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SVETLANKA909090 [29]
3 years ago
8

Brian has reduced his cholesterol level by 6% by following a strict diet and regular exercise. If his original level was 280, wh

at is his approximate cholesterol level now?
A. 17
B. 278
C. 263
D. 297
Mathematics
2 answers:
SashulF [63]3 years ago
6 0
The answer is c 263 I hope this helps
daser333 [38]3 years ago
3 0

Answer:

Maybe C?

Step-by-step explanation:

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during a test of a totalizing flow meter, the water depth rose 15 inches in a tank 18 inches in diameter. What was the total flo
sattari [20]

Answer:

The total flow in gallons is approximately 16.524 gallons

Step-by-step explanation:

The given diameter of the tank, D = 18 inches

The amount by which the water depth rose, Δh = 15 inches

The quantity being measured = The total flow = The change in volume of water in the tank

The change in the volume of the water in the tank, ΔV = (π × D²/4) × Δh

Substituting the known values, gives;

ΔV = (π × D²/4) × Δh = (π × (18 in.)²/4) × (15 in.) ≈ 3817.035 in.³

1 gallon = 231 in.³

ΔV ≈ 3817.035 in.³ = 3817.035 in.³ × 1 gallon/(231 in.³)  ≈ 16.524 gallons

The change in the volume of the water in the tank, ΔV in gallons = The total flow in gallons ≈ 16.524 gallons.

4 0
3 years ago
A cylindrical container 30cm in diameter holds approximately 30 litres of oil. how far does the oil level fall after 1 litre of
LenaWriter [7]

The fall in the level of oil is <u>1.4147 cm</u> when the total volume of oil consumed is 1 liter.

We assume the drop in the level of water to be d cm.

Since the container is cylindrical in shape, its volume is given as:

V = πr²h, where V is the volume, r is the radius, and h is the height.

In the question, we are given that the diameter of the can is 30 cm.

Hence its radius = 30/2 = 15 cm.

The capacity of the container is given to be 30 liters or 30*1000 = 30000 cm³.

The volume of the oil used = 1 liter or 1*1000 = 1000 cm³.

Thus, substituting V = 1000, r = 15, and h = d, in the formula of the volume, V = πr²h, we get:

1000 = π(15)²(d),

or, d = 1000/(225π) = 1.4147.

Thus, the fall in the water level is 1.4147 cm.

Therefore, the fall in the level of oil is <u>1.4147 cm</u> when the total volume of oil consumed is 1 liter.

Learn more about the volumes of cylinders at

brainly.com/question/9554871

#SPJ4

4 0
2 years ago
Select the correct answer from each drop-down menu.<br> please help
leonid [27]

Answer:

not a fuction

Step-by-step explanation: this line can not pass the line test  

5 0
3 years ago
Read 2 more answers
Evaluate functions!!!
gladu [14]

Answer:

-1

Step-by-step explanation:

y = 14 -0.5x

y= 14 -0.5(30)

y= 14 - 15

y= -1

7 0
4 years ago
Please someone help me giving brainliest :)
worty [1.4K]
Answer 4

6 goes into 24 4 times and since both the top and bottom are negative the answer is positive
7 0
3 years ago
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