# Recent questions in Equations and inequalities

Equations and inequalities

### Solve the equation and inequalities. $$\displaystyle{5}{n}^{{2}}-{11}{n}+{2}={0}$$

Equations and inequalities

### Vince worked 18 hours last week. Part of the time he worked in a fast-food restaurant and part of the time he worked tutoring a high school student in mathematics. He was paid $7.25 per hour working in the restaurant and$15 per hour tutoring. If he earned $161.50, how many hours did he work at each job? Equations and inequalities ANSWERED asked 2021-07-04 ### Solve the equation and inequalities. $$\displaystyle{\left|{3}+{x}\right|}-{9}\leq{21}$$ Equations and inequalities ANSWERED asked 2021-07-02 ### Solve the following equations and inequalities for x. $$\displaystyle{x}^{{2}}={25}$$ Equations and inequalities ANSWERED asked 2021-07-01 ### x+y=2 x-y=2 Equations and inequalities ANSWERED asked 2021-06-29 ### Work each problem. Round to the nearest tenth of a degree, if necessary. Venus is the hottest planet, with a surface temperature of 867∘F. What is this temperature in Celsius? Equations and inequalities ANSWERED asked 2021-06-22 ### Solve the following equations and inequalities for x. $$\displaystyle{2}{\left({x}-{3}\right)}{>}{4}$$ Equations and inequalities ANSWERED asked 2021-06-22 ### During a test by the editors of an auto magazine, the stopping distance s (in metres) of the MacPherson X-2 racing car conformed to the rule $$\displaystyle{s}={f{{\left({t}\right)}}}={40}{t}−{5}{t}{2}{\left({t}≥{0}\right)}$$ where t was the time (in seconds) after the brakes were applied. a. Find an expression for the car's velocity v at any time t. b. What was the car's velocity when the brakes were first applied? c. What was the car's stopping distance for that particular test? Hint: The stopping time is found by setting v=0. Equations and inequalities ANSWERED asked 2021-06-20 ### Solve equation for t $$\displaystyle{A}={p}+{p}{r}{t}$$ Equations and inequalities ANSWERED asked 2021-06-20 ### Solve the following equations and inequalities for x. $$\displaystyle\sqrt{{{x}}}={4}$$ Equations and inequalities ANSWERED asked 2021-06-16 ### Solve $$\displaystyle\frac{{n}}{{5}}\le{1.6}$$ Equations and inequalities ANSWERED asked 2021-06-15 ### Use the Zero Product Property to solve the equation: $$\displaystyle{\left({x}+{5}\right)}{\left({x}+{8}\right)}={0}$$ Equations and inequalities ANSWERED asked 2021-06-13 ### Solve the equation: $$\displaystyle{x}^{{2}}-{5}{x}={18}+{2}{x}$$ Equations and inequalities ANSWERED asked 2021-06-13 ### A trust fund has$200,000 to invest. Three alternative investments have been identified, earning 10 percent, 7 percent, and 8 percent, respectively. A goal has been set to earn an annual income of \$16,000 on the total investment. One condition set by the trust is that the combined investment in alternatives 2 and 3 should be triple the amount invested in alternative 1. Determine the amount of money which should be invested in each option to satisfy the requirements of the trust fund.

Equations and inequalities

### Solve the equations and inequalities: $$\displaystyle{\frac{{{2}^{{x}}}}{{{3}}}}\leq{\frac{{{5}^{{x}}}}{{{4}}}}$$

Equations and inequalities

### Work each problem. Which of the following is equivalent to $$\ln(4x)-\ln(2x)$$ for $$x>0$$? A. $$2 \ln x$$. B. $$\ln 2x$$. C $$\frac{\ln4x}{\ln2x}$$. D. $$\ln2$$

Equations and inequalities

### If a number divided by -8 is 7. Find the number.

Equations and inequalities

### Solve the equation and check your solution. $$\displaystyle{\frac{{{20}-{2}{x}}}{{{7}}}}={\frac{{{4}{x}+{9}}}{{{8}}}}$$

Equations and inequalities