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Ostrovityanka [42]
3 years ago
6

What are the solutions 2x^2 +7x=4

Mathematics
2 answers:
elena55 [62]3 years ago
8 0
So your equation is 2x^{2} +7x = 4. You need to simplify this answer.
So first off, do 2x times 2x.
2 x 2 = 4.
Your equation is now 4x + 7x = 4.
You're already off to a great start, so now let's add 4x + 7x. It is 11x.
Your equation is almost done! It's 11x = 4 right now.
Divide both sides by 11, and your answer is...
0.36363636 and so on, or you can round to the nearest hundreth, in which it will be

0.36.

I hope I helped!
Lera25 [3.4K]3 years ago
7 0
You need to do inverse operations. SADMEP. 

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Which number is a perfect cube? O25 O36 O125 O300<br><br><br> please
madam [21]

Answer:

125

Step-by-step explanation:

We're looking for a number that we can multiply three of the same number to get. For example, 25 is a perfect square, because 5*5 = 25.

You can test these all on your calculator, if you're allowed! Just take the third root of all of them, and if it's a whole number, you know you have a perfect cube.

The answer, though, is 125, because 5*5*5 = 125.

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3 years ago
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SVEN [57.7K]

Answer:

The slope of the perpendicular line is the negative reciprocal. This means you change the sign of the slope to its opposite: in this case to 3. Then find the reciprocal by switching the denominator and numerator to get 1/3; therefore the slope of the perpendicular line is 1/3.

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3 years ago
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Vika [28.1K]

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zhannawk [14.2K]

Answer:

a) 8²

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Step-by-step explanation:

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