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Rom4ik [11]
3 years ago
9

Have a free brainliesttttttttttttttttttt

Mathematics
1 answer:
lilavasa [31]3 years ago
7 0
Ok me pls thank you so much you are a heavenly angel
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Brian has reduced his cholesterol level by 8% after his last check up. If his original level was 200, what is his cholesterol le
s2008m [1.1K]

Answer:

B. 184

Step-by-step explanation:

A proportion is an easy way to solve this:

\frac{100\%}{200}  =  \frac{92\%}{x}  \\ 100x = 92(200) \\ x = 92(2) \\ x = 184

6 0
4 years ago
If Y varies directly with X, and Y = -5 and X = 7, what is X when Y = -85?
Tasya [4]

Answer:

X = 119

Step-by-step explanation:

Step 1: Given

Y = -5 X = 7

Y = -85 X = n

Step 2:

-85 ÷ -5 = 17

Step 3:

17 × 7 = 119

Answer:

Y = -5 X = 7

Y = -85 X = 119

n = 119

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3 years ago
A single tree produces about 2.6 × 102 lb of oxygen each year. The Amazon rainforest has about 3.9 × 1011 trees.
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(2.6 x 10² lb/tree) x (3.9 x 10¹¹ tree) = 1.014 x 10¹⁴ pounds .

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3 years ago
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C) 30m3

Step-by-step explanation:

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I belive its number one :)
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