Searches related to which ordered pair (ab) is a solution to the given system (2a -5b=1, 3a+5b=14

Ordered pair: (3,1)

Step-by-step explanation:

Given: System of equation

2a - 5b = 1  and  3a + 5b = 14

Using elimination method.

In this method, we make same coefficient of any one variable and cancel it.

2a - 5b = 1  

3a + 5b = 14

We make coefficient of a same.

2a - 5b = 1     ( Multiply by 3)

6a - 15b = 3

3a + 5b = 14   (Multiply by -2)

-6a - 10b = -28

Add both equation

6a - 15b = 3

-6a - 10b = -28

     -25b = -25

          b = 1

Put b=1 into 2a - 5b = 1  

2a - 5(1) = 1

        2a = 6

          a = 3

Solution: a=3 and b=1

Ordered pair: (3,1)

Hence, The Ordered pair (3,1) is a solution to the given system of equation.

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.