4 years ago

How to find the area of the rectangle

Mathematics

1 answer:

nataly862011 [7]4 years ago

4 0

Area of a rectangle = length x width

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Rationalize <br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B2%20%5Csqrt%7B7%7D%20%2B%203%20%5Csqrt%7B3%7D%20%20%7D%20"

Ivahew [28]

$\dfrac{1}{2 \sqrt{7} + 3 \sqrt{3} }$

$= \dfrac{1}{2 \sqrt{7} + 3 \sqrt{3} } \times \dfrac{2 \sqrt{7} - 3 \sqrt{3}}{2 \sqrt{7} - 3 \sqrt{3}}$

$=\dfrac{2 \sqrt{7} - 3 \sqrt{3}}{(2\sqrt{7})^2 - (3\sqrt{3})^2}$

$=\dfrac{2 \sqrt{7} - 3 \sqrt{3}}{28 - 27}$

$=\dfrac{2 \sqrt{7} - 3 \sqrt{3}}{1}$

$=2 \sqrt{7} - 3 \sqrt{3}$

6 0

3 years ago

Charlotte has to read a book for school. There are 513 pages in the book. She read 113 pages on

Delicious77 [7]

The answer is A. 221 pages.

5 0

3 years ago

Oil prices are projected to increase by 100% by next June. A quart of oil currently costs $2.45. What is the projected cost of a

lisov135 [29]

Answer:

4.9

Step-by-step explanation:

100% of 2.45 is 2.45.

We add 2.45 + 2.45 which is <u>4.9. </u>

Can I get brainliest?

8 0

3 years ago

Help me Guess just help please

Dmitrij [34]

Answer:

35

Step-by-step explanation:

√441 + 784 =

Add 441 and 784

√1225

Simplify

35

6 0

3 years ago

Read 2 more answers

Complete this statement 15a^2 x^2+12a^2 x+9a^2=3a^2( ? )

Shkiper50 [21]

You have to extract common factor 3a^2

=> 3a^2 (5 x^2 + 4x + 3)

If you need help to know where each term inside the parenthesis come from, this is hoy you do it:

15a^2x^2
------------- = 5x^2
3a^2

12a^2x
----------- = 4x
3a^2

9a^2
-------- = 3
3a^2

Answer: 3a^2 (5x^2 + 4x + 3)

4 0

4 years ago