Please someone help me.

Mathematics

1 answer:

V125BC [204]3 years ago

8 0

Answer: if you need alternate form its given bellow

Step-by-step explanation:

Have a nice day can you mark me as a brainlist plzz

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Hi I need help please I’ll give brainliesst to show ever helps and explains

saw5 [17]

Answer: 233.19

Step-by-step explanation:

equation to find volume: width x length x height

the left box:

(14-7) x 3.25 x 3.25= 73.9375 (round after adding)

the right box:

7 x 3.25 x 7= 159.25

73.9375 + 159.25= 233.1875

Round to nearest hundredth: 233.19

8 0

2 years ago

A paper hat is folded into the shape of a kite, as shown.

Sedbober [7]

Answer:

the answer is D. 22

3 0

3 years ago

Solve <img src="https://tex.z-dn.net/?f=-2x%5E2%20%2B3x%20-%209%20%3D%200" id="TexFormula1" title="-2x^2 +3x - 9 = 0" alt="-2x^2

MArishka [77]

Answer:

$x= \frac{3-3\sqrt{7}i }{4}$ and $x= \frac{3+3\sqrt{7}i }{4}$

Step-by-step explanation:

We have to solve the given equation - 2x² + 3x - 9 = 0

To solve the equation given above we have to factorize the left-hand side of the equation.

But it can not be factorized. So, use the Sridhar Achaya formula.

Therefore, $x= \frac{-3 + \sqrt{3^{2}-4 \times (-2) \times (-9) } }{2\times (-2)}$ and $x= \frac{-3 -\sqrt{3^{2}-4 \times (-2) \times (-9) } }{2\times (-2)}$

So, $x= \frac{3-3\sqrt{7}i }{4}$ and $x= \frac{3+3\sqrt{7}i }{4}$ {Where $i=\sqrt{-1}$ }

Therefore, the solutions are imaginary numbers. (Answer)

Note: The Sridhar Acharya Formula gives if ax² + bx + c = 0, then the roots of the equation are $x = \frac{-b + \sqrt{b^{2}-4ac } }{2a}$ and $x = \frac{-b - \sqrt{b^{2}-4ac } }{2a}$ .