Elena used math facts as an anchor to find the sum of 5 and 7. Her work is shown.

Step 1: The phrase "sum of” means addition.
Step 2: 5 + 5 = 10
Step 3: Since 7 is 2 more than 5, 2 more need to be added to 10.
Step 4: Therefore, 5 + 7 = 8.

sasaasasa

step-by-step explanation:

sasasdfubisdbjvkzc

most likely linear (proportionate)

step-by-step explanation:

as time increases heart rate increases

part a: triangles gcb and epb

part b. sides cg and rp are parallel by definition of parallelogram.

angles cgb and e are congruent by being alternate interior angles of parallel lines cut by a transversal. angles gbc and ebp are congruent because they are vertical angles. by aa similarity, the triangles are similar.

part c. since the triangles are similar, the ratios of the lengths of corresponding sides are equal.

calculation of be:

gb/be = cb/bp

(400 ft)/be = 300/200

(400 ft)/be = 3/2

3be = 2 * 400 ft

3be = 800 ft

be = 800/3 ft

calculation of pe:

gc/pe = cb/bp

(350 ft)/pe = 300/200

(350 ft)/pe = 3/2

3pe = 2 * 350 ft

3pe = 700 ft

pe = 700/3 ft