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Questions in Grade High-school

[Done] \frac{y^2+2 y+1}{y^2+y} \div \frac{y^2-1}{y^{2}}

[Done] $1.92 \overline{)1,152}$

[Done] The law of cosines for [tex]\triangle R S T[/tex] can be set up as [tex]$5^2=7^2+3^2-2(7)(3) \cos (S)$[/tex]. What could be true about [tex]\triangle R S T$[/tex]? Law of cosines: [tex]$a^2=b^2+c^2-2 b c \cos (A)$[/tex] A. [tex]$r=5[/tex] and [tex]$t=7$[/tex] B. [tex]$r=3[/tex] and [tex]$t=3$[/tex] C. [tex]$s=7[/tex] and [tex]$t=5$[/tex] D. [tex]$s=5[/tex] and [tex]$t=3$[/tex]

[Done] Simplify the expression by multiplying the polynomials: $(-x-3)(-7 x+5)$

[Done] Reflect How can you explain to a classmate the difference between a terminating and a repeating decimal?

[Done] What is the value of the expression below when [tex]$w=7$[/tex]? [tex]$w^2+3 w-10$[/tex]

[Done] Solve for $y$, given: $\begin{array}{c} y-5=1(x+2) \\ y=1 x+7 \times \end{array}$

[Done] A polynomial function has a root of -7 with multiplicity 2, a root of -1 with multiplicity 1, a root of 2 with multiplicity 4, and a root of 4 with multiplicity 1. If the function has a positive leading coefficient and is of even degree, which statement about the graph is true? The graph of the function is positive on $(2,4)$. The graph of the function is negative on $(4, \infty)$. The graph of the function is positive on ($-\infty,-7$). The graph of the function is negative on $(-7,-1)$.

[Done] What is the solution to this equation? [tex]$\ln (x+6)-\ln (2 x-1)=0$[/tex] A. [tex]$x=-7$[/tex] B. [tex]$x=5$[/tex] C. [tex]$x=7$[/tex] D. [tex]$x=-5$[/tex]

[Done] [tex]\frac{21+3^5 \div 9}{75-(7+2)^2}[/tex]