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2 years ago

I got this problem wrong and I have no idea how to solve it.Help please ☕

Mathematics

1 answer:

astra-53 [7]2 years ago

8 0

Answer:

Step-by-step explanation:

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Solve x2 + 14x + 17 = –96 for x

jarptica [38.1K]

For this case we have to:

Given the quadratic equation of the form:

$ax ^ 2 + bx + c = 0$

The roots are given by:

$x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2a}$

If we have: $x ^ 2 + 14x + 17 = -96$

We can rewrite it in the following way:

$x ^ 2 + 14x + 17 + 96 = 0\\x ^ 2 + 14x + 113 = 0$

Where:

$a = 1\\b = 14\\c = 113$

Where we have:

$x = \frac {-14 \pm \sqrt {(14) ^ 2-4 (1) (113)}} {2 (1)}$

$x = \frac {-14 \pm \sqrt {(196-452)}} {2}$

$x = \frac {-14 \pm \sqrt {-256}} {2}$

By definition: $\sqrt {-1} = i$

$x = \frac {-14 \pm \sqrt {256} i} {2}$

$x = \frac {-14 \pm16i} {2}$

$x = \frac {-14} {2} \pm \frac {16i} {2}$

$x = -7 \pm8i$

Thus, the roots are given by imaginary numbers:

$x_ {1} = - 7 + 8i\\x_ {2} = - 7-8i$

Answer:

$x_ {1} = - 7 + 8i\\x_ {2} = - 7-8i$

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3 years ago

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Grace and Jamal each bought notebooks for school. Grace bought 3 notebooks for $3.90 while Jamal bought 2 notebooks for $2.20. W

ludmilkaskok [199]

3.9/3=$1.30

2.2/2=$1.10

The unit prices are $1.30 and $1.10.
Hope this help!

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3 years ago

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If 1/2 = 32/d what is d first answer gets brainerlist

Scilla [17]

Answer:

D would be equal to 64

You just need to multiply 32 by 2

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3 years ago

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I need to find Y=Mx+b. I found M but i forgot how to find B. Help

Serggg [28]

B is just the y-intercept or where the line goes over the y axis so it would be 50

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3 years ago

Can someone quickly answer this please

AnnyKZ [126]

Answer:

Step-by-step explanation:

Hello !

(4,4*2,4) + (3,14 * 2,2² )/2 =

10,56 + 7,60 = 18,2 m²

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3 years ago

I got this problem wrong and I have no idea how to solve it.Help please ☕​

I got this problem wrong and I have no idea how to solve it.Help please ☕