Questions in mathematics

Questions in mathematics

📝 Answered - How much pure gold should be added to a 4-ounce alloy that is presently 20% gold to make it 55% gold? Round your answer to two decimal places. A. 3.36-ounce B. 3.11-ounce C. 2.20-ounce D. 1.65-ounce E. 1.40-ounce

📝 Answered - If 1=5, 2=10, what is 9?

📝 Answered - Raphael graphed the functions [tex]g(x)=x+2[/tex] and [tex]f(x)=x-1[/tex]. How many units below the [tex]y[/tex]-intercept of [tex]g(x)[/tex] is the [tex]y[/tex] intercept of [tex]f(x)[/tex]?

📝 Answered - Which equations represent the line that is parallel to [tex]$3 x-4 y=7$[/tex] and passes through the point [tex]$(-4,-2)$[/tex]? Select two options. [tex]$y=\frac{-3}{4} x+1$[/tex] [tex]$3 x-4 y=-4$[/tex] [tex]$4 x-3 y=-3$[/tex] [tex]$y-2=\frac{3}{4}(x-4)$[/tex] [tex]$y+2=\frac{3}{4}(x+4)$[/tex]

📝 Answered - Which set of coordinates satisfies the equations $3x - 2y = 15$ and $4x - y = 20$? A. $(2, -7)$ B. $(1, -6)$ C. $(5, 0)$ D. $(0, -7.5)$

📝 Answered - Use synthetic division to find the quotient and remainder. $\frac{3 x^3+2 x-5}{x-1}$ quotient $\square$ remainder $\square$

📝 Answered - Solve: [tex]$\sqrt{x+3}=\sqrt{2 x-3}$[/tex]

📝 Answered - The law of cosines is used to find the measure of $\angle 2$. $\begin{array}{l}<>16^2=18^2+19^2-2(18)(19) \cos (Z) \\ 256=324+361-(684) \cos (Z) \\ 256=685-(684) \cos (Z)<>\end{array}$ To the nearest whole degree, what is the measure of $\angle Z$? A. $41^{\circ}$ B. $47^{\circ}$ C. $51^{\circ}$ D. $57^{\circ}

📝 Answered - Type the correct answer in each box. There are three letter tiles—A, B, and C—in a bag, and there are three number tiles—1, 2, and 3—in another bag. Alexis picks a letter tile, and she picks a number tile. Complete the table representing the sample space for this situation. Letter Tile A B C Number Tile 1 A-1 B-1 C-1 2 A-2 C-2 3 A-3 B-3 The sample size of the event is .

📝 Answered - Select the correct answer. Bailey has a video streaming service with a flat monthly fee of $18.00 plus an additional cost of $3.50 for each premium movie rental. Bailey can only afford a maximum monthly bill of $40.00. Which inequality can be used to solve for x, the number of premium movie rentals she can purchase in a month? A. $18.00x + 3.50 \leq 40.00$ B. $18.00x + 3.50 \geq 40.00$ C. $3.50x + 18.00 \leq 40.00$ D. $3.50x + 18.00 \geq 40.00