Answer:
It C pls give brainlist
Step-by-step explanation:
First off we have x number of students in the robotics club, 12 more in the Science club, and 84 students in total. This means:
Robotics Club = x
Science Club = (x + 12)
Total = 84
Okay, so here's the equation:
x + (x + 12) = 84 ~ Add like terms.
2x + 12 = 84 ~ Subtract 12 by both sides.
2x = 72 ~ Divide both sides by 2.
x = 36 ~ Meaning that the Robotics Club has 36 members.
At this point you can do: 84 - 36 = 48 which gives you the number of members in the Science Club, though...:
36 + (36 + 12) = 84 ~ Add the two in the parenthesis to get your answer.
36 + 48 = 84 ~ 48 is the number of Students in the Science Club.
84 = 84
In conclusion: The Science Club has 48 students.
Hope that helps. ^ ^
{-Ghostgate-}
Answer: a = -5
Step-by-step explanation:
-3 (9a+2)=129
-27a -6 = 129
-27a = 129+6
-27a = 135
a = -135/27
Answer:
![s = 7t](https://tex.z-dn.net/?f=%20s%20%3D%207t%20)
Step-by-step explanation:
The table given shows that both variables are directly proportional to each other. That is, as s variable increases, y variable also increases.
Equation to represent this direct proportion would be:
,
where, k = constant of proportionality.
Let's find k from the table given.
Let's use any pair values of of s and t given in the table. Say, s = 21, t = 3
![s = kt](https://tex.z-dn.net/?f=%20s%20%3D%20kt%20)
![21 = k3](https://tex.z-dn.net/?f=%2021%20%3D%20k3%20)
Divide both sides by 3
![\frac{21}{3} = \frac{k3}{3}](https://tex.z-dn.net/?f=%20%5Cfrac%7B21%7D%7B3%7D%20%3D%20%5Cfrac%7Bk3%7D%7B3%7D%20)
![7 = k](https://tex.z-dn.net/?f=%207%20%3D%20k%20)
![k = 7](https://tex.z-dn.net/?f=%20k%20%3D%207%20)
Plug in k = 3 into
:
![s = 7t](https://tex.z-dn.net/?f=%20s%20%3D%207t%20)