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3 years ago

A) Solve the system by substitution. y = 5x – 3 -X – 5y = -11

Mathematics

2 answers:

Katen [24]3 years ago

8 0

Answer:

Step-by-step explanation:

the answer 4x-5y +2 = 0. 5y =-4x-2. y = -4x/5 -2/5 slope = -4/5

Allisa [31]3 years ago

3 0

Answer:

{y,x} = {2,1}

Step-by-step explanation:

// Solve equation [1] for the variable y

[1] y = 5x - 3

// Plug this in for variable y in equation [2]

[2] -5•(5x-3) - x = -11

[2] - 26x = -26

// Solve equation [2] for the variable x

[2] 26x = 26

[2] x = 1

// By now we know this much :

y = 5x-3

x = 1

// Use the x value to solve for y

y = 5(1)-3 = 2

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Your class is holdinga fundraiser for a local charity after the first week your class raised 1/8 goal after the second week your

n200080 [17]

Answer: $\dfrac{19}{40}$

Step-by-step explanation:

Given: Fraction of goal raised on first day = $\dfrac{1}{8}$

Fraction of goal raised after second day = $\dfrac35$

Now , Fraction of goal raised on second day = Fraction of goal raised after second day - Fraction of goal raised on first day

$=\dfrac35-\dfrac18\\\\=\dfrac{24-5}{40}\\\\=\dfrac{19}{40}$

Required fraction = $\dfrac{19}{40}$

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3 years ago

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g100num [7]

Answer:

Step-by-step explanation:

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3 years ago

-9=k-6

Shkiper50 [21]

Answer:

k = -3

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Step-by-step explanation:

Step 1: Define

-9 = k - 6

Step 2: Solve for k

Add 6 to both sides: -3 = k
Rewrite: k = -3

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3 years ago

What is the equation of the line that is parallel to the given

Artist 52 [7]

Answer:

For as far as I know -6=a-4+b

Step-by-step explanation:

The (-4,-6) are coordinates like (X,Y) now the formula your using is y= ax+b. So the only thing you have to do is fill X and y in from the coordinates into the formula.

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Read 2 more answers

The scheduled arrival time for a daily flight from Boston to New York is 9:35 am. Historical data show that the arrival time fol

Lady_Fox [76]

Answer:

The mean is 11.5 minutes and the standard deviation is of 6.64 minutes

Step-by-step explanation:

An uniform probability is a case of probability in which each outcome is equally as likely.

For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.

The mean is:

$M = \frac{a+b}{2}$

The standard deviation is:

$S = \sqrt{\frac{(b-a)^{2}}{12}}$

Arrival time of 9:18 am and a late arrival time of 9:41 am.

9:41 is 23 minutes from 9:18. So the time is uniformily distributed between 0 and 23 minutes, so a = 0, b = 23.

Mean:

$M = \frac{a+b}{2} = \frac{0+23}{2} = 11.5$

Standard deviation:

$S = \sqrt{\frac{(b-a)^{2}}{12}} = \sqrt{\frac{(23 - 0)^{2}}{12}} = 6.64$

The mean is 11.5 minutes and the standard deviation is of 6.64 minutes

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3 years ago