Answer: 20.6
Step-by-step explanation:
Answer:
D. 80x + 70 = 390
Step-by-step explanation:
80 times x (the degrees it heats up per minute times the number of minutes) + 70 (the degrees the oven was already at) = 390 (the number of degrees the oven needs to preheat to.)
This is the only answer that makes sense.
Hope this helps! :D
Also, where can I buy an oven that heats up this fast? XD
I don't remember the names of the theorems at all, but we know that AD ≈ DE ≈ EB (Segment Addition). Which means <ACD ≈ <DCE ≈ <ECB (not completely sure how to prove this). Therefore, <1 ≈ <2. (Don't forget to state that <1 ≈ <ACD and <2 ≈ <ECB). With this and Angle Addition, we know that <ACE ≈ <DCB, so with SAS Congruence Theorem, we can prove ΔACE ≈ ΔBCD.
Hope that helps
