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Arada [10]
3 years ago
9

Which of the following are solutions to the quadratic equation? Check all that

Mathematics
1 answer:
Firlakuza [10]3 years ago
6 0

Answer:

\boxed{\sf \ \ \ x=-9 \ \ or \ \ x=2 \ \ \ }

Step-by-step explanation:

hello,

2x^2+7x-14=x^2+4\\ 2x^2+7x-14-x^2-4=0\\ x^2+7x-18=0\\x^2-2x+9x-18=0\\ x(x-2)+9(x-2)=0\\ (x+9)(x-2)=0\\ x+9 = 0 \  \text{or} \ x-2=0\\ x = -9 \  \text{or} \ x=2

hope this helps

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Please help me I’m stuck.
Svetlanka [38]

Answer:

Step-by-step explanation:

We will use the general area formula for finding the area of triangle when you are given information for SAS, which we have been.

A=\frac{1}{2}absinC , where a and b are the given side lengths and C is the included angle. You can ONLY use this when you have the info for SAS in a triangle. For us,

a = 17, b = 15 and C = 35 degrees.  Filling in:

A=\frac{1}{2}(17)(15)sin35

Do that on your calculator in degree mode and you'll find the area to be

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6 0
3 years ago
Math- Look at the picture below i will mark you as brainliest if you answer correctly.
densk [106]

Answer:

A

Step-by-step explanation:

Substitue 15 into the x value and complete the equation.

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4 0
2 years ago
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PLZ HELP ME <br> I appreciate any help, especially if you can show me how you got the answer
Arte-miy333 [17]

Answer:

C

Step-by-step explanation:

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3 years ago
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Levart [38]
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3 years ago
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Arthur purchased a 2010 model sedan for $20,000. The dealership offered
JulsSmile [24]

Answer: the answer is $ 17,349.21 APEX

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