Question 3 3.1. Compare the fractions \( \frac{3}{7} \) and \( \frac{4}{9} \) by using the area model. Justify your response with accurate drawings. 3.2. Explain how you would teach your learners to use the method of compensation to calculate \( 558+79 \). 3.3. Explain how you would teach your learners to use the method of compensation to subtract \( 365-28 \). Question 4

Пряма AS перпендикулярна до площини прямокутника \( \boldsymbol{A B C D} \). Знайди SA, якщо SD \( =20 \mathrm{~cm}, \mathbf{S C}=24 \mathrm{~cm}, \mathbf{S B}=15 \mathrm{~cm} \)

184 La figura ha l'area di \( 320 \mathrm{~cm}^{2} \) \( \square \)

Felipe is collecting data comparing air conditioning costs to the daily outdoor temperature during the summer of 2004 . When Felipe draws his scatterplot, which variable should be used as the dependent variable? outdoor temperature air conditioning costs date indoor temperature

A scientist discovered a new element that has two naturally occurring isotopes. The first isotope has a mass of 12.2959 amu and the second isotope has a mass of 15.9921 amu. If the element has an atomic mass of 13.9362 amu , what is the percent abundance of each isotope? a. [4 pts] The general equation to calculate the atomic mass of the element is b. [6 pts] The percentage abundance of the first isotope is is pts] The percentage abundance of the second isotope is

Factor if possible. Check the answer by multiplying. \[ y^{2}+81 \]