 # High school math questions and answers

Recent questions in Secondary UkusakazaL 2020-10-23

### part of $10,000 is invested at 11% simple interest account, the rest is at 14% simple interest account. If the annual income is$1,265, how much is invested at each rate? (solve the equations/ inequalities for x) sodni3 2020-10-23

### A single constant force $F=\left(3i+5j\right)$ N acts ona 4.00-kg particle. (a) Calculate the work done by this forceif the particle moves from the origin to the point having the vector position $r=\left(2i-3j\right)m$. Does thisresult depend on the path? Explain. (b) What is the speed ofthe particle at r if its speed at the origin is 4.00 m/s? (c) What is the change in the potential energy? ankarskogC 2020-10-23

### A compound consisting of C, H and O only, has a molar mass of 331.5g/mol. Combustion of 0.1000g of this compound caused a 0.2921g increase in the mass of the CO2 absorber and a 0.0951 g increasein the mass of the H2O absorber. What is the empirical formula ofthe compound? What is ment by absorber ? product? Rivka Thorpe 2020-10-23

### A closed container is partially filled with water. Initially, theair above the water is at atmospheric pressure and the gauge pressure at the bottom of the wateris 2500 Pa. Then additional air is pumped in, increasing thepressure of the air above the water by 1500 Pa. Tolnaio 2020-10-23

### In the vertical jump, an athlete starts from a crouch andjumps upward to reach as high as possible. Even the best athletesspend little more than 1.00 s in the air (their "hang time"). Treatthe athlete as a particle and let be his maximum height above the floor. Toexplain why he seems to hang in the air, calculate the ratio of thetime he is above /2 moving up to the time it takes him to go from thefloor to that height. You may ignore air resistance. I think I have to use the formula $ymax=\frac{1}{2a{t}^{2}}$ and solve for t. So $t=\sqrt{\frac{2{y}_{max}}{a}}$, and then do it again when it isymax/2. But then I get stuck there. avissidep 2020-10-23

### How many of the following are found in 15.0 kmol of benzene(C6H6)? (a) lb-mole C6H6 (b) mol (g*atom) C (c) mol H (d) g C (e) g H (f) molecules of C6H6 (g) kg C6H6 (h) mol C6H6 jernplate8 2020-10-23

### A pump is to lift 18.0 Kg of water per min through a height of 3.60m. What output rating (watts) should the pump motor have? Do we do the following? $P=mg\frac{y}{t}=\frac{\left(18x9.8x3.60\right)}{60\mathrm{sec}}=10.584W$ ? Thanks! Dolly Robinson 2020-10-23

### A 2 meter stick is parallel to a uniform 200N/C electricfield. the potential difference between its ends is a)0 b)$1.6×{10}^{-17}V$ c)$3.2×{10}^{-17}V$ d)100v e)400V Armorikam 2020-10-23

### A lunch tray is being held in one hand, as the drawing illustrates. The mass of the tray itself is 0.200 kg, and its center of gravity is located tits geometrical center. On the tray is a 1.00 kg plate of food and a 0.190 kg cup of coffee. Obtain the force T exerted by the thumb and the force F exerted by the four fingers. Both forces act perpendicular to the tray, which is being held parallel to the ground.  Zoe Oneal 2020-10-23

### Draw resonance structures to show in which position nitrobenzene will nitrate to form dinitrobenzene. Efan Halliday 2020-10-23

### Is $\frac{4}{\frac{6}{7}}=4$? Cem Hayes 2020-10-23

### Use the Integral Test to determine whether the infinite series is convergent. $\sum _{n=1}^{\mathrm{\infty }}\frac{5}{{4}^{\mathrm{ln}n}}$ texelaare 2020-10-23

### Identify a convergence test for the following series. If necessary, explain how to simplify or rewrite the series before applying the convergence test. You do not need to carry out the convergence test. $\sum _{k=3}^{\mathrm{\infty }}\frac{2{k}^{2}}{{k}^{2}-k-2}$ jernplate8 2020-10-23

### Radius and interval of convergence Determine the radius and interval of convergence of the following power series. $x-\frac{{x}^{3}}{4}+\frac{{x}^{5}}{9}-\frac{{x}^{7}}{16}+...$ tinfoQ 2020-10-23

### Convert the binomial probability to a normal distribution probability using continuity correction. P (x <= 150). sibuzwaW 2020-10-23

### The close connection between logarithm and exponential functions is used often by statisticians as they analyze patterns in data where the numbers range from very small to very large values. For example, the following table shows values that might occur as a bacteria population grows according to the exponential function P(t)=50(2t): Time t (in hours)012345678 Population P(t)501002004008001,6003,2006,40012,800 a. Complete another row of the table with values log (population) and identify the familiar function pattern illustrated by values in that row. b. Use your calculator to find log 2 and see how that value relates to the pattern you found in the log P(t) row of the data table. c. Suppose that you had a different set of experimental data that you suspected was an example of exponential growth or decay, and you produced a similar “third row” with values equal to the logarithms of the population data. How could you use the pattern in that “third row” to figure out the actual rule for the exponential growth or decay model? amanf 2020-10-23

### A circle has parametric equations a.Find Cartesian equation of the circle b.Write down the radius and the coordinates of the centre of the circle c. Write down a suitable domain of t which defines one full revolution around the circle.  sjeikdom0 2020-10-23

### If you solve a work-rate problem and your solution, which represents the amount of time it would take working together, exceeds the individual working alone times that are given, then how do you know your solution is unreasonable? Explain. Clifland 2020-10-23

### The total revenue R (in dollars) is directly proportional to the number of units sold x. When 500 units are sold, the total revenue is \$4825. Find a mathematical model that relates the total revenue R to the number of units sold x. Rui Baldwin 2020-10-23

### Identify the lines that are parallel. Line 1: $y=-5$ Line 2: $4y-16x=-1$ Line 3: $x=-6$ Line 4: $y+5=4\left(x+1\right)$

Turning back to high school math can be essential to understand engineering tasks that you may encounter later. The high school math problems have all the basics that have good equations and answers, which will let you see things clearly. The list of high school math questions below will help you identify your weaknesses and find various solutions. Taking a look at high school math equations, you will see certain parts that can be applied to Physics. In either case, the best way is to learn by example, which is why high school math problems with answers will be essential.