices given, the most reasonable estimate is 25.
Step-by-step explanation:
5 sections on the spinner means there is a 1/5 chance of landing on any of the sections each spin.
This means landing on a section labeled 5 should happen 1/5(150) = 30 times. The closest option to this is 25.
Answer:
I think its B. ?????
Step-by-step explanation:
Answer:
![\displaystyle [-2, 7]](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5B-2%2C%207%5D)
Step-by-step explanation:
You want to eradicate one pair of variables so they are set to zero. It does not matter which pair is selected:

{½[4x + 2y = 6]
{−2x + 2y = 18
>> 
Plug this back into the system to get the x-value of 
I am joyous to assist you at any time.