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Nostrana [21]
1 year ago
12

Please answer !!!!!!!!!!!!

Mathematics
1 answer:
barxatty [35]1 year ago
8 0
2
1
3
That is your answers
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Part 1: What mistake did AJ make in the graph?
grigory [225]

Answer:

Part 1) AJ drawn the parabola opening upwards, instead of drawing it opening downwards

Part 2) see the explanation

Step-by-step explanation:

Part 1) What mistake did AJ make in the graph?

we have

f(x)=-(x+2)^2-1

This is the equation of a vertical parabola written in vertex form

The parabola open downward (because the leading coefficient is negative)

The vertex represent a maximum

The vertex is the point (-2,-1)

therefore

AJ drawn the parabola opening upwards, instead of drawing it opening downwards

Part 2) Evaluate any two x-values (between -5 and 5) into AJ's function. Show your work. How does your work prove that AJ made a mistake in the graph?

take the values x=-4 and x=4

For x=-4

substitute the value of x in the quadratic equation

f(x)=-(-4+2)^2-1\\f(x)=-5

For x=4

substitute the value of x in the quadratic equation

f(x)=-(4+2)^2-1\\f(x)=-37

According to AJ's graph for the value of x=-4 the function should be positive, however it is negative and for the value of x=4 the function should be positive and the function is negative

therefore

AJ made a mistake in the graph

8 0
2 years ago
If 3x+9=(10+x) then what does x equal?
neonofarm [45]
3x + 9 = 10 + x
2x +9 = 10
2x = 1
x = 1/2
3 0
2 years ago
Read 2 more answers
How do you solve 5x-2x+6x+40-9+1-x+3x-8+15+7
Aleonysh [2.5K]

5x-2x+6x+40-9+1-x+3x-8+15+7

First you would combine like terms:

5x - 2x + 6x - x + 3x = 11x and

40 - 9 + 1 - 8 + 15 + 7 = 46, so the simplified expression would be

11x + 46

3 0
2 years ago
A team surveys 1,000 fans to find out their preference for the team’s new uniform color. The bar graph here shows the results. W
melamori03 [73]
Since, we don't have the actual graph, I cannot give you a final answer. However, I can explain how to find the answer.

If you are looking for the color that the fans like the least, just pick the bar that is the smallest. This will be the correct answer.
4 0
3 years ago
A salesperson earns a flat monthly salary, plus a percentage of the items sold. Which of the following functions could model the
Sergeu [11.5K]
Option C. y = 0.06x + 1200

In that function 1200 represents the flat monthly salary, x is the value of the items sold and 0.06 means that teh percentage is 6%.
5 0
2 years ago
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