Answer: Post a picture of the question.
Step-by-step explanation:
Add <span>19x</span> and x to get <span>20x</span>.<span><span><span><span><span>20x</span><span>−y</span></span><span><span>−2</span>z</span></span>+<span>5y</span></span>+<span>2z</span></span>Add <span>−y</span> and <span>5y</span> to get <span>4y</span>.<span><span><span><span>20x</span>+<span>4y</span></span><span><span>−2</span>z</span></span>+<span>2z</span></span>Add <span><span>−2</span>z</span> and <span>2z</span> to get 0.<span><span><span>20x</span>+<span>4y</span></span>+0</span>Add <span>20x</span> and 0 to get <span>20x</span>.<span><span>20x</span>+<span>4<span>y
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hope i helped best of luck :)
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A ratio is a statement of how two numbers compare so never
Hello :
the equation 3x^2+4x-7=0 has 2 solutions because : ac <span>< 0
a = 3 b=4 c= -7
</span>Δ = b²-4ac....... b² ≥ 0 and -4ac > 0 ..... (ac < 0 )
coclusion : Δ>0.....(2 solutions)
