Questions in mathematics

Questions in mathematics

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

📝 Answered - $x^2+\frac{5 x+36}{x^2+5 x}=0$

📝 Answered - Find the number of units purchased for April. | | Beginning Inventory | Purchases | Units Sold | | :---- | :------------------ | :-------- | :--------- | | April | 7,000 | [?] | 1,500 | | May | 9,500 | 1,500 | 1,250 | | June | 9,750 | 700 | 3,000 | Ending Inventory = Beginning Inventory + Purchases - Units Sold

📝 Answered - The total cost of gasoline varies directly with the number of gallons purchased. Edie pays $22.68 for 12 gallons of gasoline. Which equation shows the relationship between the total cost of gasoline, $c$, and the number of gallons purchased, $n$? A. $c=22.68 n$ B. $c=1.89 n$ C. $n =1.89 c$ D. $n=22.68 c$

📝 Answered - Use the Graphing tool to graph the functions [tex]$f(x)=\log _4 x$[/tex] and [tex]$g(x)=\log _{0.25} x$[/tex]. Then identify the key features of each graph. Drag each feature to the correct location on the table. | Features of f only | Features of both f and g | Features of g only | | --- | --- | --- | | | | | domain of range of positive over the negative over the asymptote of [tex]$x$[/tex]-intercept of [tex]$( 0, \infty )$[/tex] [tex]$(-\infty, \infty)$[/tex] interval [tex]$(0,1)$[/tex] interval [tex]$(0,1)$[/tex] [tex]$x=0$[/tex] [tex]$(1,0)$[/tex] increasing as [tex]$x$[/tex] increases decreasing as [tex]$x$[/tex] increases

📝 Answered - Solve the equation by using the quadratic formula: [tex]3 x^2-1=7 x[/tex] a. [tex]\frac{7+\sqrt{37}}{6}, \frac{7-\sqrt{37}}{6}[/tex] c. [tex]\frac{-7+\sqrt{37}}{6}, \frac{-7-\sqrt{37}}{6}[/tex] b. [tex]\frac{7+\sqrt{61}}{6}, \frac{7-\sqrt{61}}{6}[/tex] d. [tex]\frac{-7+\sqrt{61}}{-6}, \frac{-7-\sqrt{61}}{6}[/tex] Please select the best answer from the choices provided.

📝 Answered - Divide. Select "Undefined" if applicable. $\frac{1}{20} \div 0=0$

📝 Answered - Consider the system of equations. [tex]y=-2 x+4[/tex] [tex]y=-\frac{1}{3} x-1[/tex] The solution is [tex](3,-2)[/tex]. Verify the solution. Which true statement appears in your check? A. [tex]4=4[/tex] B. [tex]-2=-2[/tex] C. [tex]-1=-1[/tex] D. [tex]-3=-3[/tex]

📝 Answered - After his hike, Brian calculated his average hiking speed to be 3.62 miles per hour. | Brian's Activity Time (hours) | |:-----------------------------------------------------------------------:| | Hiking | 3 | | Mountain Biking | 1.45 | | Horseback Riding | 1.2 | | Cross-Country Skiing | 0.75 | How far did Brian hike? A. 1.086 miles B. 10.86 miles C. 100.86 miles D. 108.6 miles

📝 Answered - What is the standard form of $3.43 \times 10^5$?