72 2.18 Siblings The histogram shows the distribution of the numbers of siblings (brothers and sisters) for 2000 adults surveyed in
the 2012 General Social Survey.
a. Describe the shape of the distribution.
b. What is the typical number of siblings, approximately?
c. About how many people in this survey have no siblings?
d. What percentage of the 2000 adults surveyed have no siblings?
400-
300
Frequency
200
100 -
0
2
4
6 8 10 12 14
Number of Siblings

Part a : solve -vp + 40 < 65 for v part b : solve 7w - 3r = 15 for r show your work .

How is working backward similar to solving an equation?

In δabc shown below, ∠bac is congruent to ∠bca: triangle abc, where angles a and c are congruent given: base ∠bac and ∠acb are congruent. prove: δabc is an isosceles triangle. when completed (fill in the blanks), the following paragraph proves that line segment ab is congruent to line segment bc making δabc an isosceles triangle. (4 points) construct a perpendicular bisector from point b to line segment ac . label the point of intersection between this perpendicular bisector and line segment ac as point d: m∠bda and m∠bdc is 90° by the definition of a perpendicular bisector. ∠bda is congruent to ∠bdc by the definition of congruent angles. line segment ad is congruent to line segment dc by by the definition of a perpendicular bisector. δbad is congruent to δbcd by the line segment ab is congruent to line segment bc because consequently, δabc is isosceles by definition of an isosceles triangle. 1. corresponding parts of congruent triangles are congruent (cpctc) 2. the definition of a perpendicular bisector 1. the definition of a perpendicular bisector 2. the definition of congruent angles 1. the definition of congruent angles 2. the definition of a perpendicular bisector 1. angle-side-angle (asa) postulate 2. corresponding parts of congruent triangles are congruent (cpctc)