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Questions in Grade College

[Terjawab] Perform the operation and simplify. $\begin{array}{c} \frac{x^2+8 x+16}{x+2} \div \frac{x^2+6 x+8}{x^2-4} \\ \frac{(x-[?])(x+\square)}{x+}\end{array}$

[Terjawab] Tim wants to model a dollhouse from a real house that measures 60 feet in length by 28 feet in width. He decides to use a scale in which [tex]$1 / 4$[/tex] inch equals 1 foot. What will the dimensions of his model be? Length = $\square$ inches Width = $\square$ inches

[Terjawab] A box with a mass of 7 kilograms is pushed up a ramp to a height of 5 meters. What is the work done against the force of gravity? Assume the ramp has negligible friction. A. 3.4 x 10² joules B. 6.9 x 10² joules C. 8.6 x 10² joules D. 1.7 x 10² joules

[Terjawab] Which best describes the structure of the poem "Safari Day in Kenya"? A. fixed form with a strict rhyme scheme B. fixed form with a loose meter C. free verse with rhyming quatrains D. free verse with varied line lengths

[Terjawab] If $y=2 x e^{-3 x}$, show that $\frac{d 2 y}{d x^2}+\frac{6 d y}{d x}+9 y=0$

[Terjawab] Read the sentence. During the scenic tour of the national park, the cascading waterfall was photographed repeatedly. Which grammatical structure is used in this sentence? A. active voice B. passive voice C. future tense D. present tense

[Terjawab] Use factoring to solve the quadratic equation. Check by substitution or by using a graphing utility and identifying $x$-intercepts. $5 x^2=8 x+4$ Rewrite the equation in factored form. $\square$ $=0$ (Factor completely.)

[Terjawab] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Terjawab] Investors use financial information to predict whether a A. company will recruit more employees. B. company has invested in buildings. C. company will pay salaries. D. company's stock price will increase. E. company's bond price will increase.

[Terjawab] Simplify: $-7 z^4-2 z+2+2 z^4+5 z-5$