Answer:
D
Step-by-step explanation:
Just plug in what x is in f(x) which is given f(7) into the equation.
f(x) = 2x - 5
f(7) = 2(7) - 5
f(7) = 14 - 5
f(7) = 9
hope this helps, God bless!
Answer:
25%
Step-by-step explanation:
The formula for finding change over time
P= N-O/O times 100
P= percent
N= new value (for this problem 40)
O= old value (for this problem 32)
100 to get the percentage
First, subtract 32 from 40 to get 8.
Then, divide 8 by 32 to get 0.25
Lastly multiply by 100 to get 25 which is your percentage of change
Answer:
x = y = (15/2)√2
Step-by-step explanation:
You can recognize this as an isosceles right triangle, so x=y. They Pythagorean theorem then tells you that ...
15² = x² + x²
225/2 = x²
√(225/2) = x = √(225·2/4) = (15/2)√2
The solution is x = y = (15/2)√2.
_____
<em>Comment on isosceles right triangles</em>
It is worth remembering that the ratio of sides of an isosceles right triangle is ... side : side : hypotenuse = 1 : 1 : √2.
Knowing this lets you write down the solution to this problem as ...
x = y = 15/√2
Of course, the denominator of this fraction can be rationalized by multiplying the fraction by (√2)/(√2) to get (15√2)/2 or (15/2)√2.
The correct option is Option 1
Hope this helps!
