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laila [671]
4 years ago
10

Solve the equation 2x^{2}+9x-1=x to the nearest 10th

Mathematics
1 answer:
Scilla [17]4 years ago
4 0

Answer:

2x2+9x−1=x

Step 1: Subtract x from both sides.

2x2+9x−1−x=x−x

2x2+8x−1=0

Step 2: Use quadratic formula with a=2, b=8, c=-1.

x=

−b±√b2−4ac

2a

x=

−(8)±√(8)2−4(2)(−1)

2(2)

x=

−8±√72

4

x=−2+

3

2

√2 or x=−2+

−3

2

√2

Step-by-step explanation:

This is what I got but I'm not 100% positive. I checked it on a calculator and it seemed to check out.

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Answer:

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5 0
3 years ago
Translate the description as an algebraic expression:
charle [14.2K]

Answer:

13/20p

Step-by-step explanation:

Here, we want to write an expression from the given statement

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5 0
3 years ago
Pls only put the right answer
Makovka662 [10]

Answer:

100°

Step-by-step explanation:

No explanation, by  your request.

3 0
3 years ago
What number is needed to finish the pattern 66 73 13 21 52 _ 10 20
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4 0
4 years ago
Read 2 more answers
Solve and graph the inequality 6 + 3n ≤40
Kazeer [188]
6+3n≤40
Use inverse operations i.e.
4x+2<10
    -2    -2
4x<8
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7 0
3 years ago
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