Question

Please check my answers

Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth. 2a^2-46a+252=0

9, 14 - my answer
–9, –14
–18, 28
18, 28
2) The table shows the estimated number of deer living in a forest over a five-year period. Are the data best represented by a linear, exponential, or quadratic model? Write an equation to model the data.
Year Estimated Population
0 91
1 70
2 54
3 42
4 32

Answer 1

yup its true 9 and 14

Answer 2

A) exponential; y = 91*0.77^x - my answer
B) linear; y = 0.77x+91
C) quadratic; y = 91x^2+0.77
D) quadratic; y = 0.77x^2+91

Answer 3

Use any method to solve the equation. If necessary, round to the nearest hundredth.
9x^2 = 17
3, –3 - my answer
0.73, –0.73
4.12, –4.12
1.37, –1.37

Answer 4

Find the number of real number solutions for the equation.
x^2+5x+7-=0
1
2
Can not be determined from the graph
0 - my answer

Graph the set of points. Which model is most appropriate for the set?
(–6, –1), (–3, 2), (–1, 4), (2, 7)

exponential
quadratic
linear - my answer

Answer 5

Solve the equation by completing the square. Round to the nearest hundredth if necessary.
x^2-4x=5

1.73, –1.73
5, –1 - my answer
11, –7
1, 3

Use any method to solve the equation. If necessary, round to the nearest hundredth.

0.85, –0.85 - my answer
2.83, –2.83
3.32, –3.32
1.17, –1.17

Answer 6

A) exponential; y = 91*0.77^x - my answer
B) linear; y = 0.77x+91
C) quadratic; y = 91x^2+0.77
D) quadratic; y = 0.77x^2+91
correct

Use any method to solve the equation. If necessary, round to the nearest hundredth.
9x^2 = 17
3, –3 - my answer
0.73, –0.73
4.12, –4.12
1.37, –1.37
i think it is the last one

Answer 7

x(1) = -5/2 -i((3)^1/2)/2 and x(2) = -5/2+i((3)^1/2)/2

Answer 8

@ this solution for x^2+4x+7 =o @proud_yemeniah_

Answer 9

is my answer wrong @dinamix

Answer 10

Can not be determined from the graph i think

Answer 11

okay thanks can u check on the questions I have left

Answer 12

@proud_yemeniah_ lniear is correct

Answer 13

can u help me with whats left @dinamix
Solve the equation by completing the square. Round to the nearest hundredth if necessary.
x^2-4x=5

1.73, –1.73
5, –1 - my answer
11, –7
1, 3

Use any method to solve the equation. If necessary, round to the nearest hundredth.
11x^2 = 8

0.85, –0.85 - my answer
2.83, –2.83
3.32, –3.32
1.17, –1.17

Answer 14

5,-1 is true

Answer 15

0.85;-0.85 is true u are really cool

Answer 16

Thank you both! @dinamix @ASAAD123