Hey there! I'm happy to help!
We see that Steve runs 2.5 miles per day and Sam runs 6.5 miles per day. If you add these together, we see that they run 9 miles every day.
We now need to see how many of these 9 mile days fit into this 450 miles. Let's divide 450 by 9 and we will see how many days it will take for them to reach 450 miles combined.
450÷9=50
Therefore, it will take Steve and Sam 50 days to reach 450 miles combined!
Have a wonderful day! :D
There are 380 students at Rock-Ledge Middle School.
To figure it out, you have to start by figuring out the total amount of students in band. If 38 = 25% then 38 x 3 = 75% so 114 = 75%. That means there are 152 students in band. That means 40% of the students are in band. Because 20s are easier to work with, you can transfer the 40% to 20% which equals 76. If 76 = 20% then 76 x 4 = 100% so the total number of students is 380!
If you need more help, just comment what you don't get.
Answer: 54678 years
Step-by-step explanation:
This can be solved by the following equation:
(1)
Where:
is the quantity of atoms of carbon-14 left after time
is the initial quantity of atoms of C-14 in the mammal hide
is the rate constant for carbon-14 radioactive decay
is the time elapsed
On the other hand, has a relation with the half life of the C-14, which is :
(2)
Substituting (2) in (1):
(3)
Applying natural logarithm on both sides of the equation:
(4)
(5)
Isolating :
(6)
(7) This is the age of the mammal hide
Step-by-step explanation:
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Answer:
y = -1.5x
How to build equation?
Given points: (0, 0), (2, -3)
Find slope:
Then find equation: