Answer:
QT < TR.
Step-by-step explanation:
QT = TR because TZ is a mid segment so QT < TR is false.
Answer:
A) 
B) T = -5 °C
Step-by-step explanation:
A) Let T be the change in temperature of the week. T is determined as the total temperature change (-20°C) divided by the number of weeks that have passed (4 weeks). The expression is:

B) In order to simplify the expression, simply perform the division.

This means that the temperature has dropped by 5 degrees each week.
Answer:
B: 210
C: 450
Step-by-step explanation:
You just need to multiply the two numbers overlapping in the box. For B, the two numbers for that box are 30 and 7, therefore you must multiply them together to get 210. For C, the numbers are 90 and 5, when multiplied equals 450. Hope that helps!
A) 8/40 = 1/5
b) 12/40 or 6/20
c) 26/40 or 13/20
Answer:
-8
Step-by-step explanation:
took the test