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Rom4ik [11]
3 years ago
8

Ratio between 80% and 20%

Mathematics
1 answer:
musickatia [10]3 years ago
3 0
4:1 is the answer............
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5. A piece of plywood has a length that is 5 more than twice its width. Write the expression that represents the area of the ply
Sholpan [36]
5w^2 = A
 
You would multiply the width (w) by 5 because it's 5 times more than twice it's width. Then w (Width) would be to the power of 2 because it's 5 times more than twice its width. And this will all equal the Area (a) 
7 0
4 years ago
What is the area of a semi circle if the diameter is 14
Y_Kistochka [10]
Area of circle= pi r^2=49xpi.
6 0
4 years ago
A student organization wondered how many hours per week college students study during a term. Each of the 10 students in the org
Inga [223]

Answer:

No, a convenience sample was taken.Therefore, the sample may not be representative of all college students in terms of number of hours studied per week.

Step-by-step explanation:

One of the important conditions required in other to estimate the mean of the population from the confidence interval. Requires that the data must be a random Sample. This is to ensure that sample values are not biased and as such are representative of the larger group of data.

However, in the scenario described above, the sample chose. Are friend's of the student, this makes the data lack randomness as those who aren't friends to the student do not stand a chance of being selected. The sampling procedure employed is called convenience sampling.

4 0
3 years ago
What are the solutions to the equation x2-5x=14
Nana76 [90]

Answer:

Hope it helps you ,hope it is clear. I used completing the square method.

4 0
3 years ago
The greatest common factor of −27x2yz5 + 15x3z3
Goryan [66]
We have that
−27x2yz5 + 15x3z3

we know that
27-------------> 3³
15-------------> 3*5
z^5-----------> z² * z³
x³------------> x² * x

substituting in the original expression<span>

−27x2yz5 + 15x3z3---------->[-3</span>³*x²*y*z³*z²]+[3*5*x²*x*z³]

[-3³*x²*y*z³*z²]+[3*5*x²*x*z³]-------> [3*x² *z³]*{[-3² *y*z²]+[5*x]}

the greatest common factor is [3*x² *z³]
8 0
3 years ago
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