Answer:
.75 mg
Step-by-step explanation:
.25 * 3 = .75 mg
Answer:
b.
Step-by-step explanation:
The 90% confidence interval is (70 - 4, 70 + 4). The margin of error is 4%.
Answer:
x = 26, y = 9
Step-by-step explanation:
Add the bottom equations and set them equal to 180
8x -28 = 180
8x = 208 divide each by 8
x = 26
Find the bottom right, 3(26) - 11
78 - 11 = 67
The unlabeled top left box is also equal to 67 degrees.
So 2y + 5 = 23
2y = 18
y = 9