Answer:the number of BlackBerry that Arlene had initially was 276
Step-by-step explanation:
Let x represent the number of BlackBerry that Arlene had initially.
She gave 216 to her teachers. This means that she is left with x - 216
Then she dropped 12. This means that she would be left with x - 216 - 12 = x - 228
Later, she ate 18. This means that she would be left with x - 228 - 18 = x - 246
Finally, she gave half of what she had to her friend. This means that the amount that she gave to her friend is (x - 246)/2 and the amount that she has left would be
(x - 246)/2
Now, she has 15. This means that
(x - 246)/2 = 15
x - 246 = 2 × 15 = 30
x = 30 + 246 = 276
Answer: C
Step-by-step explanation:
1.2x-10=0.2x+14
subtract 0.2x
1.0x-10=14
add 10
x=24
#17: is 6
#18: is 30
#19: is 3.75
Answer:
$345
Step-by-step explanation:
Take $442 and subtract it to $29 and $68 to get $345.
The answer is "Connect two arcs together with a compass".
You can inscribe different regular polygons by creating a circle and connecting two arcs together. There are different procedures and they depends on what kind of regular polygon you will be creating.
