Answer:
(y - 7)
Step-by-step explanation:
"7 less than y" means just that.... that you have 7 fewer units then the value of y.
Step-by-step explanation:
( secA + 1)( sec A - 1)
Using the expansion
( a + b)( a - b) = a² - b²
Expand the expression
We have
sec²A + secA - secA - 1
That's
sec² A - 1
From trigonometric identities
<h3>sec²A - 1 = tan ²A</h3>
So we have the final answer as
<h3>tan²A</h3>
As proven
Hope this helps you
Answer:
x = 9. Based on the given conditions, formulate: x = 1 + 8 Cal...
Step-by-step explanation:
Let x be the value of the third term.
Since it's a geometric sequence, then:
Third term/Second term = Fourth term/Third term
x/20 = 11.25/x
Cross multiplication:
x^2 = 225
x = 15
So since the ratio is constant, then it is
x/20 = 15/20 = 3/4
So the common ratio is 3/4 or 0.75.
Answer:
Step-by-step explanation:
1. You have the following number given in the problem above:
235,452
2. As you can see, it is smaller than a number with seven digits as 1,000,000.
3. You can rewrite 1,000,000 as an integer power of 10, which must have the following form:
Where 
is the exponent that indicates the number of times that 10 is multiplied by itself.
4. Therefore, you have:
