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anzhelika [568]
3 years ago
8

Your bathroom scale sits on a ramp making an angle of 20 degrees with the (perfectly horizontal) ground. When you stand on the s

cale, will the weight it reports be higher than your actual weight, lower than your actual weight, or correct?

Mathematics
1 answer:
lord [1]3 years ago
6 0

Answer:

Step-by-step explanation:

If the bathroom scale make an angle of 20°

Then, we need to resolve it to the vertical axis

W=mg

Then weight on the vertical axis is

W=W•Cos20

Since cos20 is less than 1

The weight is lower than it's actual weight because the weight that will be recorded on the scale is the normal weight and which is

N=W•Cos20

N=0.94W

%reduction = (actual weight-measure weight)/actual weight ×100

%reduction= (W-0.94W)/W × 100

%reduction=0.06W/W× 100

℅reduction =6%

It will be reduce by 6% of his original weight

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A company has a policy of retiring company cars; this policy looks at number of miles driven, purpose of trips, style of car and
vredina [299]

Answer:

2.35%

Step-by-step explanation:

Mean number of months (M) = 39 months

Standard deviation (S) = 10 months

According to the 68-95-99.7 rule, 95% of the data is comprised within two standard deviations of the mean (39-20 to 39+20 months), while 99.7% of the data is comprised within two standard deviations of the mean (39-30 to 39+30 months).

Therefore, the percentage of cars still in service from 59 to 69 months is:

P_{59\ to\ 69}=\frac{P_{9\ to\ 69}-P_{19\ to\ 59}}{2} \\P_{59\ to\ 69}=\frac{99.7-95}{2}\\P_{59\ to\ 69}=2.35\%

The approximate percentage of cars that remain in service between 59 and 69 months is 2.35%.

8 0
3 years ago
Evaluate each expression please
Firlakuza [10]
13. Is 18 15. Is 86 17 is 5 19 is 15 21 is 24 23 is 29
5 0
3 years ago
When 5 is subtracted from the square of a number, the result is 4 times the number. Find the negative solution.
wariber [46]

Answer:

-1

Step-by-step explanation:

You can write it as...

x^{2} -5=4x

Carry the 4x

x^{2} -4x-5=0

Then use the quadratic formula to solve, since you want to find the negative solution, you don't need to find the positive solution, so we will have

(4-\sqrt{16+20}) /2=\frac{4-6}{2}=\frac{-2}{2} =-1

Therefore our answer is -1

8 0
3 years ago
Which expressions can never result in a negative real number when evaluated for any value of x? Select all that apply.
kolezko [41]
It is 5 beacause the x^1/3
7 0
4 years ago
If you multiply 1m times unlimedted what will u get
hjlf

Answer:

∞

simple and correct answer, infinite!

✌️:)

3 0
4 years ago
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