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3 years ago

5

What does a closed circle on a number line indicate? Is it the solution does not include that number?

1 answer:

Lilit [14]3 years ago

3 0

No, a closed circle does include that number.

Closed circles are used for greater than or equal to or less than or equal to
Open circles are only used for greater than or less than

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I need help on 1 and 2

Naily [24]

Answer:

1. ∠1 and ∠3. ∠1 and ∠2.

2. ∠6 and ∠5. ∠6 and ∠4

Step-by-step explanation:

Adjacent angles are two angles that have a common vertex but do not overlap. The ones above are the pairs of adjacent angles that share a common vertex, but do not overlap.

8 0

3 years ago

Let x be a random variable representing percentage change in neighborhood population in the past few years, and let y be a rando

Lisa [10]

Answer:

$m=\frac{2506.833}{604.833}=4.1447$

Nowe we can find the means for x and y like this:

$\bar x= \frac{\sum x_i}{n}=\frac{77}{6}=12.833$

$\bar y= \frac{\sum y_i}{n}=\frac{587}{6}=97.833$

And we can find the intercept using this:

$b=\bar y -m \bar x=97.833-(4.1447*12.833)=44.644$

So the line would be given by:

$y=4.1447 x +44.644$

Step-by-step explanation:

$m=\frac{S_{xy}}{S_{xx}}$

Σx = 77, Σy = 587, Σx2 = 1593, Σy2 = 70,533, and Σxy = 10040.

Where:

$S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}$

$S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}$

With these we can find the sums:

$S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}=1593-\frac{77^2}{6}=604.833$

$S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i){n}}=10040-\frac{77*587}{6}=2506.833$

And the slope would be:

$m=\frac{2506.833}{604.833}=4.1447$

Nowe we can find the means for x and y like this:

$\bar x= \frac{\sum x_i}{n}=\frac{77}{6}=12.833$

$\bar y= \frac{\sum y_i}{n}=\frac{587}{6}=97.833$

And we can find the intercept using this:

$b=\bar y -m \bar x=97.833-(4.1447*12.833)=44.644$

So the line would be given by:

$y=4.1447 x +44.644$

5 0

3 years ago

Which phrase in paragraph 3 of "The pit and the Pendulum" most strongly contributes to a mood of trade

BaLLatris [955]

Answer:

"and motion, and touch—a tingling

sensation pervading my frame. Then the mere consciousness

of existence, without thought—a condition which lasted

long. Then, very suddenly, thought, and shuddering terror,"

7 0

3 years ago

Linear Equations In Any Form. Help ASAP Please

Ronch [10]

The answer is y = 3/4 x + 2

<em>Explanation:</em>

Basically, the formula for a linear equation is y = mx + b

b = y-intercept

mx = slope

slope = rise/ run (pos.)

it can also be fall/ crawl (neg.)

In the graph the line meets at the y-int. at 2, the line rises 3 and goes right 4 each time.

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3 years ago

Miss Spanos, is a teacher at South Hanover, and she has 3 quarts of liquid glue and 24 empty bottles that each hold 1 cup. Does

Vladimir79 [104]

Answer:

No

Step-by-step explanation:

there are 4 cups in a quart, so 4 x 3 = 12 cups, so no she doesn't have enough glue to fill all 24 empty bottles

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3 years ago