Answer:
7: 100
8: 40
9: 74
Step-by-step explanation:
Just subtitute 5 as x in the equation given for f.
2(5)+8=18.
X = 45.
Since opposite exterior angles are congruent, you can set the 2 values equal to each other. When you solve for x, you should get 45.
Answer:
by adding the circle of area below the doorknob and removing the surface area of the knob itself
Step-by-step explanation:
Writing the equation that governs this situation:
-3C - (2.5C/hr)x = -18C
Simplifying, -3 - 2.5x = -18, or 3 + 2.5x = 18
Combining like terms: 2.5x = 18-3 = 15
Then x = 15/2.5 = 6. The temp. will reach -18C after 6 hours.
