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Maurinko [17]
3 years ago
11

8x – 20 is the correct simplified expression for 4(2x – 5). Explain how to verify the simplified expression.

Mathematics
2 answers:
ziro4ka [17]3 years ago
8 0
Yes, because 4 times 2 is 8(x) and 4 times 5 is 20.
lesya [120]3 years ago
7 0

Answer:

Step-by-step explanation:

use the distributive property to multiply 4 by 2x and 4 by -5. the answer will be 8x - 20

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Answer:

The statistic for this system of hypothesis is given by:

F=\frac{s^2_1}{s^2_2}

If the statistic is equal to 1 then that means s^2_1 = s^2_2 and we don't have enough evidence to conclude that the two population variances and deviations are different.

Step-by-step explanation:

System of hypothesis

We want to test if the variation for a group1 is equal to another one 2, so the system of hypothesis are:

H0: \sigma^2_1 = \sigma^2_2

H1: \sigma^2_1 \neq \sigma^2_2

Calculate the statistic

The statistic for this system of hypothesis is given by:

F=\frac{s^2_1}{s^2_2}

If the statistic is equal to 1 then that means s^2_1 = s^2_2 and we don't have enough evidence to conclude that the two population variances and deviations are different.

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4 years ago
What number is 100`000 more than seven hundred two thousand eight three
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Answer:

802,083

Step-by-step explanation:

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3 years ago
If I have 60 coins consisting of dimes and quarters, and if I have x dimes, how many quarters do i have?
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I don't know if I'm correct, I'm guessing... 30
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Read 2 more answers
Write an equation of a line containing (2, -3) and perpendicular to 3x+4y=14 answer
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Answer:

Step-by-step explanation:

From the condition of perpendicularity, if two lines must be perpendicular to each other, the product of their gradient rather the slope must be equaled to ( -1 ).

Equation of a line ; y = mx+ c, where m1 is the gradient of the line and c us the point of intersection if the line on the y- axis.therefore, the equation

3x + 4y = 14, when re arranged, now becomes, 4y = -3x + 14, divide through by 4, gives, y = -3x/4 + 14.

Therefore, m1, = -3/4 and m2, = 4/3 going by the condition. Since the line passes through the coordinate of (2,3), where x = 2, and y = -3, then, substitute for x and y in y = mx+ c, minding the m2, to find C, therefore,

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Multiply through by 3 to make it a linear equation,

-9 = 8 + 3c; -9 - 8 = 3c, -17= 3c

c = -17/3.Now substitute for c in the equation ,y = mx+ c, the equation now becomes, y = 4x/3 - 17/3. Therefore the new equation is

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7 0
3 years ago
What is the equation of the line that passes through the point (-5,5)and has a slope of -1
erastova [34]

Answer:

<h2>           y = - x  </h2>

Step-by-step explanation:

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The point-slope form of the equation:

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So:

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y = -x             ←  the slope-intercept form of the equation

3 0
3 years ago
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