Questions in mathematics

Questions in mathematics

📝 Answered - Simplify $20+5^2 \times 2$

📝 Answered - Simplify: $19 \sqrt{6}+25 \sqrt{7}+3 \sqrt{6}+6 \sqrt{7}$

📝 Answered - Solve the following inequality using the algebraic approach: $5 x-1<2 x+11$ A. $x<\frac{12}{7}$ B. $x<\frac{10}{3}$ C. $x<\frac{10}{7}$ D. $x<4$

📝 Answered - Instructions: For the following real-world problem, solve using any method. Use what you've learned to determine which method would be best. Put your answer in the context of the problem and determine the appropriate final answer. Jessica is practicing her dives off the diving board. When she dives into the water, the path her body makes and where she resurfaces can be modeled by the equation [tex]$0=x^2-6 x$[/tex] where [tex]$x$[/tex] is the number of horizontal feet she travels. Solve the equation to find the number of feet she will travel before coming back to the surface of the water. The two solutions to the equation are: [tex]$x=$[/tex] [$\\square$] or [$\\square$] Which of your solutions gives the horizontal distance Jessica has traveled when she returns to the surface? [tex]$x=$[/tex] [$\\square$] feet

📝 Answered - What is the following product? $(2 \sqrt{7}+3 \sqrt{6})(5 \sqrt{2}+4 \sqrt{3})$ A. $6 \sqrt{10}+16 \sqrt{2}+42$ B. $8 \sqrt{10}+30 \sqrt{2}+66$ C. $7 \sqrt{14}+6 \sqrt{21}+16 \sqrt{3}+21 \sqrt{2}$ D. $10 \sqrt{14}+8 \sqrt{21}+30 \sqrt{3}+36 \sqrt{2}$

📝 Answered - Analyze the following budget, with an income of $600, to determine how much can be spent on food for the month. | Month | Budgeted Amount | | ----------------- | --------------- | | Cell Phone | $65 | | Food | $ | | Entertainment | $95 | | College Savings | $200 | | Car Expenses - Gas, Insurance | $160 | A. $210 can be spent on food. B. $145 can be spent on food. C. $80 can be spent on food. D. $260 can be spent on food. Please select the best answer from the choices provided

📝 Answered - A curious student created a performance profile of his favourite cricketer as [tex]R = -x^5 + 6x^4 - 30x^3 + 80x^2 + 70x + c[/tex], where R is the total cumulative runs scored by the cricketer in z matches. He tried to find the value of c. If he uses the Sum Squared Error method, then what will be the value of c? | No. of matches | Total cumulative score | |---|---| | 1 | 120 | | 2 | 285 | | 3 | 361 |

📝 Answered - What is the value of \( \frac{2 \cdot 39^2 - 1.61^2}{2 \cdot 39 - 1.61} \)?

📝 Answered - Classify the angle formed by lines measuring 40°.

📝 Answered - 16. Center (2/5, -3/7), radius 11 17. Center (6, -5), radius 4 18. Diameter with endpoints (-1, 3) and (9, 1) 19. Diameter with endpoints (-2, -1) and (6, 3) 20. Diameter with endpoints (3, -5) and (6, 4)