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Questions in mathematics

[Free] Solve $6 x+8 \leq 20$ or $5+4 x \geq 33$

[Free] What are the solutions to the following system? $\begin{array}{l} -2 x^2+y=-5 \\ y=-3 x^2+5 \end{array}$ A. $(\sqrt{5},-10)$ and $(-\sqrt{5},-10)$ B. $(0,2)$ C. $(1,-2)$ D. $(\sqrt{2},-1)$ and $(-\sqrt{2},-1)$

[Free] Solve the following division problem: $349 lb 6 oz \div 130$ Select one of four: A. 4 lb 3 oz B. 6 lb 7 oz C. 3 lb 9 oz D. 2 lb 11 oz

[Free] Choose the improper fraction equivalent to the mixed number below. $9 \frac{4}{8}$ A. $\frac{77}{80}$ B. $\frac{76}{8}$ C. $\frac{75}{9}$ D. $\frac{75}{8}$

[Free] What are the domain and range of the function? | x | y | |---|--------| | 0 | 4 | | 1 | 5 | | 2 | 6.25 | | 3 | 7.8125 | A. The domain is the set of integers, and the range is [tex]$y \ge 4$[/tex]. B. The domain is the set of real numbers, and the range is [tex]$y \ge 0$[/tex]. C. The domain is the set of integers, and the range is [tex]$y > 4$[/tex]. D. The domain is the set of real numbers, and the range is [tex]$y > 4$[/tex].

[Free] Brianna solved a two-step equation, but she made a mistake along the way. $\begin{aligned} 0.1 x+3 & =1.7 \\ (-3)+0.1 x+3 & =1.7+(-3) \\ 0.1 x & =-1.3 \quad \text { Line } 1 \\ (-0.1)+0.1 x & =-1.3+(-0.1) \text { Line } 2 \\ x & =-1.4 \quad \text { Line } 4 \end{aligned}$ What mistake did Brianna make? A. On Line 1, Brianna should have subtracted 3 instead of adding -3. B. On Line 1, Brianna violated the addition property of equality. C. On Line 3, Brianna should have divided by 0.1 instead of subtracting 0.1. D. On Line 3, Brianna violated the addition property of equality.

[Free] Substituting $y=-2$ back into the first equation gives: $-2 x+\square=-12$

[Free] 2. 186 + 62 + 7 × 3 5. (100 - 50 × 4 + 2) + 3

[Free] Dimension of the lamp shade: Height = 31 cm Diameter = 200 mm The following formulae may be used: Circumference = π x diameter Area of a circle = π x Radius², where π = 3.142 Area of a rectangle = length x breadth Use the information above to answer the questions that follow. 4.1 Explain the term circumference in this context. 4.2 Calculate the circumference of the lamp shade in centimetres.

[Free] The oblique pyramid has a square base. An oblique pyramid has a square base with a base edge length of 2 centimeters. The vertical height of the pyramid is 3.75 centimeters. What is the volume of the pyramid? Options: 2.5 cm³ 3 cm³ 5 cm³ 6 cm³ 7.5 cm³