Mean 60 - 2(0.9) = 58.2
58.2 is 2 standard deviations from the mean.
171-55=x
x= 116
to get the answer plug in the numbers and to check the answer reverse do the problem
Answer:
90
Step-by-step explanation:
87 is closer to 90 than to 80, so it rounds to 90 when rounded to the nearest 10.
Answer:
D
Step-by-step explanation:
Using trigonometric ratios in the right triangle
tan45° = 1 and cos45° =
tan45° = =
Multiply both sides by 7
7 × tan45° = b, that is
b = 7 × 1 = 7
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cos45° = =
Multiply both sides by a
a × cos45° = 7, that is
a × = 7
Multiply both sides by
a = 7
Where is the shape or do you have a picture of it