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2 years ago

11

Algebra graphing question

1 answer:

lozanna [386]2 years ago

8 0

Answer:

Point (-2,1) Doesn't fall on the line.

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What are the possible values of x in 8x2 + 4x = -1?

Westkost [7]

Answer:

The possible values of x are:

x= $\frac{-1+\sqrt{3}}{4} \,\,or\,\, x= 0.18$

and

x= $\frac{-1-\sqrt{3}}{4} \,\, or \,\, x= -0.68$

Step-by-step explanation:

$8x^2+4x+1=0$

Using Quadratic formula to solve this equation:

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\a = 8 \,\, b = 4\,\, c = -1\\Putting \,\, values \,\, in \,\, the\,\, equation\\x= \frac{-4\pm\sqrt{(4)^2-4(8)(-1)}}{2(8)}\\x= \frac{-4\pm\sqrt{16+32}}{16}\\x= \frac{-4\pm\sqrt{48}}{16}\\x= \frac{-4+ \sqrt{48}}{16} \,\, and \,\, x= \frac{-4- \sqrt{48}}{16}\\x= \frac{-1+ \sqrt{3}}{4} \,\, and \,\, x= \frac{-1- \sqrt{3}}{4}$

The possible values of x are:

x= $\frac{-1+\sqrt{3}}{4} \,\,or\,\, x= 0.18$

and

x= $\frac{-1-\sqrt{3}}{4} \,\, or \,\, x= -0.68$

4 0

3 years ago

Can someone help me?

scoundrel [369]

Answer: its 180

Step-by-step explanation: length times width is the area. 15 times 12 is 180

5 0

2 years ago

Read 2 more answers

4 If y = 2x + 1, what is X=-3?<br>A 5<br>B - 7<br>C -5<br>D 6<br>

Hoochie [10]

Answer:

c

Step-by-step explanation:

y=2(-3)+1

y=-6+1

y=-5

USE SUBSTITUTION

5 0

3 years ago

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What is the value of the expression 6x - y when x = 3 and y = 1? (5 points)

Vladimir [108]

Answer:

the answer is 17

Step-by-step explanation:

6×3-1

= 17

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2 years ago

Doanh thu công ty ABC năm hiện tại 6.500 triệu USD, doanh lợi tiêu thụ (ROS) 8%. Dự kiến trích 8% lợi nhuận sau thuế chia cổ tức

Sveta_85 [38]

Answer:

ill answer if u can make it english

Step-by-step explanation:

6 0

2 years ago