Me. answer each letters and explain how you get the answerdetermined the number of girls and boys in each class. a) there are 20 children in a class. 2/5 are boysb) there are 42 children. 3/7 are girls c) there are 15 children. the ratio of girls to boys is 3: 2d) there are 24 children. the ratio of girls to boys is 3: 5

How many zeros does the function f(x)=4x3-x2+1 have

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.