Counting up -4 is the same as the opposite of counting up 4 and also means counting down 4. a. For each example above, what is the distance between 2 and the sum

b. Does the sum lie to the right or left of 2 on a horizontal number line? Above or below on a vertical number
line?

C. Given the expression 54 + 81, determine, without finding the sum, the distance between 54 and the sum.
Explain

Use the following statements to write a compound statement for the conjunction or disjunction. then find its truth value. p: an isosceles triangle has two congruent sides. q: a right angle measures 90° r: four points are always coplanar. s: a decagon has 12 sides. a) a right angle measures 90° or an isosceles triangle has two congruent sides; true. b) a right angle measures 90° and an isosceles triangle has two congruent sides; true. c) a right angle measures 90° and an isosceles triangle does not have two congruent sides; false. d) a right angle measures 90° or an isosceles triangle does not have two congruent sides; true.