Answer: The answer is A and D
Step-by-step explanation: If you go through all the problems, just replace "b" with "(4)" into a calculator. For A and D, they both equaled 180.
2*5*3, you still get the same answer as (3*2)*5
Answer:
![m=80.840 kg](https://tex.z-dn.net/?f=m%3D80.840%20kg)
Step-by-step explanation:
Given Data,
Q=23000 J
c=4.184 J/g °c
Δt= 68 °c
m=?
By using this equation,
Q=mcΔt
![23000=m\times 4.184\times 68\\\\m=\frac{23000}{4.184\times68} \\\\\\m=80.840 kg](https://tex.z-dn.net/?f=23000%3Dm%5Ctimes%204.184%5Ctimes%2068%5C%5C%5C%5Cm%3D%5Cfrac%7B23000%7D%7B4.184%5Ctimes68%7D%20%5C%5C%5C%5C%5C%5Cm%3D80.840%20kg)
Answer:
$42.83
Step-by-step explanation:
1: Subtract the amount they have by the amount they need.
1328-43= $1,285.
2: Divide amount they need ($1,285) by the total staff members (30). Hence the equation is 1285 ÷ 30
3: Whatever answer you get from that equation is the answer
1285 ÷ 30 = $42.83
When you divide, you are setting the amount each staff member needs to donate by seeing how much money 30 people can give (equally) that adds up to 1285.
Hope this helps :)
-jp524