7 books
Because
30-2 is 28
28/4 is 7
With no left over money
What do you need help with?
I think the answer is 123
Answer:
F. A reflection over the x-axis and a horizontal stretch
Step-by-step explanation:
Using Desmos, a well-known graphing-calculator website, you can input the two equations. You can see that the h(x)= -(x/4)^2 equation does in-fact reflect over the x-axis and is wider than x^2, meaning that it has a horizontal stretch.
Answer:
A. -8 and 20
Step-by-step explanation:
I think your question is missed of key information, allow me to add in and hope it will fit the original one.
<em>Consider the graph of the quadratic function y = </em><em />
<em>What are the roots of the function?
</em>
<em>A. –8 and 20
</em>
<em>B. –40 and –8
</em>
<em>C. –8 and 8
</em>
<em>D. –40 and 20
</em>
My answer:
Given the function:
<em> y = </em><em />
<=> y = <em> </em>
Let convert to the factors form, the roots of the function must meet the following requirements:
- The two number that has the sum of 12 = -b
- The two number that has the product of -40 = c
In 4 possible answer, only <em>–8 and 20 is possible because: </em>
-8 + 20 = 12 = -b
-8*20 = -160 = c
So the factored form of the function is:
y = (x + 8)(x-20)
Hope it will find you well.