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Questions in Grade High-school

📝 Answered - 18. Higher Order Thinking a. Simplify the expression $(-13.2)+8.1$. b. How are $(-13.2)+8.1$ and $13.2+(-8.1)$ related? Explain without computing. c. Using a property of operations, what can you say about the sum of the two expressions?

📝 Answered - What are the solutions of the equation $(x+2)^2+12(x+2)-14=0$ ? Use $u$ substitution and the quadratic formula to solve. A. $x=-8 \pm 5 \sqrt{2}$ B. $x=-6 \pm 5 \sqrt{2}$ C. $x=-4 \pm 5 \sqrt{2}$ D. $x=-2 \pm 5 \sqrt{2}$

📝 Answered - What is the inverse of the function [tex]f(x)=2 x-10[/tex]? A. [tex]h(x)=2 x-5[/tex] B. [tex]h(x)=2 x+5[/tex] C. [tex]h(x)=\frac{1}{2} x-5[/tex] D. [tex]h(x)=\frac{1}{2} x+5[/tex]

📝 Answered - Solve for x. $-2(-3 x+5)-3 x+1=15$

📝 Answered - Error Analysis: The solution shown for the equation is incorrect. What is the correct solution? What is the error? [tex] \begin{aligned} -4(3-r) & =24 \\ -12-4 r & =24 \\ -4 r & =36 \\ r & =-9 \end{aligned} [/tex] The solution is ____. (Type the value of r.)

📝 Answered - a single power. 2. $\left(-5^5\right)^2$

📝 Answered - Solve the equation. Check your answer. [tex]\begin{array}{l} 1.5 x-0.25-0.5 x-1.75=2.5+2 x \\ x=\square \end{array}[/tex]

📝 Answered - Solve the equation. [tex]11+10=-3(5 x-7)[/tex]

📝 Answered - The main cable of a suspension bridge forms a parabola described by the equation [tex]y=a(x-50)^2+6[/tex]. What is the value of [tex]a[/tex]? -0.096 -0.0048 0.0048 0.096

📝 Answered - Write an equivalent expression by distributing the "-" sign outside the parentheses: $-(-7x + 3.2y + 8.3)$