3 years ago

Which situation CANNOT be represented by this equation? 3x+4=19

Mathematics

2 answers:

Artist 52 [7]3 years ago

4 0

Answer:

Penny is selling candles for $4 each at a fund-raiser.

If she starts selling with $3 to help her make change, how many candles, x, will she have to sell to end up with $19?

8090 [49]3 years ago

3 0

I'm going with B Pennt is seling candles for 4$ each at a fund raiser if I'm right please give me branlest

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(x, y) = (-1, 9)

Step-by-step explanation:

A graphical solution can be quick and easy. It shows the solution to be ...

(x, y) = (-1, 9)

Another suitable method is Cramer's rule. It makes use of a particular pattern of sum of products of coefficients and constants. The denominator in each case is the same sum of products.

x = (5(-29)-(-3)(31))/(5(2)-(-3)(14)) = -52/52 = -1

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