Yes because 84+45 is 129 and 3(28+15) is 129
Answer:
30
Step-by-step explanation:
I just did this at school lol
Answer:
x = 12
Step-by-step explanation:
5+x2 = 2x2+13
5+x2 = 4+13
5+x2÷2 = 17
5-5+x = 17-5
x = 12
Answer:
![a = 5](https://tex.z-dn.net/?f=a%20%3D%205)
Step-by-step explanation:
Solving
:
![h(-2) = 21 \\ a(-2)^2 +1 = 21 \\ a(4) +1 = 21 \\ 4a +1 = 21 \\ 4a +1 -1 = 21 -1 \\ 4a = 20 \\ \frac{4a}{4} = \frac{20}{4} \\ a = 5](https://tex.z-dn.net/?f=h%28-2%29%20%3D%2021%20%5C%5C%20a%28-2%29%5E2%20%2B1%20%3D%2021%20%5C%5C%20a%284%29%20%2B1%20%3D%2021%20%5C%5C%204a%20%2B1%20%3D%2021%20%5C%5C%204a%20%2B1%20-1%20%3D%2021%20-1%20%5C%5C%204a%20%3D%2020%20%5C%5C%20%5Cfrac%7B4a%7D%7B4%7D%20%3D%20%5Cfrac%7B20%7D%7B4%7D%20%5C%5C%20a%20%3D%205)
Answer: 32
Step-by-step explanation:
48 people at the liberty and there are 3 times the number of adults 48 divided by 3 would be 16 kids and 48 - 16 would be 32