1) Complete the following items dealing with sets.If set A = {3, 4, 7, 9} and set B = {8, 9, 10, 11}, list the elements in numerical order for

A B = {_,_,_,_,_,_,_}

A B = {_}

2)If set A = {3, 4, 7, 9}, set B = {8, 9, 10, 11}, and set C = {4, 9, 11, 13, 15},

list the elements in numerical for A (B U C) = {_,_}

3) If set A = {3, 4, 7, 9} and if set D = {9, 4, 3, 7}, A = D.

True or False

Answers

Answer 1

Answer: From the set {21, 37, 45}, use substitution to determine which value of x makes the inequality true.x - 8 > 29
45
none of these
37
21From the set {21, 37, 45}, use substitution to determine which value of x makes the inequality true.x - 8 > 29
45
none of these
37
21

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The slope of a speed-time graph indicatesa. acceleration.
b. speed.
c. direction.
d. velocity.

Answers

A. Accelleration

A graphs slope has the formular rise/run, in this case, the change in speed/change in time (because speed is on the y-axis which means it is the "rise" and time is on the x-axis which means it is the "run").
If you go to a formulae sheet, you will see that a = change in speed/change in time.
This is the same as the formular of the graph therefore the slope of a speed-time graph indicates accelleration

Hello, could you please help me with some ideas? This is the question:List at least five idioms that you have come across in your own life, and indicate both the idiomatic and literal meanings of each of the expressions.

Answers

Answer:

Your on thin ice.

The pen is mightier than the sword.

Its raining cats and dogs.

If your going through hell keep on going face that fire, walk right though it. don't slow do.

Step-by-step explanation:

Answer:

1. Time is money

Meaning: Work faster or more efficiently

2. Don’t judge a book by its cover

Meaning: Not judging something by its initial appearance

3.Getting a second wind

Meaning: Having energy again after being tired or worn out

4.Don’t judge a book by its cover

Meaning: Not judging something by its initial appearance

5.To be on cloud nine

Meaning: To be extremely happy

These are the ones I use.

Find the slope of the line passing through the points (2,-3) and (1,-5) .

Answers

Answer:

The slope of the line passing through the points (2, -3) and (1, -5) is 2.

Find the area of the regular polygon. Give the answer to the nearest tenth.pentagon with a side of 6 m (1 point)
A. 123.9 m²
B. 12.4 m²
C. 61.9 m²
D. 49.5 m²

Answers

The area of the regular pentagon: $A=5* (s*a)/(2)$ where s=6m, and a=3*tg 54°= 3*1.37=4.13 m
Explanation: 54° is a half of the inner angle of the pentagon. The interior angles of a pentagon add up to 540°. Each angle is 108°.
Finally: A= $5* (6*4.13)/(2)$ =61.93 m².
Answer: C) 61.9 m²

Answer:

61.9

Step-by-step explanation:

center center is 72 degree for each triangle

the distance of center to the side h=3/tan 36=4.12,

area=5* (4.12*6)/2=61.94==61.9

What is the value of x in the solution to the following system of equations?x − 2y = 2
3x + y = 6

Answers

x -2y = 2
3x +y = 6 multiplie both sides by 2 => 6x +2y = 12

x -2y = 2
6x +2y = 12
------------------- assum the same terms
7x 0 = 14

x = 14/7

x = 2

The sum of 1/9 2/3 and 5/18 is what

Answers

So first we have to find a common denominator, in this case it is simple because 18 works. So now we have to make 1/9 into ?/18, to do this we multiply 1/9 by 2, so now we have 2/18 + 2/3 + 5/18. To make 2/3 into ?/18 we have to multiply by 6, so now we have 2/18 + 12/18 + 5/18. Now you add all the numerators (top numbers) together and we get 19/18, which is the same as 1 1/18

ANSWER: 19/18 or 1 1/18.

Feel free to ask any questions about my explanation if you need it(:

The sum of the fractions $(1)/(9),(2)/(3),\frac{5}{{18}}$ is $\boxed{\frac{{{\mathbf{19}}}}{{{\mathbf{18}}}}}$ .

Further explanation:

Given:

The given fractions are $(1)/(9),(2)/(3),\frac{5}{{18}}$ .

Step by step explanation:

Step 1:

First we make the denominator same of the given fraction.

The equivalent fraction of $(1)/(9)$ can be calculated as,

$\frac{{1 * 2}}{{9 * 2}} = \frac{2}{{18}}$

The equivalent fraction of $(2)/(3)$ can be calculated as,

$\frac{{2 * 3}}{{3 * 3}} = (6)/(9)$

The equivalent fraction of $\frac{5}{{18}}$ can be calculated as,

$\frac{{5 * 1}}{{18 * 1}} = \frac{5}{{18}}$

Step 2:

We know the sum of the given fractions and the sum of the equivalent fractions would be same.

Now find the sum of the equivalent fraction to find the sum of the given fractions $(1)/(9),(2)/(3),\frac{5}{{18}}$ as,

$\begin{aligned}\frac{2}{{18}} + \frac{{12}}{{18}} + \frac{5}{{18}} &= \frac{{2 + 12 + 5}}{{18}} \n&= \frac{{19}}{{18}} \n\end{aligned}$

Therefore, the sum of the fractions $(1)/(9),(2)/(3),\frac{5}{{18}}$ is $\frac{{19}}{{18}}$ .

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Answer details:

Grade: Middle school

Subject: Mathematics

Chapter: Fractions

Keywords: sum, equivalent, fraction, denominator, numerator, number, division, multiplication, addition, difference, product, natural number

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