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Questions in mathematics

📝 Answered - $\begin{array}{l}100 n=54 . \overline{4} \\ \frac{-10 n=5.4}{10 n=\frac{49}{49}} \\ \frac{90 n}{90 n}=\frac{49}{90} \\ \left.n=\frac{49}{90} \right\rvert\, 50.05 \overline{4}=\end{array}$

📝 Answered - Estimate the factors and solve. Which expression has an estimated product of $60? (29.5)(1.7) (13.2)(4.5) (4.67)(9.8) (7.3)(8.52)

📝 Answered - Which equation can be used to solve for $b$? $b=(8) \tan (30^{\circ})$ $b=\frac{8}{\tan (30^{\circ})}$ $b=(8) \sin (30^{\circ})$ $b=\frac{8}{\sin (30^{\circ})}$

📝 Answered - Which equation correctly uses the law of cosines to solve for the length [tex]$s$[/tex]? [tex]$9^2=s^2+10^2-2(s)(10) \cos \left(100^{\circ}\right)$[/tex] [tex]$9=s+10-2(s)(10) \cos \left(100^{\circ}\right)$[/tex] [tex]$10^2=s^2+100-2(s)(10) \cos \left(100^{\circ}\right)$[/tex] [tex]$s^2=9^2+10^2-2(9)(10) \cos \left(100^{\circ}\right)$[/tex]

📝 Answered - [\begin{array}{c}-4 \ -3.4\end{array}]－ $[-0.6]=$

📝 Answered - Joaquin used the table to predict the cost of one year of education at a four-year public university. | Category | Predicted Cost | | ---------------- | -------------- | | tuition | $9,450 | | room and board | $7,920 | | transportation | $2,680 | | books and fees | $1,875 | | other | $930 | He received a grant for $1,900. What is the minimum amount Joaquin will need to contribute to his education if he chooses to live at home? A. $13,035 B. $14,935 C. $20,955 D. $22,855

📝 Answered - Listen Select the value that completes the perfect square trinomial: [tex]x^2+24 x+[/tex] ______ 144 288 12 24

📝 Answered - What is the axis of symmetry of the function [tex]f(x)=-(x+9)(x-21)[/tex]? A. [tex]x=-15[/tex] B. [tex]x=-6[/tex] C. [tex]x=6[/tex] D. [tex]x=15[/tex]

📝 Answered - Factor $a x-2 b x-2 a y+4 b y$.

📝 Answered - Solve the inequality for $x$. $-3+2 x \leq-1$ Simplify your answer as much as possible.