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nataly862011 [7]
3 years ago
13

What is the x- coordinate of the solution to the system of equations? 0.1x+0.5y=0.6 0.4x-1.2y=-5.6

Mathematics
1 answer:
Fiesta28 [93]3 years ago
4 0
We have that

<span>0.1x+0.5y=0.6
0.4x-1.2y=-5.6

using  a graph tool
see the attached figure

the solution is the point (-6.5,2.5)

the answer is
the coordinate x of the solution is x=-6.5

</span>

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A circular pool at a water treatment facility has a radius of 6 meters. About how long is the outer rim of the pool?
tia_tia [17]
I hope this helps you



Area=6^2pi=36pi


Circumference =2.6pi=12pi
7 0
3 years ago
Scores on an exam follow an approximately normal distribution with a mean of 76. 4 and a standard deviation of 6. 1 points. What
crimeas [40]

If scores on an exam follow an approximately normal distribution with a mean of 76.4 and a standard deviation of 6.1 points, then the minimum score you would need to be in the top 2% is equal to 88.929.

A problem of this type in mathematics can be characterized as a normal distribution problem. We can use the z-score to solve it by using the formula;

Z = x - μ / σ

In this formula the standard score is represented by Z, the observed value is represented by x, the mean is represented by μ, and the standard deviation is represented by σ.

The p-value can be used to determine the z-score with the help of a standard table.

As we have to find the minimum score to be in the top 2%, p-value = 0.02

The z-score that is found to correspond with this p-value of 0.02 in the standard table is 2.054

Therefore,

2.054 = x - 76.4 ÷ 6.1

2.054 × 6.1 = x - 76.4

12.529 = x - 76.4

12.529 + 76.4 = x

x = 88.929

Hence 88.929 is calculated to be the lowest score required to be in the top 2%.

To learn more about normal distribution, click here:

brainly.com/question/4079902

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5 0
1 year ago
Hello, I need help. Just answers
rodikova [14]
Me too maybe b I just need some answers
8 0
1 year ago
3\10 x 2\3<br><br> A.5\30<br><br><br> B.6\13<br><br><br> C.1\5<br><br><br> D.5\13
kow [346]
3/10 times 2/3 3 times 2 is 5 and 10 times 3 is 30 5/30 a
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3 years ago
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A potato sorting machine produces 5 pounds of potatoes an average for the standard aviation is a half a pound assuming the weigh
mixas84 [53]
For a 95% confidence interval, the corresponding z-score is 1.96. Therefore the deviation will by 1.96*0.5 lbs = 0.98 lbs. Therefore, the confidence interval will be (5 - 0.98, 5 + 0.98), which is (4.02, 5.98). The weight range is from 4.02 lbs to 5.98 lbs.
5 0
4 years ago
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