MATHEMATICS MIDDLE SCHOOL

Is(6, -8) a solution to the inequality 2x − y < 20 ?

Answers

Answer 1

Answer:

20 is equal to 20 and not less. So, (6,-8) is not the solution to inequality 2x-y<20

Step-by-step explanation:

We need to find if (6, -8) a solution to the inequality 2x − y < 20 ?

putting x =6 and y = -8 in the given inequality

$2x-y<20\n2(6)-(-8)<20\n12+8 < 20\n20 < 20(not\,\,true)$

Since 20 is equal to 20 and not less. So, (6,-8) is not the solution to inequality 2x-y<20

Keywords: Inequality

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What value of k makes the equation true? 12 (–17) = –17 + k

Answers

is there any sign between 12 and -17 on the left side?

if no, then this is to be interpreted as a multiplication and is equal to -204.

so we have -204=-17+k

which means

-204+17=k

-187=k

so k is -187

if thre is a plus between the 12 and (-17) then k would be 12 (and both sides of the equation would be essentially the same, just inverted order)

leo has a total of 45¢ he has some dimes and pennies how many diffrent combinations of dimes and pennies could leo have make a table to solve

Answers

He could have 4 dimes and 5 pennies, 0 dimes and 45 pennies, 1 dime and 35 pennies, 2 dimes and 25 pennies, 3 dimes and 15 pennies
That would be 5 different combinations then just put the numbers in the the table. Dimes on one side and pennies on the other

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