Questions in mathematics

Questions in mathematics

📝 Answered - What explains how some data values are expected to change based off the value of others? Select one answer option below. A. variables B. mean C. regression D. outliers E. I don't know this yet.

📝 Answered - What is the radius of a circle whose equation is $x^2+y^2-10 x+6 y+18=0$? A. 8 units B. 4 units C. 2 units D. 16 units

📝 Answered - Form a polynomial [tex]f(x)[/tex] with real coefficients having the given degree and zeros. Degree 4; zeros: 2-4i; 4 multiplicity 2 Let a represent the leading coefficient. The polynomial is [tex]f(x)=a[/tex] (Type an expression using [tex]x[/tex] as the variable. Use integers or fractions for any numbers in the expression. Simplify your answer.)

📝 Answered - 2. Regla de Tres 1. Un juez tarda 4 horas en revisar 12 expedientes. ¿Cuánto tarda para 46? $-\frac{4}{12}=\frac{x}{46} \Rightarrow$

📝 Answered - What is the maximum of [tex]f(x)=\sin (x)[/tex]? A. [tex]-2 \pi[/tex] B. -1 C. 1 D. [tex]2 \pi[/tex]

📝 Answered - Paul wants to go to a concert. The concert ticket costs $125. Paul earns $30 for each lawn he mows and $15 for each car he washes. Which inequality best represents the number of lawns he will have to mow and the number of cars he will have to wash in order to buy a concert ticket? $30l + 15w \geq 125

📝 Answered - At the end of a hockey season, a defenseman summarized his plus-minus total in a chart. For example, the first column shows that in five games during the season, his plus-minus total was +4. His plus-minus total for those 5 games was +20. | No. of games | 5 | 13 | 8 | 6 | 12 | 2 | 17 | 9 | | :------------ | :- | :- | :- | :- | :- | :- | :- | :- | | plus-minus total | +4 | +3 | +2 | +1 | 0 | -1 | -2 | -3 | Write an expression that will determine the defenseman's plus-minus total for all the games played during the season. What is his plus-minus total for the entire season? Write an expression that will determine the plus-minus total for the season. Choose the correct answer below. A. $(+4)-(+3)-(+2)-(+1)-(0)-(-1)-(-2)-(-3)$ B. $5(+4)-13(+3)-8(+2)-6(+1)-12(0)-2(-1)-17(-2)-9(-3)$ C. $(+4)+(+3)+(+2)+(+1)+(0)+(-1)+(-2)+(-3)$ D. $5(+4)+13(+3)+8(+2)+6(+1)+12(0)+2(-1)+17(-2)+9(-3)$ The defenseman's season plus-minus total is $\square$.

📝 Answered - A tank leaks water at a constant rate. After 3 hours it has 280L, and after 7 hours, 120L. Find the original amount and rate of leakage.

📝 Answered - Which equation represents a rotation of the equation $y=4 x+3$? A. $y=3 x+2$ B. $y=-3 x-3$ C. $y=4 x+3$ D. $y=3 x+3$

📝 Answered - A coin collector has $25 in nickels and dimes. There are three times as many nickels as there are dimes. How many of each coin are there? (A) 125 dimes and 300 nickels (B) 100 dimes and 300 nickels (C) 300 dimes and 100 nickels (D) 150 dimes and 150 nickels