4 years ago

5y+ 2y -4 Help Pleaseee.

Mathematics

1 answer:

gregori [183]4 years ago

8 0

Answer:

4/7 or 0.5712

Step-by-step explanation:

5y+2y - 4

5y+2y = 4

7y=4

y=4/7 or 0.5712

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A store purchased a DVD for 12.00 and sold it to a costumer for 50 percent more than the purchase price. The costumer was charge

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Step-by-step explanation:

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3 years ago

Compute 3 + (1-2(3-5))

soldier1979 [14.2K]

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3 years ago

I really need help with this

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Answer:

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Step-by-step explanation:

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3 years ago

Solve 3x^2 + 6x+15=0

Elden [556K]

Answer:

The solution of given equation is ( - 1 + 2 i ) , ( - 1 - 2 i )

Step-by-step explanation:

Given equation as :

3 x² + 6 x +15 = 0

The value of x fro the quadratic equation a x² + b x + c = 0 is obtained as

x = $\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}$

So , from given eq , the value of x is now obtain as

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

Or, x = $\frac{-6\pm \sqrt{6^{2}-4\times 3\times 15}}{2\times 3}$

Or, x = $\frac{\sqrt{-144} }{6}$

∴ x = ( - 1 + 2 i ) , ( - 1 - 2 i )

Hence The solution of given equation is ( - 1 + 2 i ) , ( - 1 - 2 i ) Answer

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4 years ago

Find the percent of increase from 20 to 45.

Aloiza [94]

It is a 125% increase from 20 to 45

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3 years ago

Read 2 more answers