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2 years ago

Consider the expression

Mathematics

1 answer:

storchak [24]2 years ago

6 0

Answer:

5/6(1/2x)+5/6(6)-3x

-31x/12+5/12-3x

-3x+5/12+5

Step-by-step explanation:

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What is 2x+y=4 and 2x+y=-1

butalik [34]

Answer:

{x,y} = {5,6}

Step-by-step explanation:

// Solve equation [1] for the variable x

[1] x = y - 1

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

[2] 2•(y -1) - y = 4

[2] y = 6

// Solve equation [2] for the variable y

[2] y = 6

// By now we know this much :

x = y-1

y = 6

// Use the y value to solve for x

x = (6)-1 = 5

5 0

3 years ago

Read 2 more answers

A box contains 5 red balls, 6 white balls and 9 black balls. Two balls are drawn at

valina [46]

Answer:

$P(Same)=\frac{61}{190}$

Step-by-step explanation:

Given

$Red = 5$

$White = 6$

$Black = 9$

Required

The probability of selecting 2 same colors when the first is not replaced

The total number of ball is:

$Total = 5 + 6 + 9$

$Total = 20$

This is calculated as:

$P(Same)=P(Red\ and\ Red) + P(White\ and\ White) + P(Black\ and\ Black)$

So, we have:

$P(Same)=\frac{n(Red)}{Total} * \frac{n(Red) - 1}{Total - 1} + \frac{n(White)}{Total} * \frac{n(White) - 1}{Total - 1} + \frac{n(Black)}{Total} * \frac{n(Black) - 1}{Total - 1}$

<em>Note that: 1 is subtracted because it is a probability without replacement</em>

$P(Same)=\frac{5}{20} * \frac{5 - 1}{20- 1} + \frac{6}{20} * \frac{6 - 1}{20- 1} + \frac{9}{20} * \frac{9- 1}{20- 1}$

$P(Same)=\frac{5}{20} * \frac{4}{19} + \frac{6}{20} * \frac{5}{19} + \frac{9}{20} * \frac{8}{19}$

$P(Same)=\frac{20}{380} + \frac{30}{380} + \frac{72}{380}$

$P(Same)=\frac{20+30+72}{380}$

$P(Same)=\frac{122}{380}$

$P(Same)=\frac{61}{190}$

4 0

2 years ago

3. The sum of a number of 2 digits and of the number formed by reversing the digits is 110, and the difference of the digits is

VladimirAG [237]

Answer:

Anahdbd8enduemahehnwkh2vehnsnbvcjuygvvnic

Hinde ko po talaga alam

Step-by-step explanation:

Bcbvcujrirjrhjd26yehfnx

Sorry po talaga

4 0

2 years ago

How do I do this??? I need help please

Rufina [12.5K]

Answer:

5; 10; 20.

Step-by-step explanation:

the 1st step is shown with orange colour, described on the right part; the 2d step is shown with blue colour, described on the right part of the picture.

3 0

3 years ago

Will mark as branilest and heart if help

Natali5045456 [20]

Answer:

Step-by-step explanation:

as the easiest way to calculate without the help of a calculator ¯\_(ツ)_/¯

3 0

2 years ago