Questions in mathematics

Questions in mathematics

📝 Answered - Is -34 × -35 positive or negative?

📝 Answered - Which system has no solution? $\begin{array}{c||c||c||c} y=-3 x+8, & y=9 x+6.25 & y=4.5 x-5 & y=3 x+9 \\6 x+2 y=-4.5 & -18 x+2 y=12.5 & -3 x+2 y=6 & x+8 y=12.3\end{array}$

📝 Answered - A manager at a retail store was interested in the spending habits of customers during the holiday season. The manager surveyed a random group of customers and recorded the number of items that they bought, and the total amount of money they spent at the store. The table displays the information collected on the customers. | Number of Items | 1 | 5 | 3 | 8 | 7 | 4 | 3 | 1 | 6 | 8 | 4 | 8 | | :---------------- | :- | :- | :- | :- | :- | :- | :- | :- | :- | :- | :- | :- | | Amount Spent (in dollars) | 22 | 92 | 57 | 470 | 204 | 102 | 81 | 85 | 152 | 780 | 52 | 455 | Part A: Would a scatter plot or line graph be more appropriate for displaying and describing this set of data? Explain. Part B: Determine whether the association is linear or nonlinear, strong or weak, and positive or negative and use it to describe the relationship between the number of items purchased and the total amount of money spent.

📝 Answered - Find the interest and amount when GH₵400.00 is saved for 3 years at 6%.

📝 Answered - Use integration by parts to evaluate the integral: [tex]$\int \ln (5 s-9) d s$[/tex]

📝 Answered - For which value of $a$ are the graphs of $-4=3 x+6 y$ and $a x-8 y=12$ parallel? A. $a=-4$ B. $a=-\frac{1}{2}$ C. $a=\frac{1}{4}$ D. $a=2

📝 Answered - Fill in the gap to factorise this expression: [tex]10 x+15=-(2 x+3)[/tex]

📝 Answered - Express $\prod_1^{\frac{19}{20}}$ as

📝 Answered - Solve $x-5 \sqrt{x}+4=0$

📝 Answered - An upholsterer cuts a $1 \frac{2}{3}$ foot piece of cording from a piece that is $2 \frac{1}{4}$ feet long. How much cording is left? A $\frac{7}{12} ft$ B $1 \frac{5}{12} ft$ C $1 \frac{7}{12} ft$ D $3 \frac{11}{12} ft