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2 years ago

A can do a piece of work in 3 days and B in 6 days. In how many days will they do it together?

Mathematics

2 answers:

mr Goodwill [35]2 years ago

5 0

Answer: 2 days

Step-by-step explanation:

We will add there work together

= 1/3 + 1/6

= 2/6 + 1/6 (LCM 6)

= 3/6

= 1/2

Therefore 1/2 = 2 days

Therefore it will take them 2 days

please click thanks and mark brainliest if you like :)

Sladkaya [172]2 years ago

3 0

Answer:

What is a can???????plsssssss

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Becka can make a bracelet in 2 minutes.

Black_prince [1.1K]

Answer:

2x = y

Step-by-step explanation:

x is how many bracelets made and each bracelet takes 2 minutes to make so x times 2 or 2x and y is the total time took so 2x=y

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2 years ago

Solve -7/3(12s+24)+14=-14

Citrus2011 [14]

Answer:

s = -1

Step-by-step explanation:

-7/3(12s + 24) + 14 = -14

-28s - 56 + 14 = -14

-28s - 42 = -14

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2 years ago

Solve the system of equations by finding the reduced row echelon form of the augmented matrix. Write the solutions for x and y i

Gwar [14]

Answer:

The solutions for the given system of equations are:

$\left \{ {{x=-5} \atop {y=12-4z}} \right.$

Step-by-step explanation:

Given the equation system:

$\left \{ {{3x+y+4z=-3} \atop {-x+y+4z=17}} \right.$

We obtain the following matrix:

$\left[\begin{array}{cccc}3&1&4&-3\\-1&1&4&17\end{array}\right]$

Step 1: Multiply the fisrt row by 1/3.

$\left[\begin{array}{cccc}1&\frac{1}{3} &\frac{4}{3}&-1\\-1&1&4&17\end{array}\right]$

Step 2: Sum the first row and the second row.

$\left[\begin{array}{cccc}1&\frac{1}{3} &\frac{4}{3}&-1\\0&\frac{4}{3} &\frac{16}{3}&16\end{array}\right]$

Step 3: Multiply the second row by 3/4.

$\left[\begin{array}{cccc}1&\frac{1}{3} &\frac{4}{3}&-1\\0&1 &4&12\end{array}\right]$

Step 4: Multiply the second row by -1/3 and sum the the first row.

$\left[\begin{array}{cccc}1&0 &0&-5\\0&1 &4&12\end{array}\right]$

The result of the reduced matrix is:

$\left \{ {{x=-5} \atop {y+4z=12}} \right.$

This is equal to:

$\left \{ {{x=-5} \atop {y=12-4z}} \right.$

These are the solutions for the system of equations in terms of z, where z can be any number.

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3 years ago

Determine the sum -11% +43

Zinaida [17]

Answer:

its 42.89

Step-by-step explanation:

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3 years ago

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Step-by-step explanation:

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2 years ago

A can do a piece of work in 3 days and B in 6 days. In how many days will they do it together? ​

A can do a piece of work in 3 days and B in 6 days. In how many days will they do it together?