When checking if (9,4) was a solution to 3y - 2x = 19, Lev said that it was. Why is he incorrect
1 answer:
Lev was incorrect because both sides of equation are not equal when putting (9,4) in the equation.
Step-by-step explanation:
Given equation is:
We have to check if the point (9,4) is the solution to the equation or not
So putting x=9 and y = 4 in equation
He was wrong when he said that (9,4) is the solution to the equation because both the sides of the equation are not equal when putting the point in the equation.
In order for a point to be the solution of an equation, both sides of the equation should be equal after putting the point.
Lev was incorrect because both sides of equation are not equal when putting (9,4) in the equation.
Keywords: Equation, solution
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70 flowers were planted in all.
Step-by-step explanation:
Let,
Tulips = t
Daises = d
Lilies = l
Total tulips planted = 42
She planted 2 times as many tulips as daises.
t=2d
Putting t=42
Dividing both sides by 2
And 3 times as many daisies as lilies.
d=3l
Putting d=21
Dividing both sides by 3
Total flowers planted = Tulips + Daisies + Lilies
Total flowers planted = 42 + 21 + 7 = 70
70 flowers were planted in all.
Keywords: division, addition
Learn more about addition at:
#LearnwithBrainly