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Questions in mathematics

[Done] 1. What number comes next in the pattern? 2, 6, 12, 20, 30, 42 a) 36 b) 40 c) 42 d) 44 2. Which is the odd one out? a) 121 b) 144 c) 169 d) 152 3. Which one is not a shape? a) Circle b) Triangle c) Square d) Spoon 4. Which letter comes next? Z, X, V, T, Y a) Q b) R c) S d) P

[Done] Add. Answer as a mixed number in lowest terms. 8 1/2 + 5 3/8 First, enter the whole number.

[Done] Calculate: (-4 × 10^5)(-2 × 10^-6) Write your answer in scientific notation.

[Done] (x - 8) - 5(y + 6) = 130 (x - 8) + 5(y + 6) = 435 The solution to the given system of equations is (x, y). What is the value of 4(x - 8)?

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

[Done] Solve by factoring or finding square roots. [tex]x^2+2 x+1=0[/tex]

[Done] Holly and Tamar completed the work in the table to determine if a triangle with side lengths of 40, 42, and 58 is a right triangle. | | | | :---------- | :---------- | | Holly's Work | Tamar's Work | | [$\begin{array}{l}(40+42)^2=58^2 \\ 82^2=3,364 \\ 6,724 \approx 3,364\end{array}$] | [$\begin{array}{l}42^2+40^2=58^2 \\ 1,764+1,600=3,364 \\ 3,364=3,364\end{array}$] | | The triangle is not a right triangle. | The triangle is a right triangle. |

[Done] $\frac{11-x}{(2 x-1)(x+3)}$

[Done] The product of a binomial and a trinomial is $x^3+3 x^2-x+2 x^2+6 x-2$. Which expression is equivalent to this product after it has been fully simplified? A. $x^3+5 x^2+5 x-2$ B. $x^3+2 x^2+8 x-2$ C. $x^3+11 x^2-2$ D. $x^3+10 x^2-2$

[Done] Graph the exponential model $y=2(0.5)^x$. Which point lies on the graph? (0,2) (2,5) (-4,1) (1,-1)