 # Get help with algebra 2 equations and inequalities

Recent questions in Equations Gracie Steele 2023-02-05

### Prove that: $1+2+3+.........+n=\frac{n\left(n+1\right)}{2}$ i.e., the sum of the first n natural numbers is $\frac{n\left(n+1\right)}{2}$. bararskzs 2023-02-05

### Prove that $\frac{0.85×0.85×0.85+0.15×0.15×0.15}{0.85×0.85-0.85×0.15+0.15×0.15}=1$. Araceli Kidd 2023-01-04

### There are 86,400 seconds in a day. How many days long is a second?$A\right)1.157×{10}^{-6}$$B\right)1.234×{10}^{-5}$$C\right)1.157×{10}^{-5}$$D\right)1.432×{10}^{-4}$ Virginia Mendez 2023-01-01

### Two cogged wheels of which one has 32 cogs and other 54 cogs, work into each other. If the latter turns 80 times in three quarters of a minute, how often does the other turn in 8 seconds? A)24B)32C)54D)32E)48 Bradyn Mclean 2022-12-31

### What is the expanded form of $100$? Mason Cherry 2022-12-30

### The sum of two and seven divided by three' The given statement can be expressed mathematically as A. $7÷\left(2+3\right)$ B. $\left(2+7\right)÷3$ C. $2÷\left(7+3\right)$ yegumbi4q0 2022-12-29

### Use a direct proof to show that the product of two odd numbers is odd. Carina Nash 2022-12-28

### Simplify $\left(256{\right)}^{-12}$. A. $16$ B. $4$ C. $\frac{1}{16}$ D. $\frac{1}{4}$ Miranda Johns 2022-12-28

### Five years ago a man was seven times as old as his son. Five years hence, the father will be three times as old as his son. Find their present ages. acainzar3t2 2022-12-27

### What does $r$ mean in $Prn$? Kristin Montgomery 2022-12-27

### How many hours are there in 1500 minutes? A. 24 B. 25 C. 26 D. 27 John Noble 2022-12-26

### What number should be added to polynomial ${x}^{2}-5x+4$ so that 3 is the zero of polynomial? cvijecimaxym 2022-12-25

### Rs.10000 is invested at 5% interest rate p.a. Find the interest at the end of one year. bararskzs 2022-12-22

### Two cars leave simultaneously from points A and B, the distance between which is $280km$. If the cars move to meet each other, they’ll meet in $2$ hours. But if they move in the same direction, then the car going from point $A$ will catch up with the car going from point $B$ in $14$ hours. What is the speed of each of the cars? Delaney Escobar 2022-12-21

### What is the answer for $23$ whole square? y1i2de1o64w 2022-12-21

### The sum of $3$ consecutive odd numbers is $27$, how do you find the numbers? Leonard Valentine 2022-12-20

### Which pair of numbers has an LCM of 16? 4 and 16,2 and 4,3 and 16,4 and 8 Harper Burnett 2022-12-20

### math xmlns="http://www.w3.org/1998/Math/MathML"> Rewrite by rationalizing the denominator: 3 − 7 4 + 3 mishikizovw8 2022-12-20
### Which of the following is correct?A. $\left\{a\right\}\in \left\{a,b,c\right\}$B. $\left\{a\right\}\subseteq \left\{a,b,c\right\}$C. $\varphi \in \left\{a,b,c\right\}$D.None of these Leandro Acosta 2022-12-19