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2 years ago

Find the mean of the following set of numbers. 8,5,9,5,5,7,3

Mathematics

2 answers:

Svetlanka [38]2 years ago

7 0

Answer:

Step-by-step explanation:

add them all up and divide by 7

Artist 52 [7]2 years ago

5 0

Hey there!

Another word for the mean is the average. To calculate the mean in a set a numbers, you add up all of the numbers and then divide by the number of numbers!

8+5+9+5+5+7+3=42

We also have seven numbers in our data set, so we divide by seven!

42/7=6

Therefore, our mean is six!

I hope that this helps! Have a great day! :)

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Lines a and b are perpendicular. Which statements below must be true? Select all that apply. The slopes of lines a and b are rec

Semenov [28]

Answer:

When the slopes of lines a and b are multiplied, the product is −1.

Line a and line b intersect to form four right angles.

Step-by-step explanation:

Given

Perpendicular lines a and b

Required

Select the true statements

Represent the slope of line a with $m_1$ and the slope of b with $m_2$ .

The condition for perpendicularity is:

$m_1 * m_2 = -1$

Solving further:

$m_1 = -\frac{1}{m_2}$

To solve further, we need to analyze each of the given options

(a) This is not true because the slope of perpendicular lines are not reciprocal

(b) This is also not true because perpendicular lines do not necessarily have to intersect at their midpoints

(c) This is true because of the condition stated above: $m_1 * m_2 = -1$

(d) This is also true because perpendicular lines form right angles when they intersect

(e) This is not true because of the condition stated above: $m_1 = -\frac{1}{m_2}$

(f) This is not true because of the condition stated above: $m_1 = -\frac{1}{m_2}$

5 0

2 years ago

On the number line what are all the numbers absolute value if 1.5

inna [77]

Answer:

I think it's between +1 and +2

Step-by-step explanation:

Please follow me on brainy

3 0

2 years ago

What is the answer if x=2? -3x^2+14x-2

KIM [24]

Simple...

you have: x=2 --->>> $-3x^{2} +14x-2$

plug it in-->>>

$-3(2)^{2} +14(2)-2$

=14

Thus, your answer.

5 0

2 years ago

Read 2 more answers

If the graph of the function moves to the right two units what is the new vertex of the function

Allisa [31]

Answer:

Let's talk through this a one step at a time.

*Since f(x) is concave-up with its vertex on the x-axis, we know f(x) ≥ 0.

*We also know that when we shift a function's domain by a positive number, we shift the function left and when we shift a function's domain by a negative number, we shift the function right. So f(x-5) is f(x) shifted to the right by 5.

*At this point, f(x-5) has its vertex at (5,0).

*When we negate f(x-5), the parabola becomes concave down yet the vertex remains at (5,0). Now we're at -f(x-5). At this point we have -f(x-5)≤0 with a range (-∞,0]

*If we add 2 to create g(x)=2-f(x-5), then we have a concave down parabola with its vertex shifted up by 2, at (5,2). So, g(x) is concave down with its vertex at (5,2). Hence

5 0

2 years ago

the table shows a relative frequency distribution for the size of farms in the united states. find the probability that a random

Alina [70]

Step-by-step explanation:

The probability that a farm has 500 or more acres is:

P = 0.076 + 0.047 + 0.035

P = 0.158

5 0

2 years ago

Find the mean of the following set of numbers. ​ ​ 8,5,9,5,5,7,3

Find the mean of the following set of numbers. 8,5,9,5,5,7,3