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Questions in mathematics

[Answered] Observe the expression below and select the true statement(s). [tex]$3 y(7+2 x)+9 x y-10$[/tex]

[Answered] What is the equation of the circle with center $(-3.2,2.1)$ and radius $4.3$? A. $(x-2.1)^2-(y+3.2)^2=(4.3)^2$ B. $(x+3.2)^2+(y-2.1)^2=4.3^2$ C. $(x-3.2)^2+(y+2.1)^2=(4.3)^2$ D. $(x+2.1)^2+(y-3.2)^2=4.3^2

[Answered] Solve the inequality. [tex]11 \geq -4x + 3 \ \textgreater \ -5[/tex]

[Answered] Which equation can be solved using the expression [tex]$\frac{-3 \pm \sqrt{(3)^2+4(10)(2)}}{2(10)}$[/tex] for [tex]$x$[/tex]? A. [tex]$10 x^2=3 x+2$[/tex] B. [tex]$2=3 x+10 x^2$[/tex] C. [tex]$3 x=10 x^2-2$[/tex] D. [tex]$10 x^2+2=-3 x$[/tex]

[Answered] We do Together. On a recent homework assignment, Elf needed to solve the equation [tex]g^2 \approx 49[/tex]. He incorrectly wrote [tex]g=-7[/tex]. PART A What is the correct solution? PART B Communicate and Justify: What error did Elf likely make? (1) He did not take the square root of 49 correctly since [tex](-7)^2 \neq 49[/tex]. (2) He did not solve the

[Answered] [tex]\frac{7}{10} \div 2=[/tex]

[Answered] [tex]\frac{2 x+3}{3}+\frac{3 x-4}{6}=\frac{x-2}{2}[/tex]

[Answered] Write $0.\overline{2}$ as a fraction.

[Answered] Which formula can be used to describe the sequence below? [tex]27,9,3,1, \frac{1}{3}, \cdots[/tex] A. [tex]a_n=-3 a_{n-1} ; a_1=27[/tex] B. [tex]a_n=\frac{1}{3} a_{n-1} ; a_1=27[/tex] C. [tex]a_n=a_{n-1}-3, a_1=27[/tex] D. [tex]a_n=3 a_{n-1}-\frac{1}{3} \cdot a_1=27[/tex]

[Answered] Simplify [tex]$\left(\frac{1}{7}-\frac{1}{4}\right) \div \frac{11}{28}$[/tex]