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3 years ago

I need help on this what's the answer for it 2/7 + 2/3 =

Mathematics

2 answers:

Allushta [10]3 years ago

4 0

Your answer will be 20/21. (:

slava [35]3 years ago

3 0

20/21 is the answer to your problem.

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What are 6 whole numbers -3.5 and 5.5

Blababa [14]

Answer:

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3 0

3 years ago

3x – 2y = 17 <br> –2x – 5y = 14 <br> Solve using Elimination Please show work

OleMash [197]

Answer:

The solution is x=3 , y=-4 or (3,-4)

Step-by-step explanation:

Given equations (1 and 2) are:

$3x- 2y = 17\\-2x -5y = 14$

To solve a system of equation with elimination method, the co-efficients of one of the variables has to be equated and then the equations are added or subtracted to get an equation in one variable.

Multiplying equation 1 by 2:

$2(3x-2y) = 2*17\\6x-4y = 34\ \ \ \ \ Eqn\ 3$

Multiplying equation 2 by 3

$3(-2x-5y) = 3*14\\-6x-15y = 42\ \ \ \ Eqn\ 4$

Adding equation 3 and 4

$(6x-4y) + (-6x-15y) = 34+42\\6x-4y-6x-15y = 76\\-19y = 76\\\frac{-19y}{-19} = \frac{76}{-19}\\y = -4\\$

Putting y = -4 in equation 1

$3x-2(-4) = 17\\3x+8 = 17\\3x = 17-8\\3x = 9\\\frac{3x}{3} = \frac{9}{3}\\x = 3$

Hence,

The solution is x=3 , y=-4 or (3,-4)

3 0

3 years ago

How to solve −3/4n≤3.

mars1129 [50]

Answer:

n ≥ -4

Step-by-step explanation:

-3/4n ≤ 3

-4/3(-3/4n) ≤ 3(-4/3)

n ≥ -12/3

n ≥ -4

CHECK:

correct

-3/4(-4) ≤ 3

12/4 ≤ 3

3 = 3

correct

-3/4(5) ≤ 3

-15/4 ≤ 3

-3.75 < 3

incorrect

-3/4(1) ≤ 3

-3/4 is not ≤ 3

6 0

3 years ago

In her dog walking business, Mrs. Alvarez walks 2 large dogs and 8 small dogs. Compare the number of small dogs to large dogs.

lisabon 2012 [21]

Answer:

Step-by-step explanation:

8 0

4 years ago

Read 2 more answers

Help me on this please

kolbaska11 [484]

The answer : C
Yea its C

5 0

2 years ago