the area of a rectangular field is x^2-x-72 m^2. The length of the field is x+8 cm. What is the width of the field meters.

Answers

Answer 1

Answer: Hello,

A(x)=x²-x-72 (m²)
L=(x+8) (cm)= (x+8)/100 (m)

We suppose here x≠-8
(in reality x²-x-72>0 ==>x<-8 or x>9
but x+8>0 ==> x>-8
then
only x>9 are solutions)

W=A(x)/ ((x+8)/100 )=100*(x²-x-72)/(x+8)= 100*(x-9)(x+8)/(x+8)=100*(x-9)

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Which property does the statement illustrate?Column A Column B
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Answers

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because problems with if, and, then are transitive
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Robert's father is 4 years older than 3 times Robert's age. His father is 40 years old. Write the equation used to determine Robert's age.

Answers

Robert is 12 years old. The equation 40 = 3R + 4 was used to determine Robert's age based on the given information about his father's age being 40 and the age relationship between them.

We can set up an equation to represent the given information. Let's denote Robert's age as "R" and his father's age as "F." According to the information provided, we have:

F = 3R + 4

Given that Robert's father is 40 years old (F = 40), we can substitute this value into the equation:

40 = 3R + 4

Now, solve for Robert's age (R):

3R = 40 - 4

3R = 36

R = 36 / 3

R = 12

Therefore, Robert is 12 years old. The equation 40 = 3R + 4 was used to determine Robert's age based on the given information about his father's age being 40 and the age relationship between them.

To know more about equation:

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Answer:

robert is 12 years old

Step-by-step explanation:

robert's age=x

40=3x+4

that's the equation

40=3x+4

=36=3x

x=12

Y=-x^2+20x-64 what is the axis of symmetry

Answers

Answer:

Step-by-step explanation:

Giselle graphs the function f(x) = x^2. Robin graphs the function g(x) = –x^2. How does Robin’s graph relate to Giselle’s?Robin’s graph is a reflection of Giselle’s graph over the x-axis.

Robin’s graph is a reflection of Giselle’s graph over the y-axis.

Robin’s graph is a translation of Giselle’s graph 1 unit down.

Robin’s graph is a translation of Giselle’s graph 1 unit left.

Answers

Robin's graph of the function $g(x)=-x^2=-f(x)$ is the reflection of Giselle’s graph over the x-axis.

You can think in two ways:

1. For the function y=f(x), the sign minus before f(x) change the positive values of y into negative values. For example, f(2)=4 and g(2)=-4. This means that graphs of f(x) and g(x) are symmetric across the x-axis.

2. You can simply construct the table of values

and plot both graphs on the coordinate plane. From this diagram it is seen that graphs are symmetric over x-axis and Robin’s graph is a reflection of Giselle’s graph over the x-axis.

I graphed the functions using 1,2,3 as the value of x.

My answer would be: Robin’s graph is a reflection of Giselle’s graph over the x-axis.

The diameter of the Starbucks venti(large) lid is 3.3 inches. The tall(small) gas a diameter of 2.6 inches. What is the difference in the circumference of the two cups?