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4. When a key on piano is pressed, a sound is heard. What produces this sound?A. the vibrating key of the pianoB.The Vibrating String Of PianoC. the finger pressing the piano keyD. the air molecules inside the piano Pls help Ill brainlest ASAP Given b=4, c=1, A=120 for a triangle with sides a, b, c and angles A, B, C. What is the area of the triangle? Round to the nearest hundredth. How does scout react to the people in the gallery of the courtroom standing? PLESE HELP WILL GIVE BRAINLYESTYImagine that you are Andreas Vesalius. Write a short autobiographical statement that talks about who you are, where youre from, and some of your important contributions. What is equivalent to 3^-5 Read the sentences.Centerville's Fourth of July parade was a point of civic pride for almost everyone in the town.Although not every person was in the parade itself, most people helped plan and prepare for it.The root word civ means "citizen." Two words that use this root are civil and civilized. What isthe meaning of civic in the sentences?almost like a citizenboastful of citizensplanned for citizensrelating to a citizenDone > Not meeting with preconceivedexpectations can often lead toA. psychological exhaustionB. psychological alarmC. psychological resistanceD. psychological adaptation A nebula is often made up of hydrogen and helium gases.TrueFalse 5. In the regular decagon shown, what is the measure of angle 1? *1 pointOne Exterior Angle of a REGULAR PolygonOneEx 4 = 360(18 degreesO36 degrees72 degrees0180 degrees Seven gallons of a sugar solution was mixed with 4 gallons of a 80 percent sugar solution to make an 72 percent sugar solution. Find the percent concentration of the first solution. (a) 70% (b) 61% (c) 69% (d) 67% Where would you collectdata during anexperiment? Angle RelationshipsUse a calculator to find the approximate value of the expression. Round the answer to two decimal places.The cosine of the complimentary angle to 38a. 0.68b. -0.16c. -0.22d. 0.62Please select the best answer from the choices provided Please help. Determine which lines are parallel and which are perpendicular. Explain your reasoning. Alonzo runs each lap in 6 minutes. He will run at most 30 minutes today. What are the possible numbers of laps he will run today?Use n for the number of laps he will run today.Write your answer as an inequality solved for n. This data shows the test scores of different students:85, 90, 82, 65, 75, 96, 72, 90, 98, 70, 86, 92Create a histogram of this data.To create a histogram, hover over each distance range on the x-axis. Then click and drag up to plot the data.PLEASE HELP ASAP!!! Based on the above financial statements, calculate the following ratios for 2021: income statement Sales 480,000 cost of goods sold 243,200 salaries expense 55,200 depreciation expense 24,000 interest expense 4,500 rent expense 36,000 gain on equipment 0 loss on equipment disposal 1,400 364,300 net income 115,700 Statement of Retained Earnings Beginning Balance - Retained Earnings $ 36,300 Plus - Net Income 115,700 Less - Dividends (18,000) Ending Balance - Retained Earnings $ 134,000 Balance sheets 2020 2021 change Assets: Cash 27,500 72,600 45,100 Accounts Receivable 32,600 47,600 15,000 Inventory 48,000 54,800 6,800 prepaid expenses 7,200 5,200 (2,000) Equipment 56,000 77,000 21,000 Accum. Depr - Equipment (26,500) (32,500) (6,000) total assets 144,800 224,700 Liabilities: Accounts Payable 12,700 25,700 13,000 accrued Liabilities 3,800 5,000 1,200 Bonds Payable 72,000 40,000 (32,000) total liabilities 88,500 70,700 shareholders Equity: Common Stock 20,000 20,000 0 Retained Earnings 36,300 134,000 97,700 total equity 56,300 154,000 total liabilities and shareholder equity 144,800 224,700 A. Current Ratio B. Gross Profit Percentage C. Debt Ratio D. Debt to Equity Ratio Analyze the punnett square R represents round seeds r represents wrinkled seedsratio of phenotypes:ratio of genotypespercent of offspring with round seeds:percent of offspring with wrinkled seeds:I need awner like a reason not a choice question Please Help. Lateena solved the equation below. Is her solution correct? Explain why or why not?I've attached the picture for the problem. Suppose $3500 is invested at a rate of 5% per year compounded monthly.