Answer:
∠1 = 66°
∠2 = 24°
∠3 = 24°
∠4 = 90°
Step-by-step explanation:
∠1 = 90 - 24 = 66°
∠2 = 24°
∠3 = 24° because segment DB bisects ∠ABC
∠4 = 90° because it is a right angle
Answer:
45
Step-by-step explanation:
this should be correct :)
There are 9 in the 100's
108
117
126
135
144
153
162
171
180
There are 8 in the 200's (starting to see a pattern?)
207
216
225
234
243
252
261
270
There are 7 in the 300's
306
315
324
333
342
351
360
9+8+7+6+5+4+3+2+1 = 45
Answer:
x = -7, y = -9
Step-by-step explanation:
The coefficient (the number before) the y is the same but the signs are opposite so add the equations together:
x-3x+y-y=-16+30
-2x=14
x=-7
y=-16-x=-16--7=-9
Step-by-step explanation:
Mathematical explanations are explanations in which mathematics plays a crucial role. There is a rich historical tradition of debates about mathematical explanation, dating back to Aristotle. One central strand of this tradition considers the significance of explanatory goals for pure mathematics.
