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poizon [28]
2 years ago
15

√32+√42 ÷ √8 +√12 simplify

Mathematics
1 answer:
pav-90 [236]2 years ago
5 0

Note: It should be 48 instead of 42 because √42 cannot be simplified.

Given:

Consider the given expression is

\dfrac{\sqrt{32}+\sqrt{48}}{\sqrt{8}+\sqrt{12}}

To find:

The simplified form of the given expression.

Solution:

We have,

\dfrac{\sqrt{32}+\sqrt{48}}{\sqrt{8}+\sqrt{12}}

It can be written as

=\dfrac{\sqrt{16\times 2}+\sqrt{16\times 3}}{\sqrt{4\times 2}+\sqrt{4\times 3}}

=\dfrac{4\sqrt{2}+4\sqrt{3}}{2\sqrt{2}+2\sqrt{3}}

=\dfrac{4(\sqrt{2}+\sqrt{3})}{2(\sqrt{2}+\sqrt{3})}

=\dfrac{4}{2}

=2

Therefore, the simplified form of the given expression is 2.

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A rectangular floor of area 21.6 m2 is going to be tiled. Each tile is rectangular, and has an area of 288 cm2. An exact number
PIT_PIT [208]

Answer:

Area of Floor = 21.6.m²

Area of tile = 288 cm² = 0.0288 m²

No. of tiles = Area of floor/ area of tile

= 21.6/0.0288

= 750

<h3>750 tiles can be put into the space </h3>
5 0
2 years ago
Theo and Kade worked on a school project together. Theo worked on the project 3 fewer hours than Kade did. Altogether, they work
babunello [35]

Let the hours Kade worked = X

Theo would be X - 3 ( 3 less than Kade).

Now you have:

X  + X -3 = 27

Combine like terms:

2x - 3 = 27

Add 3 to each side:

2x = 30

Divide both sides by 2:

x = 15

Kade worked 15 hours.

Theo worked 12 hours.

6 0
3 years ago
Read 2 more answers
Sheila has x 20 dollar bills, and Tamsin has y 10 dollar bills. Sheila has a total of $50 more than Tamsin, but Tamsin has 1 mor
natka813 [3]

Answer:

Sheila have 6 bills

Step-by-step explanation:

Suppose Sheila has x '20' dollar bills, so the total cost of her bill = $20x

Suppose Tamsin has y '10' dollar bills, so the total cost of her bill = $10y

<h3>Equation 1</h3>

<em>Sheila has a total of $50 more than Tamsin</em>

<h2><em>10y + 50 = 20x</em></h2><h2 /><h3>Equation 2</h3>

<em>Tamsin has 1 more bill than Sheila.</em>

<h2>y = x + 1 </h2><h2 />

<em>Now solve them by putting value of x in equation </em>

10( x + 1 ) + 50 = 20x

10x + 10 + 50 = 20x

60 = 20x - 10x

10x = 60

x = 60/10

x = 6

and

y = 7

<em> </em>

6 0
3 years ago
11) the difference between the product of 4 and a<br><br> number and the square of the number
marta [7]

Answer:

= 4x-x^2\\\\

Step-by-step explanation:

Let the number be x;

The product of 4 and the number will be;

= 4 * x\\\\= 4x

The the square of the number is given as;

= x^2\\

Taking the difference of both expressions above;

= 4x-x^2\\\\

Factor out the common term:

= x(4-x)\\\\

Hence the difference between the product of 4 and a  number and the square of the number is = 4x-x^2\\\\

6 0
3 years ago
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