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2 years ago

Divide. Write your answer as a fraction in simplest form. -14/5÷ -7

Mathematics

2 answers:

gladu [14]2 years ago

6 0

Answer:

2/5

Step-by-step explanation:

Paraphin [41]2 years ago

5 0

Answer :
2/5

Explanation:

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Solve for slope. (-2,7) (-1,6)

Lostsunrise [7]

Answer:

m = - 1/3

Thats the answer.

Step-by-step explanation:

7 0

2 years ago

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A pie was cut into 8 equal pieces. If Malena ate 18 of the pie, and Lupe ate 58 of the pie, how many whole pieces of the pie are

Andru [333]

Answer:

2/8ths are left

Step-by-step explanation:

8 equal.pieces means 8/8

she ate 1/8 and he ate 5/8

thats 6/8

8/8 - 6/8 = 2/8

3 0

1 year ago

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Find x + y of this.

jeka57 [31]

Answer:

x + y = 170

Step-by-step explanation:

Using the vertical angle theorem, you can find out that:

x + y + 110 + 80 = 360.

You can simplify this to find x + y.

x + y + 110 + 80 = 360

simplify

x + y + 190 = 360

-190 both sides

x + y = 170

8 0

2 years ago

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Approximate the solutions to this system.

Nastasia [14]

Answer:

$x = \± 0.82$

$y =-3.18 \ or\ -4.82$

Step-by-step explanation:

Given

$y = 3x^2 + x - 6$

$y = x -4$

Required

The solution

First, we equate both expressions.

$y = y$

$3x^2 + x - 6 = x - 4$

Subtract x from both sides

$3x^2 - 6 = - 4$

Add 6 to both sides

$3x^2 = 2$

Divide both sides by 3

$x^2 = 0.667$

Solve for x

$x = \± \sqrt{0.667$

$x = \± 0.82$

To solve for y, we have:

$y = x -4$

This gives

$y = \± 0.82 - 4$

Split

$y = 0.82 - 4 \ or\ -0.82 - 4$

$y =-3.18 \ or\ -4.82$

4 0

2 years ago

Assume a Poisson random variable has a mean of 5 successes over a 125-minute period.

goldenfox [79]

Answer:

$\mu = 25$

$\lambda =0.04$

$P(X > 65 ) =0.0742$

Step-by-step explanation:

From the question we are told that

The number of success is n = 5

The time duration is N = 125 minutes

Generally the mean of the random variable is mathematically represented as

$\mu = \frac{N}{n}$

=> $\mu = \frac{125}{5}$

=> $\mu = 25$

Generally the rate parameter is mathematically represented as

$\lambda = \frac{1}{\mu}$

=> $\lambda = \frac{1}{25}$

=> $\lambda =0.04$

Generally the cumulative distribution function for exponential distribution function is

$F(x) = \left \{0 \ \ \ \ \ \ x \le 0}} \atop {1 -e^{-\lambda t }\ x>0}} \right.$

Generally the probability that the time to success will be more than 63 minutes is mathematically represented as

$P(X > 65 ) = 1 - P(X \le 65)$

Here

$P(X \le 65) = 1 -e^{-65 * \lambda }$

=> $P(X \le 65) = 1 -e^{-65 * 0.04 }$

=> $P(X \le 65) = 0.92573$

$P(X > 65 ) = 1 - 0.92573$

$P(X > 65 ) =0.0742$

7 0

2 years ago