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Questions in mathematics

[Jawaban] A while back, either James borrowed $12 from his friend Rita or she borrowed $12 from him, but he can't quite remember which. Either way, he is planning to pay her back or ask that she pay him back this afternoon. If he has $42.80 in his wallet, which equation represents the amount of money he may have after he sees Rita? $|x-42.80|=12$ $|x+42.80|=12$ $|x-12|=42.80$ $|x+12|=42.80$

[Jawaban] Which of the following functions is not quadratic? [tex]$f(x)=2 x^2+5 x-1$[/tex] [tex]$f^{\prime}(x)=-3 x^2-1$[/tex] [tex]$f(x)=5 x-5$[/tex] [tex]$f^{\prime}(x)=x^2$[/tex]

[Jawaban] What are the domain and range of [tex]f(x)=\log (x+6)-4[/tex]? A. domain: [tex]x>-6[/tex]; range: [tex]y>4[/tex] B. domain: [tex]x>-6[/tex]; range: all real numbers C. domain: [tex]x>6[/tex]; range: [tex]y>-4[/tex] D. domain: [tex]x>6[/tex]; range: all real numbers

[Jawaban] Evaluate the limit $\lim _{x \rightarrow \infty} \frac{8 x+2}{2 x^2-5 x+9}$

[Jawaban] Your classmate wonders how we get the constant of x^2 + 10x to make it a perfect square trinomial. What is the correct response? A. Divide 10 by 2. B. Square the quotient of 10 and 2. C. Half the quotient of 10 and 2. D. Twice the quotient of 10 and 2.

[Jawaban] During a math test, four students got the following scores: 75, 80, 90, and 85. What is the median test score?

[Jawaban] Directions: Please write this problem in one whole sheet of paper. Answer the following problems using the 7 steps in solving word problems. Problem #1 Title: Lunchtime Clock Problem: Emily's lunch break starts at 12:00 PM. She returns to class at 12:45 PM. What time does her lunch break start and end in 24-hour format? Problem #2 Title: Movie Time Problem: A movie starts at 3:30 PM and ends at 6:00 PM. What is the start and end time of the movie in 24-hour format? How long is the movie? Problem #3 Title: Travel Schedule Problem: Jamal's train departs at 7:15 AM and arrives in another city at 2:50 PM. What is the departure and arrival time in 24-hour format? How long is the train ride?

[Jawaban] Write the numbers in standard form. Write the face value and value of the digit in the thousands place. A. 468,991 B. 979,543 C. 64,835 D. 90,374 E. 985,105 Write the greatest and the smallest 6-digit numbers using the digits 2, 4, 6, 8, 5, and 3. Do not repeat any digit.

[Jawaban] What is the solution to the system of equations? $\left\{\begin{array}{r} -3 x-3 y+2 z=-7 \\ z=1 \\ -2 x-3 y+z=-6 \end{array}\right.$ A. $(2,1,1)$ B. $(2,1,-1)$ C. $(-2,1,1)$ D. $(2,-1,1)$

[Jawaban] Simplify the following using the properties of whole numbers: (a) $113 \times 25 \times 4$ (b) $400 \times 37-400 \times 7$ (c) $300+195+5$ (d) $12 \times 202$