4 The number of sweatshirts a vendor sells daily has the following probability distribution.
Number of Sweatshirts x
P(x)
0 1 2 3 4 5
0.3 0.2 0.3 0.1 0.08 0.02
If each sweatshirt sells for $25, what is the
expected daily total dollar amount taken in by the
vendor from the sale of sweatshirts?

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels

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.

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2