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nikdorinn [45]
3 years ago
8

20x-8y=-5 10x-4y=-4 Can someone please solve this

Mathematics
1 answer:
Igoryamba3 years ago
7 0
No Solution

When you do the substitution method, you would have the x and y variables equal to zero. In systems of equations, the equations are equal with each other.

20x-8y=-5
10x-4y=-4

20x-8y=-5
-2(10x-4y=-4)

20x-8y=-5
-20x+8y=8

The 20x and -20x cancel out
The -8y and 8y also cancel out. Thus leaving -5 and 8

According to system of equations, the equations must be equal. Additionally, -5 does not equal to 8.

Therefore, the answer is no solution.

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Can someone please help me with #1 through #14 of the geometry angle pairs #6 assignment?​
leonid [27]

1) adjacent

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3 0
1 year ago
Construct the confidence interval for the population mean. c=. 95 x=6. 4 o=. 3 and n=42.
Damm [24]

The confidence interval is (63.909, 64.0907).

The confidence interval of a population mean is found using the formula:

CI = x ± z(σ/√n), where CI is the confidence interval, x is the mean, z is the z-score corresponding to the confidence level, σ is the standard deviation, and n is the population size.

In the question, we are given the confidence level, c = 95%.

Z-score corresponding to this, z = 1.96.

The mean of the population, x = 6.4.

The standard deviation of the population, σ = 0.3.

The population size, n = 42.

Thus, using the formula, the confidence interval is:

CI = 6.4 ± 1.96(0.3/√42),

or, CI = 6.4 ± 0.09073037.

Thus, the confidence interval is (64 - 0.09073037, 64 + 0.09073037), or, (63.909, 64.0907).

Learn more about the confidence interval at

brainly.com/question/17097944

#SPJ4

3 0
2 years ago
Find the Circumference and area of the circle with the center C=(-1,2) and a point on the circle A(4,-1). Round to the nearest t
Anuta_ua [19.1K]

Answer:

idk the answer but i do know this

Step-by-step explanation:

the formula for the area of a circle is pi times the radius squared

4 0
3 years ago
In a triangle ABC, which is the longest side if:
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Answer:

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2 years ago
FIANCE 50 HELP ASAP
Assoli18 [71]

Calculate the risk measure (beta) compared to the returns of asset and market premium.

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The answer is 3.71

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2 years ago
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