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Gennadij [26K]
2 years ago
8

Solve for x in the equation 3 x squared minus 18 x + 5 = 47.

Mathematics
1 answer:
Lana71 [14]2 years ago
6 0

Answer:

first option

Step-by-step explanation:

3x² - 18x + 5 = 47 ( subtract 5 from both sides )

3x² - 18x = 42 ( divide through by 3 )

x² - 6x = 14

Using the method of completing the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(- 3)x + 9 = 14 + 9

(x - 3)² = 23 ( take square root of both sides )

x - 3 = ± \sqrt{23} ( add 3 to both sides )

x = 3 ± \sqrt{23}

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OlgaM077 [116]

minus 6 on both sides and then reduce down

8 0
3 years ago
PLEASE HELPPP!
Liono4ka [1.6K]

Answer:

Bottle B has a larger volume of lotion therefore the correct answer

Step-by-step explanation:

1×2×6=12/3=4 Bottle A

1.5×3×4=18/3=6 Bottle B

8 0
2 years ago
a portion of 7200 is invested at 5 1/2 percent interest, and the rest is invested at 5 percent interest. if the yearly income fr
lana [24]

Answer:

A 5.5% = 5400 B 5% = 1800

Step-by-step explanation:

A + B = 7200

A * 0.055 + B * 0.05 = $387

A = 7200 - B

(7200 - B)*0.055 + B*0.05 = 387

396 - 0.055B + 0.05B = 387

396 - 0.005B = 387

0.005B = 9

B = 1800

A = 7200 - B = 7200 - 1800

A = 5400

5 0
3 years ago
Please show me how you got the answer thanks in advance.
Arada [10]
Let b and p represent the distances traveled by baby and pickles, respectively.
.. b +p = 27
.. p = 5(3b -1)

Substituting, you have
.. b +5(3b -1) - 27
.. 16b -5 = 27
.. 16 b = 32
.. b = 2

The baby travel was 2 miles.
The pickles travel was 25 miles.
7 0
3 years ago
Sarah is shopping for groceries at the local supermarket. She paid for her groceries using a $100 bill recently issued by the US
Tatiana [17]
It is not digital because that would something like applepay. It is also nt representative, since that would be something like food stamps. Commodity money is also a bad answer, since it is goods. You answer would be fiat money, which is paper tender issued by the government. Hope this helps.
6 0
3 years ago
Read 2 more answers
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