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3 years ago

How many solutions does 2(3x -4) = 3x -8+3x

Mathematics

1 answer:

never [62]3 years ago

6 0

Answer:

no solutions

Step-by-step explanation:

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El resultado de 20 +(-60)-40 es

andrew-mc [135]

Answer:

-80

Step-by-step explanation:

20 +(-60) -40 = x

20 -60 -40 = x

20 -100 = x

-80 = x

El resultado es -80, espero que te haya ayudado :)

6 0

3 years ago

Suppose you flip a fair coin N times. Let random variable h be the number of heads that occur. Use the normal approximation to e

Mariana [72]

Answer:

If n = 1000000, then

$P(h E [495000, 505000]) = \int\limits^{50500}_{495000} {\frac{2}{\sqrt{2000000\pi}} e^{\frac{-(k-500000)^2}{500000} }} \, dk$

If n = 10400, then

$P(h E [495000, 505000]) = \int\limits^{50500}_{495000} {\frac{2}{\sqrt{2000000\pi}} e^{\frac{-(k-500000)^2}{500000} }} \, dk$

If N = 102, then

$P(h < 40 or h > 60) = 1-P(40$

Step-by-step explanation:

Since the coin is fair, then the probability that a filp is heads is 1/2. Given N tries, the amount of heads can be approximated with a Normal distribution with mean μ = N *1/2 = N/2 and standard deviation σ = √(N*1/2 * 1/2) = √N/ 2

The density function of that random variable is given by de following formula

$f_X(k) = \frac{1}{\sqrt{2\pi} * \sigma} e^{\frac{-(k-\mu)^2}{2\sigma^2} } = \frac{2}{\sqrt{2\pi N}} e^{\frac{-2(k-N/2)^2}{N} }$

If n = 1000000, then

$P(h E [495000, 505000]) = \int\limits^{50500}_{495000} {\frac{2}{\sqrt{2000000\pi}} e^{\frac{-(k-500000)^2}{500000} }} \, dk$

If n = 10400, then

$P(h E [495000, 505000]) = \int\limits^{50500}_{495000} {\frac{2}{\sqrt{2000000\pi}} e^{\frac{-(k-500000)^2}{500000} }} \, dk$

If N = 102, then

$P(h < 40 or h > 60) = 1-P(40$

4 0

3 years ago

Jason ran for days last week on Monday he ran 3.45 miles on Wednesday here and 0.82 miles farther than he went on Monday on Frid

disa [49]

15.82 miles
3.45 + 4.27 + 4.65 + 3.45 = 15.82 miles

4 0

3 years ago

Read 2 more answers

The axis of symmetry for a quadratic equation can be found using the formula x equals StartFraction negative b Over 2 a EndFract

alexandr402 [8]

Answer:

$a=-\frac{b}{2x}$

Step-by-step explanation:

The equation of a quadratic function is given as:

ax² + bx + c = 0

where a, b and c are the coefficient in the quadratic equation.

The axis of symmetry of the quadratic equation is given as:

$x=-\frac{b}{2a}$

To get the equation for a, we have to make a the subject of formula:

$x=-\frac{b}{2a}\\\\multiply\ both\ sides\ by \ 2a:\\\\x*2a=-\frac{b}{2a}*2a\\\\2ax=-b\\\\Divide\ through\ by\ 2a\\\\2ax/2a=-b/2a\\\\a=-\frac{b}{2x}$

5 0

4 years ago

Read 2 more answers

Pls help, I will give 50 points

Alchen [17]

I think this is the answer you are looking for

5 0

3 years ago