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4 years ago

10

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

1 answer:

svetlana [45]4 years ago

4 0

Answer:

(4+√142)/(3) or x=(4-√142) /3

Step-by-step explanation:

(4+√142)/(3) or x=4-√142 /3

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Marta is buying a violin that costs $1,300. She makes a down payment of $500 and will pay the balance in 12 equal payments.

elixir [45]

Answer:

12 payemst of 66.66

Step-by-step explanation:

1300 - 500 = 800/ 12 = 66.66

7 0

3 years ago

Which step comes first? 12÷3•(15-6)+3

bagirrra123 [75]

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4 years ago

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Suppose y varies directly with x. Write a direct variation equation that relates x and y. Then find the value of y when x = 7.

Sonja [21]

For direct variation, y = kx
8 = -4k
k = 8/-4 = -2

Therefore, required equation is y = -2x

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4 0

3 years ago

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Can someone please simplify the complex fraction?

dmitriy555 [2]

$\bf \cfrac{\qquad \frac{x+3}{4x^2-16}\qquad }{\frac{2x^2+10x+12}{2x-4}}\implies \cfrac{\frac{x+3}{4(x^2-4)}}{\frac{\underline{2}(x^2+5x+6)}{\underline{2}(x-2)}}\implies \cfrac{\frac{x+3}{4(x^2-2^2)}}{\frac{x^2+5x+6}{x-2}}\implies \cfrac{\frac{x+3}{4(x-2)(x+2)}}{\frac{(x+3)(x+2)}{x-2}}$

$\bf \cfrac{\underline{x+3}}{4\underline{(x-2)}(x+2)}\cdot \cfrac{\underline{x-2}}{\underline{(x+3)}(x+2)}\implies \cfrac{1}{4(x+2)}\cdot \cfrac{1}{x+2}
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\cfrac{1}{4(x+2)(x+2)}\implies \cfrac{1}{4(x^2+4x+4)}\implies \cfrac{1}{4x^2+16x+16}$

8 0

3 years ago

What is -12=2+5v+2v

Xelga [282]

2+5y+2y=-12

2+7v=-12

2+7y-2=-12-2

7y=-14

7y/7=-14/7

y=-2

6 0

3 years ago

Read 2 more answers