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4 years ago

A system of equations is given below.

1 answer:

5 0

First, solve the given system of linear equations.

Second, multiply the first equation by 4 (which was an arbitrary choice). Add your result to the 2nd equation.

You should now have the following:

First equation: No change: 2x + 7y = 1

Second equation: 4(-3x – 4y = 5) = -12x -16y = 20

Solve this new system of linear equations. Do you (or do you not) obtain the same solution as your earlier one?

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The number of lines of reflection about which the combined figure can reflect onto itself is

PilotLPTM [1.2K]

Answer:

4 lines of reflection can the combined figure reflect onto itself.

Step-by-step explanation:

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4 years ago

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Consider the following linear regression prediction equation: Y = 12 + –1x. What is the direction of the relationship between th

Fynjy0 [20]

Answer:

Step-by-step explanation:

given that the following linear regression prediction equation: Y = 12 + –1x

Here slope = -1

Whenever regression slope is negative, we can say that the two variables x and y are negatively correlated.

In other words, when y increases x decreases and vice versa.

The relationship between the variables is negative or inverse.

The graph of this line with negative slope shows the line as moving from top left to bottom right

Here slope = -1

Hence for unit increase in x, there is one unit increase in y.

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4 years ago

What’s 0.056 as a percentage

katrin2010 [14]

Answer:

5.6 percent

Step-by-step explanation:

The answer is 5.6 percent because you move the decimal point 2 places to the right and that is how you change the decimal to a percent

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3 years ago

Read 2 more answers

Determine whether the following statement regarding the hypothesistest for two population proportions is true or false.

murzikaleks [220]

Answer:

False

Step-by-step explanation:

Let p1 be the population proportion for the first population

and p2 be the population proportion for the second population

Then

$H_{0}$ p1 = p2

$H_{a}$ p1 ≠ p2

Test statistic can be found usin the equation:

$z=\frac{p1-p2}{\sqrt{{p*(1-p)*(\frac{1}{n1} +\frac{1}{n2}) }}}$ where

p1 is the sample population proportion for the first population

p2 is the sample population proportion for the second population

p is the pool proportion of p1 and p2

n1 is the sample size of the first population

n2 is the sample size of the second population.

As |p1-p2| gets smaller, the value of the test statistic gets smaller. Thus the probability of its being extreme gets smaller. This means its p-value gets higher.

As the p-value gets higher, the null hypothesis is less likely be rejected.

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3 years ago

Find the value of x that makes the equation -3 (x + 10) + 2x = 30 true.

Anit [1.1K]

The answer to your problem would be -60

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3 years ago