Answer:
5
Step-by-step explanation:
It's a right triangle so 7x + 11x = 90
Solve for x
7x + 11x = 90
18x = 90
x = 5
Answer:
9 degrees
Step-by-step explanation:
The temperatire was -3 and then rose by 12, -3 + 12 = 9
I'm not sure what the question means by "use S = n^2"...
At any rate, the given sum
1 + 3 + 5 + … + 301
is simply the sum of the first 151 odd positive integers, which we can write in the form 2<em>n</em> - 1 for <em>n</em> between 1 and 151. That is,
We can expand the sum as
Next, recalling that
it follows that
(Probably "S = n^2" means "sum of <em>n</em> odd integers = <em>n</em> ²")