Questions in mathematics

Questions in mathematics

📝 Answered - Solve the polynomial equation in the complex numbers. [tex]12 x^4-40 x^3+23 x^2-x-1=0[/tex] Find the complex zeros of [tex]f[/tex]. [tex]x=[/tex] _ (Type an exact answer, using radicals as needed. Express complex numbers in terms of [tex]i[/tex]. Use a comma to separate answers as needed.)

📝 Answered - A frequency histogram is to be drawn using the information given in the frequency table below: | Science Score | Frequency | | :------------ | :-------- | | 5 | 2 | | 15 | 5 | | 25 | 10 | | 45 | 15 | | 55 | 8 | (a) What word(s) will you use to label the horizontal axis? Answer: (b) What word(s) will you use to label the vertical axis? Answer: (c) What number corresponds to the height of the highest column? Answer: (d) What number corresponds to the height of the lowest column?

📝 Answered - Robin paid $120 a month on a credit card. She was late on a payment, so her monthly bill was raised to $150 a month. Which of these shows how Robin can calculate the percent increase she was charged? A. $(150-120) / 120$ B. $150-120$ C. $150+120$ D. $(150+120) / 120

📝 Answered - Multiply (7y) [tex] \left(-3 y^2\right) [/tex] A. [tex] -73 y^3 [/tex] B. [tex] 63 y^3 [/tex] C. [tex] -21 y^3 [/tex] D. [tex] 4 y^2 [/tex]

📝 Answered - Which value is a solution of [tex]\frac{7}{4} x^2-2=-05 x+4[/tex]? A. [tex]x=-2[/tex] B. [tex]x=-1[/tex] C. [tex]x=1[/tex] D. [tex]x=5[/tex]

📝 Answered - An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

📝 Answered - \frac{3}{8} \times 4,000=

📝 Answered - Solve the following inequality: [tex]7 \leq 9 x-1.6\left(6 x^{\star}-4\right)[/tex]

📝 Answered - Which linear equation can be derived from this proportion? $\frac{12}{5+8}=\frac{7}{5+1}$ A. $12 x+96=7 x+7$ B. $12 x+1=7 x+8$ C. $12 x+12=7 x+56$ D. $12 x+8=7 x+1$

📝 Answered - The area of a circle is a function equal to the product of pi ([tex]$\pi$[/tex]) and the square of the radius ([tex]$r$[/tex]). Which of the following shows this function? A. [tex]$f(r)=\pi r^2$[/tex] B. [tex]$f(r)=2 \pi r$[/tex] C. [tex]$f(r)=2 \pi+2 r^2$[/tex] D. [tex]$f(r)=\pi^2-r^2$[/tex]