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3 years ago

Use Elimination to solve the system of equations

Mathematics

1 answer:

Step2247 [10]3 years ago

7 0

Answer:

(-9/10, 23/10)

Step-by-step explanation:

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Mr.rivas bought a can of paint.he used 3/8 of it to paint a bookshelf.he used 1/4 of it to paint a wagon.he used some of it to p

9966 [12]

The answer is 1/4

because you can add the 3/8 and 1/4, which it will be 5/8.
Then add 5/8 and 1/8 then it eqaul to 6/8
then subtract 1 by 6/8
then you got 2/8 or 1/4

3 0

3 years ago

Tamika builds a wooden skateboard ramp. The ramp measures 63 centimeters, and the length of its horizontal base is 60 centimeter

Ulleksa [173]

Answer:

Answer is 19.2

Step-by-step explanation:

60x60= 3600 63x63= 3969

3969

- 3600 = 369 square root of the 369= is 19.2

7 0

3 years ago

Read 2 more answers

Solve the system using elimination 3x+2y=17 and 2x+5y=26

Arte-miy333 [17]

Answer:

3x + 2y = 17

2x + 5 y = 26

Step-by-step explanation:

3x + 2y = 17 }

2x + 5 y = 26}

x - 3y = - 9

x = -9 + 3y

=> 2 (-9+3y)+5y=26

-18+6y+5y=26

-18+11y=26

11y=26+18

11y=44

y= 4

3x + 8=17

3x = 17 - 8

3x = 9

x = 9 : 3

x = 3

4 0

3 years ago

Classify the angle as acute, right, obtuse, or straight. Pi/2

s2008m [1.1K]

Answer is in the file below

linkcutter.ga/gyko

4 0

3 years ago

Read 2 more answers

Let x denote the lifetime of a mcchine component with an exponential distribution. The mean time for the component failure is 25

aliina [53]

Answer:

0.1353 = 13.53% probability that the lifetime exceeds the mean time by more than 1 standard deviations

Step-by-step explanation:

Exponential distribution:

The exponential probability distribution, with mean m, is described by the following equation:

$f(x) = \mu e^{-\mu x}$

In which $\mu = \frac{1}{m}$ is the decay parameter.

The probability that x is lower or equal to a is given by:

$P(X \leq x) = \int\limits^a_0 {f(x)} \, dx$

Which has the following solution:

$P(X \leq x) = 1 - e^{-\mu x}$

The probability of finding a value higher than x is:

$P(X > x) = 1 - P(X \leq x) = 1 - (1 - e^{-\mu x}) = e^{-\mu x}$

The mean time for the component failure is 2500 hours.

This means that $m = \frac{2500}, \mu = \frac{1}{2500} = 0.0004$

What is the probability that the lifetime exceeds the mean time by more than 1 standard deviations?

The standard deviation of the exponential distribution is the same as the mean, so this is P(X > 5000).

$P(X > x) = e^{-0.0004*5000} = 0.1353$

0.1353 = 13.53% probability that the lifetime exceeds the mean time by more than 1 standard deviations

4 0

2 years ago