HRS - Ask. Learn. Share Knowledge. Logo

Questions in mathematics

[Done] The students will be asked to draw a given triangle: AB = 10 cm ∠CAB = 55° ∠CBA = 40°

[Done] Write the numbers given below which have only straight lines: 5 8 7 1 9 0 2 4

[Done] 1. In a spelling contest, the number of words correctly spelled by 8 students are: 10, 12, 10, 14, 12, 10, 11, 12. What is the mode of the number of correct words? 2. A store recorded the number of shirts sold over five days: 25, 30, 25, 40, 25. What is the mode of the shirts sold? 3. The shoe sizes of students in a classroom are: 7, 8, 9, 8, 7, 8, 10, 7, 8. What is the mode shoe size? 4. A farmer recorded the number of eggs collected from 6 hens over a week: 6, 5, 5, 6, 4, 6. What is the mode number of eggs? 5. In a survey, students were asked how many hours they sleep at night. Their responses were: 7, 6, 7, 8, 7, 6, 9, 6, 6. What is the mode of the number of sleeping hours?

[Done] Factor. $x^2+12 x+35$ A. $(x+7)(x-5)$ B. $(x-7)(x-5)$ C. $(x+5)(x-7)$ D. $(x+5)(x+7)$

[Done] Write the monomial in standard form: [tex]$9 y y^2 y$[/tex]

[Done] If [tex]$s(x)=2-x^2$[/tex] and [tex]$t(x)=3 x$[/tex], which value is equivalent to [tex]$(s \circ t)(-7)$[/tex]? A. -439 B. -141 C. 153 D. 443

[Done] Consider a circle whose equation is $x^2+y^2+4 x-6 y-36=0$. Which statements are true? Check all that apply. A. To begin converting the equation to standard form, subtract 36 from both sides. B. To complete the square for the $x$ terms, add 4 to both sides. C. The center of the circle is at $(-2,3)$. D. The center of the circle is at $(4,-6)$. E. The radius of the circle is 6 units. F. The radius of the circle is 49 units.

[Done] A weight attached to a spring is at its lowest point, 9 inches below equilibrium, at time $t=0$ seconds. When the weight it released, it oscillates and returns to its original position at $t=3$ seconds. Which of the following equations models the distance, $d$, of the weight from its equilibrium after $t$ seconds? $d=-9 \cos \left(\frac{\pi}{3} t\right)$ $d=-9 \cos \left(\frac{2 \pi}{3} t\right)$ $d=-3 \cos \left(\frac{\pi}{9} t\right)$ $d=-3 \cos \left(\frac{2 \pi}{9} t\right)$

[Done] Which function is a quadratic function? $y-3 x^2=3\left(x^2+5\right)+1$ $y^2-7 x=2\left(x^2+6\right)+7$ $y-2 x^2=6\left(x^3+5\right)-4$ $y-5 x=4(x+5)+9$

[Done] Use the elimination method to solve the system of equations. Choose the correct ordered pair. [tex]\begin{array}{l} 7 x+3 y=30 \\ -2 x+3 y=3 \end{array}[/tex] A. (3,3) B. (3,5) C. (6,5) D. (6,3)