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Evgesh-ka [11]
3 years ago
12

-2x2+x+8=0 use the quadratic formula to solve the equation

Mathematics
1 answer:
lisabon 2012 [21]3 years ago
5 0
X = -1 is the answer to -2x2+x+8=0
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Which expession is equivalent to negative 2 1/4 over nagative 2/3​
Kruka [31]

Answer:

Ahhhhhjhhhjhhhh

Step-by-step explanation:

How that helps ;)

4 0
3 years ago
You have a bag of 42 candies you want to give to your 6 friends. the company that makes the candies guarantees that exactly 6 of
emmasim [6.3K]
The possibility is 6 out of 42
3 0
3 years ago
Please help!!
jenyasd209 [6]

Answer:

x = - 3

y = - 2

Step-by-step explanation:

Start with the second equation. Switch

3y = 2x               Divide by 3

3y/3 = 2x/3

y = 2x/3

Now go to the first equation. Put the value for y in the first equation.

x - 3(2x/3) = 3      Cancel the 3s on the left.

x - 2x = 3              Combine

-x = 3                    Multiply by -1

-1(-x) = 3(-1)

x = - 3

Now go back to the original equation I have called the second equation

2x = 3y

2(-3) = 3y                  Put in - 3 for x

- 6 = 3y                     Divide by 3

-6 / 3 = y

y = - 2


8 0
3 years ago
Jackson has a rope 1 foot 8 inches long. He cuts it into 4 equal pieces. How many inches long is each piece?
mote1985 [20]
1 foot  8 inches.

1 foot = 12 inches.

1 foot  8 inches = 1 foot + 8 inches = 12 inches + 8 inches = 20 inches.

He cuts into 4 equal pieces.

=  20 / 4

= 5 inches.

<span>Each piece would be 5 inches long.</span>
5 0
3 years ago
Two slits are illuminated by a 348 nm light. The angle between the zeroth-order bright band at the center of the screen and the
Andre45 [30]

Answer:0.369 m

Step-by-step explanation:

Given

Distance between slit and screen is D=154 cm

Wavelength \lambda =348 nm

Angle between zeroth order bright fringe and Fourth-order bright fringe is \theta =13.5^{\circ}

let distance between the slits be d

Distance of n th bright fringe From central Fringe is given by

y_n=\frac{nD\lambda }{d}

Also \tan \theta =\frac{y_4}{D}

y_4=\tan (13.5)\cdot 1.54

y_4=0.24\times 1.54

y_4=0.369 m

5 0
3 years ago
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