<span>f(x)=<span>x2</span>−1</span>That means to find the value of the function at any value of x, we square x and subtract 1. If <span>x=2a</span>, we square <span>2a</span> and subtract 1:<span>f(2a)=(2a<span>)2</span>−1=4<span>a2</span>−1</span>Now, we know that <span>f(2a)=35</span>so we can find the value of a:<span>f(2a)=(2a<span>)2</span>−1=4<span>a2</span>−1=35</span><span>4<span>a2</span>−1+1=35+1</span><span>4<span>a2</span>=36</span><span><span>a2</span>=9</span><span><span>a=±3</span></span>
Answer:2/5 = 40%
Step-by-step explanation:
Bethany already one green apple out, and we have 3 green apples and 2 red ones, so, if we want to know what is the probability that the second apple is red we will apply the follow formula: x/n, being X the favorable cases and n the total of cases, in this problem X is 2, because we want to now the RED apples, and N is the total of apples, being n = 2 red apples + 3 green apples = 5, the formula now looks like this: 2/5=? , we resolve it by doing the division and multiplying for 100, (2/5)100 =40 and now we add a % symbol, (2/5)100=40%, and that´s the answer!
For this case we have that by definition, the distance between two points is given by:
We have the following points:
Substituting we have:
Thus, the distance between the points is
Answer:
( x + 5 ) ( x - 7 )
( x ) ( x ) + ( x ) ( - 7 ) + ( 5 ) ( x ) + ( 5 ) ( - 7 )
x² - 7x + 5x - 35
= x² - 2x - 35.
Answer:
option 3
Step-by-step explanation:
