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3 years ago

2x+3y= -1 3x+4y = -4

Mathematics

1 answer:

Mariana [72]3 years ago

3 0

Answer:

Point Form- (-8,5)

Equation Form- x= -8, y= 5

Add the equations in order to solve for the first variable. Plug this value into the other equation in order to solve for the remaining variables.

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<img src="https://tex.z-dn.net/?f=%5Csqrt%5B4%5D%7BW%7D%20%3D%202" id="TexFormula1" title="\sqrt[4]{W} = 2" alt="\sqrt[4]{W} = 2

solmaris [256]

Answer:

Step-by-step explanation:

To find W raise each of the sides of the equation to the power 4 to make W stand alone

That's

We have

W = 2⁴

We have the final answer as

Hope this helps you

6 0

3 years ago

In a normal distribution, what is the probability that a data value will fall below the

Serga [27]

Answer:

A 99.96%

Step-by-step explanation:

The z score shows by how many standard deviations the raw score is above or below the mean. The z score is positive if the raw score is above the mean while the z score is negative if the raw score is below the mean. The z score is given by:

$z=\frac{x-\mu}{\sigma} \\\\where\ z=z-score,\ x=raw\ score,\mu=mean, \ \sigma=standard\ deviation\\\\For\ a\ sample\ size(n):\\\\z=\frac{x-\mu}{\sigma/\sqrt{n} }$

The probability can be gotten from the normal distribution table. Therefore from the normal table:

P(z < 3.37) = 0.9996 = 99.96%

8 0

2 years ago

Solve this system of equations by graphing . first graph the equations then type the solution .

Lena [83]

9514 1404 393

Answer:

(x, y) = (5, -4)

Step-by-step explanation:

The Desmos graphing calculator is a handy tool for solving questions like this one. It tells you the solution is ...

(x, y) = (5, -4)

5 0

3 years ago

In roulette, you may bet whether the number that comes up is odd (or even). (Remember that 0 and 00 do not count as either odd o

EastWind [94]

Answer: - 0.027

Step-by-step explanation:

Win = any even number between (0 - 36)

Therefore,

Lose = any odd number between 0 —36 including 0

Assume Bet amount = $1

Expected value is calculate by summing all possible outcomes by their respective probabilities.

Expected value = [(p(winning) × net win value) + (p(losing +net loss value]

P(winning) = p(even) = 18/37

P(losing) = p(odd) +p(0) = 19/37

Net win value = $2

Net loss value = $-1

Expected value = [(18/37) × ($1) + (19/37) × (-$1)]

Expected value = 0.48648648 - 0.51351351

Expected value = - 0.027

7 0

2 years ago

A $500 couch is marked up 20%. What is the new price of the couch?

Aleks04 [339]

Pretty sure the answer is $600

Hope this helps

6 0

3 years ago