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4 years ago

15

Name all sets of real to which each numbers belongs 2/3?

1 answer:

timofeeve [1]4 years ago

8 0

Natural - Natural numbers include only positive whole numbers beginning with 1.

<em>Ex. 1, 2, 3, 4, 5.....</em>

Whole - Whole numbers include all Natural Numbers and 0.

<em>Ex. 0, 1, 2, 3, 4, 5....</em>

Integer - All Whole and Natural Numbers, and negative non-decimal numbers.

<em>Ex. .... -2, -1, 0, 1, 2, 3....</em>

Rational - All Natural and Whole Numbers and Integers. Also included all repeating decimals and terminating decimals. (No never-ending, no pattern decimals.)

<em>Ex. 2/3, -1.5, 1, 2, -8...</em>

Real - All Natural and Whole Numbers, Integers, and Rational Numbers.

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The area of a door is 3024 square inches. If

olasank [31]

Answer:

Lets take all factors into consideration first

The door is a rectangle and the area of a rectangle is length times width

Let the width be w

Let the length be l

Equation length × breadth = area

(w+48)w = 3024

w^2 + 48w = 3024

w^2 + 48w - 3024 = 0

w^2 + 84w - 36w - 3024 = 0

w(w + 84) -36 ( w + 84) = 0

(w + 84) (w - 36) = 0

w + 84 = 0 AND w - 36 =0

w = -84 and w = 36

Since width cannot be negative, the right answer is 36

How did I get 84 and 36? Well, I had to factorize 3024 and since 84 times 36 is 3024 and 84 minus 36 is 48, I chose them.

7 0

3 years ago

Simplify (-8 + 81) – (5 + 4). (1 point)<br> O 1) -17<br> O 29<br> 3) - 13 + 127<br> O 4) – 13+4i

Nuetrik [128]

Answer:

Simplified = 64.

Step-by-step explanation:

81-8 & 5 + 4 = 73-9 = 64.

6 0

3 years ago

When completing the square on the equation c2 + 110 = 12, the resulting solution is:<br> It

Delvig [45]

Answer:

$c=1$ and $c=-12$

Step-by-step explanation:

The correct equation is:

$c^2+11c=12$

To solve by completing the square method.

Solution:

We have:

$c^2+11c=12$

In order to solve by completing the square method we will carry out the following operations to the given equation to get a perfect square binomial.

We can write as:

$c^2+2.\frac{11}{2}c=12$

$c^2+2.\frac{11}{2}c+(\frac{11}{2})^2-(\frac{11}{2})^2=12$

$(c+\frac{11}{2})^2-(\frac{11}{2})^2=12$ [As $c^2+2.\frac{11}{2}c+(\frac{11}{2})^2=(c+\frac{11}{2})^2$ ]

Adding both sides by $(\frac{11}{2})^2$

$(c+\frac{11}{2})^2-(\frac{11}{2})^2+(\frac{11}{2})^2=12+(\frac{11}{2})^2$

$(c+\frac{11}{2})^2=12+\frac{121}{4}$

Taking LCD to add fraction.

$(c+\frac{11}{2})^2=\frac{48}{4}+\frac{121}{4}$

$(c+\frac{11}{2})^2=\frac{169}{4}$

Taking square root both sides.

$\sqrt{(c+\frac{11}{2})^2}=\sqrt{\frac{169}{4}}$

$c+\frac{11}{2}=\pm\frac{13}{2}$

Subtracting both sides by $\frac{11}{2}$ :

$c+\frac{11}{2}-\frac{11}{2}=\pm\frac{13}{2}-\frac{11}{2}$

$c=\pm\frac{13}{2}-\frac{11}{2}$

So, we have:

$c=\frac{13}{2}-\frac{11}{2}$ and $c=-\frac{13}{2}-\frac{11}{2}$

$c=\frac{2}{2}$ and $c=\frac{-24}{2}$

$c=1$ and $c=-12$ (Answer)

6 0

4 years ago

Gnesinka [82]

Answer:

Complete the sentences.

To find the z-score for the 56th percentile means that

the area above the z-score will be ✔ 0.44 and the

area below the z-score will be ✔ 0.56.

The z-score for the 56th percentile is ✔ 0.15

*you typed the question weird, but I hope this helps*

3 0

3 years ago

Read 2 more answers

Find small b if A= 2358.85, h= 38.2 and B= 45.6

DedPeter [7]

Hope this is clear and helpful :)

3 0

3 years ago