Reflexive property of equality: 3x-1=

Mathematics

1 answer:

kkurt [141]3 years ago

7 0

3x - 1 = 3x -1 because it's reflecting itself

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What’s the answer??? (SOMEONE PLEASE HELP)

iragen [17]

Answer:

(-4, 3] U (3, 8]

Step-by-step explanation:

The first lines range is (-4,3]

(the round bracket is because the -4 not included ( clear circle) and the square on because the 3 is included in the range ( the filled circle))

second line - range is (3, 8]

So its (-4, 3] U (3, 8]

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4 years ago

Round this amount to the nearest dollar.<br>$4,188.24<br>please im so comfused

NARA [144]

$4,188.24 round to nearest dollar = $4,188

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What are the solutions to the following system of equations? Select the correct answer below. y = x^2 − 4x + 3 2x + y = 6

ELEN [110]

2x+y=6

y=6-2x and y=x^2-4x+3

The solution occurs when they are equal so we can say y=y which is:

x^2-4x+3=6-2x add 2x to both sides

x^2-2x+3=6 subtract 6 from both sides

x^2-2x-3=0 factor

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So x=-1 and 3, using y=6-2x we find the corresponding y values...

y(-1)=6--2=8, y(3)=6-6=0 so the two solutions are the points:

(-1,8) and (3,0)

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3 years ago

At a carnival, the cost to play a bowling game is $2, plus $0.40 for each attempt to knock over the pins. Which inequality would

Anna [14]

Answer:

Step-by-step explanation:

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3 years ago

A country's education department reported that in 2015, 70.8% of students enrolled in college or a trade school within 12 months

Gennadij [26K]

Answer:

The confidence interval has a lower limit of 0.546 and an upper limit of 0.675.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the z-score that has a p-value of $1 - \frac{\alpha}{2}$ .

In 2017, a random sample of 154 individuals who graduated from high school 12 months prior was selected. From this sample, 94 students were found to be enrolled in college or a trade school.

This means that $n = 154, \pi = \frac{94}{154} = 0.6104$