735-418= 317
317+271= 588
He is now 588 feet under the water.
Answer:
The explicit rule for this situation is
![a_n = 2 + n](https://tex.z-dn.net/?f=a_n%20%3D%202%20%2B%20n)
In row 12 there will be 14 pins
Step-by-step explanation:
We have an initial amount of 3 pins in the first row. Let's call the number of pins in row n.
where n is an integer and
.
So
![a_1 = 3](https://tex.z-dn.net/?f=a_1%20%3D%203)
In row n + 1 there will always be a pin more than in the previous row n, then:
![a_2 = a_1 +1](https://tex.z-dn.net/?f=a_2%20%3D%20a_1%20%2B1)
Then:
![a_n = a_1 + (n-1)\\\\a_n = 3 + (n -1)\\\\a_n = 2 + n](https://tex.z-dn.net/?f=a_n%20%3D%20a_1%20%2B%20%28n-1%29%5C%5C%5C%5Ca_n%20%3D%203%20%2B%20%28n%20-1%29%5C%5C%5C%5Ca_n%20%3D%202%20%2B%20n)
<em>Finally in row 12 there will be:
</em>
![a_ {12} = 2 +12\\\\a_ {12} = 14\ pins](https://tex.z-dn.net/?f=a_%20%7B12%7D%20%3D%202%20%2B12%5C%5C%5C%5Ca_%20%7B12%7D%20%3D%2014%5C%20pins)
Answer:
70 ft
Step-by-step explanation:
You want the actual width of a gym that is represented as 7 inches on a drawing with a scale of 1 in : 10 ft.
<h3>Scale factor</h3>
Each inch represents 10 feet, so 7 inches will represent ...
7 × 10 ft = 70 ft
The gym is 70 ft wide.
__
<em>Additional comment</em>
You can also write and solve an equation that shows the measures are proportional:
actual width / drawing width = (10 ft) / (1 in) = (gym width) / (7 in)
Multiplying both sides of this proportion by 7 in, we have ...
gym width = (7 in) × (10 ft)/(1 in) = 7 × 10 ft = 70 ft
Imma take a guess maybe C