3 years ago

Can someone help me with this problem? I dont really understand it.

Mathematics

1 answer:

Allushta [10]3 years ago

4 0

OH I KNOW I KNOW TEACHER. its its wait im in middle school what the heck am i doing in here.

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A man sells a sofa for rs 3210 making a profit of 7% what would have been his profit percent if he had sold it for rs 3360?

Digiron [165]

Let x be the original cost for the sofa.
X x (1 + 0.07) =3210
X = 3000
Now we know the cost for the sofa.
Let p be the profit percent.
3000 x (1 + p) = 3360
P = 0.12
So the percentage profit is 12%

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3 years ago

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Answer:

Step-by-step explanation:

$y=2x^2+3x+5\\$

Using the quadratic formula:

$\frac{-3+-\sqrt{9-4(2)(5)}}{2(2)} = \frac{-3+-\sqrt{-31}}{4}$

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3 years ago

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Alex73 [517]

Hello!

You can expand the 4

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Hope this helps!

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2 years ago

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lisov135 [29]

Answer:

(y - 7)

Step-by-step explanation:

"7 less than y" means just that.... that you have 7 fewer units then the value of y.

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2 years ago

The value of y when x=5

Molodets [167]

D. 35 is the answer. Since we know that 14=2k based on the knowledge given in the first part of the equation, we can solve for K. We learn that K=7. Then, we can substitute K into the second equation: y=(7)(5) which is 35.

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