Numerade

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Observations are drawn from a bell-shaped distribution with a mean of 25 and a standard deviation of 4. Approximately what percentage of the observations fall between 21 and 29? Note: Round your answer to the nearest whole percent.

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Quantify the sizes represented below and identify the smallest distance. A) 1 light-second B 1 AU C) diameter of a typical planet D) diameter of a typical star

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Spec 51: In the reaction: 2 K(s) + Ca$^{2+}$(aq) \rightarrow 2 K$^{+}$(aq) + Ca(s) which chemical is: oxidized? K (potassium) reduced? Calcium Ca the oxidizing agent? +1 to K electron the reducing agent? -2 to Ca electrons

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Evolution Pathways that transform energy and matter Relationship of structure to function Interactions within biological systems Information flow There is more oxygen gas in the air of our lungs than in the blood. Therefore, oxygen moves by passive transport from the air into the bloodstream. The region of an enzyme called the active site has the shape and chemistry that fits one specific substrate molecule ATP energizes other molecules in cells by transferring phosphate groups to those molecules. Because all cells have a plasma membrane, it is logical to infer that membranes first developed in the earlyest forms of life on Earth.

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(9) Given $A = \begin{bmatrix} 2 & 0 \\ 0 & 2 \end{bmatrix}$ and $B = \begin{bmatrix} 1 & 1 \\ 0 & 1 \end{bmatrix}$, then $(AB)^{-1} = (AB)^{-1} = B^{-1}A^{-1}$

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An object floats in water with \% of its volume submerged. What is the ratio of the density of the object to that of water? 1/4 3/4 1/2 1/3

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A right circular cylinder has a height of $19\frac{3}{4}$ ft and a diameter $1\frac{2}{5}$ times its height. What is the volume of the cylinder? Enter your answer as a decimal in the box. Use 3.14 for pi and round only your final answer to the nearest hundredth.

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14. Odd numbers end in A. 1, 3, 5, 7, or 9 B. 0, 2, 4, 6, or 8 C. zero only D. any number 15. Which number can be shared on two equal groups with no remainder? A. 85 B. 490 C. 223 D. 517 16. Which of these equations is NOT a member of the fact family 6, 4, 24 A. $4 \times 6 = 24$ B. $24 - 6 = 4$ C. $24 \div 4 = 6$ D. $24 = 6 \times 4$

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7. Simplify each of the following using the index laws. a. $g^3 \times 2g^5$ b. $2p^6 \times 4p^2$ c. $(w^3)^6$ d. $12x^6 \div 2x$ e. $(2d^3)^2$ f. $5a^6 \times 3a^2 \times a^2$ g. $15s^8 \div 5s^2$ h. $4bc^6 \times 3b^3 \times 5c^2$ i. $\frac{14x^8}{7x^4}$ j. $(f^4g^3)^2$ k. $\frac{16u^6v^5}{6u^3v}$

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The age of 10 of the teachers at Kennedy are: 42, 23, 27, 32, 27, 53, 32, 24, 25, 27. Find the mean, median, mode and range of the ages. Explain how you found them.

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ashley m.