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Tresset [83]
3 years ago
14

One-third of a number is 2 more than one-fifth of the same number

Mathematics
1 answer:
Mazyrski [523]3 years ago
7 0
It’s fifteen. I started with 15 bc it’s the smallest number they’re both a factor of. And I didn’t think they’d make it too hard.
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(x^3 -6x^2 -7x -9)/ (x-3)
maks197457 [2]

The answer is x^2 - 3x - 8 - (33/(x - 3))

7 0
3 years ago
Convert 91007500 to scientific notation
sesenic [268]
Scientific notation is a number greater than 0 and less than 10 multiplied by 10 to a power. The expression will be equal to the number given.
91007500
We move the decimal place first so that the number is within our range:
9.1007500
Then we count how many places we moved the decimal. In this case we moved it to the left 7 times, so our exponent of 10 will be 7
Therefore in scientific notation it is 9.1007500 x 10^7
Some teachers prefer to have scientific notation rounded off to the nearest 10th place, so that would be:
9.1 x 10^7
8 0
3 years ago
As discussed in Exercise 6.10, the General Social Survey reported a sample where about 61% of US residents thought marijuana sho
Maslowich

Answer: 2285

Step-by-step explanation:

Formula to find the sample size is given by :-

n=p(1-p)(\dfrac{z_c}{E})^2

, where p = prior estimate of population proportion.

E= Margin of error.

z_c = z-value for confidence interval of c.

Given : Confidence interval : 95%

From the z-value table , the z-value for 95% confidence interval = z_c=1.96

The General Social Survey reported a sample where about 61% of US residents thought marijuana should be made legal.

i.e. the prior estimate of population proportion of US residents thought marijuana should be made legal : p=0.61  

 [∵ sample proportion is the best estimate for population proportion.]

Margin of error : E= 2%=0.02

Now, the required minimum sample size would be :-

n=0.61(1-0.61)(\dfrac{1.96}{0.02})^2

Simplify ,

n=0.2379\times9604=2284.7916\approx2285

Thus , we need to survey <u>2285</u> Americans .

4 0
3 years ago
V1 - 2 sin cos 0 = cos 0 - sin​
kramer

\sqrt{1 -  2sin θ \cosθ }  =  \sqrt{ {sin}^{2} θ   + {cos}^{2}θ  -  2 sinθcosθ } =  \sqrt{ {(cosθ   - sinθ) }^{2} }  = cosθ - sinθ

4 0
3 years ago
Draw a 270 degrees clockwise
Brilliant_brown [7]
You can't quite do that
6 0
3 years ago
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