Answer:
(2x + 4) ( x +1 ) are factors .
Step-by-step explanation:
Given : 2x² + 9x + 4.
To find : Factor.
Solution : We have given that 2x² + 9x + 4.
On factoring 2x² + 8x + 1x + 4.
Taking common 2x from first two terms and 1 from last two terms .
2x ( x +4 ) +1 (x +4 ).
On grouping
(2x + 4) ( x +1 ).
Therefore , (2x + 4) ( x +1 ) are factors .
Answer:
y + 20 > -30
Step-by-step explanation:
the solution set of y + 20 > -30 is
y> -50
-25 is greater than -50.
See in the explanation
<h2>Explanation:</h2>
<h3>1. Are exponential function one to one. How can you tell?</h3>
- A function is one-to-one if each value of corresponds to exactly one value of .
To demonstrate this, we take the Horizontal Line Test that states:
<em>A function has an inverse function if and only if there is no any horizontal line that intersects the graph of at more than one point.</em>
As you can see in the first figure, the horizontal line (the green one) intersects the graph of the exponential function (the red one) in just one point. If you take every horizontal line with any real number, you will find that every line intersects the exponential function in just one point. Therefore, this function is one-to-one
<h3>2. What does this tell you about their inverses?</h3>
Another important thing is that:
- A function has an inverse function if and only if is one-to-one.
As we have demonstrated that exponential functions are one-to-one by Horizontal Line Test, then we conclude exponential functions have inverse functions. The domain of the inverse function is the range of the original one and the range of the inverse function is the domain of the original one. The inverse of is whose graph is the second figure below.
<h2>Learn more:
</h2>
How to find the inverse of a function? brainly.com/question/9980183
#LearnWithBrainly
Answer: Total weight will be 7.055 ounces.
Step-by-step explanation:
Since we have given that
Ideal weight of a nickel = 0.176 ounce
Number of nickels in a roll = 40
Total weight becomes
Error that was allowed in total weight = 0.015 ounce
So, Total weight will be
Hence, Total weight will be 7.055 ounces.