# College math questions and answers

Recent questions in Post Secondary

### Data that can be sorted into distinct groups is called quantitative 1. True 2.False

Aneeka Hunt 2020-12-15 Answered

### Find the solution of the following differential equation by Laplace transforms: $$y'''- 5y" + 7y’-3y =20\sin(t) , y(0)=y'(0)=0 , y"(0)=-2$$

Tammy Todd 2020-12-15 Answered

### The confidence interval for the mean population is $$2.5121 < \mu < 2.6879.$$

Cheyanne Leigh 2020-12-15 Answered

### Solve. $$\displaystyle\int\frac{{{78}{x}}}{{{25}-{12}{x}+{4}{x}^{2}}}$$

Elleanor Mckenzie 2020-12-15 Answered

### In each of the following, identify the variables are categorical nominal, or categorical ordinal, or numerical discrete or numerical continuous. 1.Political affiliation of a voter

Ayaana Buck 2020-12-15 Answered

### A chi-square value of 6.15 is calculated from data in a $$4x5$$ contingency table. Assuming $$\alpha=0.05$$, identify the critical value. 26.217 31.410 21.026 16.919

Cheyanne Leigh 2020-12-14 Answered

### Let R and S be commutative rings. Prove that (a, b) is a zero-divisor in $$\displaystyle{R}\oplus{S}$$ if and only if a or b is a zero-divisor or exactly one of a or b is 0.

Chaya Galloway 2020-12-14 Answered