$\frac{1}{6}x+\frac{1}{3}x+\frac{3}{7}(x-(\frac{1}{6}x+\frac{1}{3}x))=x\\\frac{3}{7}(x-(\frac{1}{6}x+\frac{1}{3}x))=27\\\frac{3}{7}(x-(\frac{1}{2}x))=27\\\frac{3}{7}(\frac{1}{2}x)=27\\x=126$

126 caps

5 0

3 years ago

Determining rational and irrational numbers quick 25 pts

Arlecino [84]

11/15 + 7 ⇒ rational ⇒ the sum of two rationals is always rational

√14+13 ⇒ irrational ⇒ the sum of a rational and an irrational is always irrational

30×√6 ⇒ irrational ⇒ the product of a nonzero rational and an irrational is always irrational

11/12 × 7/15 ⇒ rational ⇒ the product of two rationals is always rational

4 0

3 years ago

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