PLEASE HELP WILL MARK BRAINLIEST!:)

<img src="https://tex.z-dn.net/?f=2%20%5Csqrt%7B75%7D%20-%20%5Csqrt%7B108%7D%20%2B%205%20%5Csqrt%7B48%7D" id="TexFormula1" title

mario62 [17]

$\\ \sf\longmapsto 2 \sqrt{75} - \sqrt{108} + 5 \sqrt{48} \\\\ \sf\longmapsto 2 \sqrt{25 \times 3} - \sqrt{36 \times 3} + 5 \sqrt{16 \times 3} \\ \\ \sf\longmapsto 2 \times 5 \sqrt{3} - 6 \sqrt{3} + 5 \times 4 \sqrt{3} \\ \\ \sf\longmapsto 10 \sqrt{3} - 6 \sqrt{3} + 20 \sqrt{3} \\ \\ \sf\longmapsto (10 - 6 + 20) \sqrt{3} \\ \\ \sf\longmapsto 24 \sqrt{3}$

3 0

3 years ago

Read 2 more answers

What much expression represents a rational number?

Pie

Answer:

$\displaystyle \frac{2}{7}+\sqrt{121}$

Step-by-step explanation:

Rational Numbers

A rational number is any number that can be expressed as a fraction

$\displaystyle \frac{a}{b}, \ b\neq 0$

for a and b any integer and b different from 0.

As a consequence, any number that cannot be expressed as a fraction or rational number is defined as an Irrational number.

Let's analyze each one of the given options

$\displaystyle \frac{5}{9}+\sqrt{18}$

The first part of the number is indeed a rational number, but the second part is a square root whose result cannot be expressed as a rational, thus the number is not rational

$\pi + \sqrt{16}$

The second part is an exact square root (resulting 4) but the first part is a known irrational number called pi. It's not possible to express pi as a fraction, thus the number is irrational

$\displaystyle \frac{2}{7}+\sqrt{121}$

The square root of 121 is 11. It makes the whole number a sum of a rational number plus an integer, thus the given number is rational

$\displaystyle \frac{3}{10}+\sqrt{11}$

As with the first number, the square root is not exact. The sum of a rational number plus an irrational number gives an irrational number.

Correct option:

$\boxed{\displaystyle \frac{2}{7}+\sqrt{121}}$

6 0

3 years ago

The top and bottom margins of a poster are 6 ft and the side margins are each 8 ft. If the area of printed material on the poste

UNO [17]

Answer:

Dimension

Height =29.01

Breadth=38.70

Step-by-step explanation:

Printed area is =386 and margins as specified.

For printed area let height be x and breadth be y.

x*y=386 ⇒ y = $\frac{386}{x}$

Now considering the margins

Height = x+6+6=x+12

Weidth = $\frac{386}{x}$ +8 +8= $\frac{386}{x}$ + 16

Area of poster to be minimised =(x+12)( $\frac{386}{x}$ + 16)

Differentiate above area with respect to x and equate to zero to find extrema.

$\frac{dA}{dx}$ = 16 - $\frac{12*386}{x^{2} }$ =0

x=17.01

Now plug value of x in height and breadth

Height =29.01

Breadth=38.70

5 0

4 years ago

A car salesperson’s monthly salary is calculated by a base salary of $1600 per month plus $500 for each car sold. Graph the line

katrin2010 [14]

Answer: Ok so when he starts with one month he has $1600 each month and add $500x for example for the second month add another $1600 and $500x and so on the x stands for however many cars he sold that day

6 0

3 years ago

Which rational number equals 0.5? 01 50 1 5 5 10 5 9

barxatty [35]

Answer:

$0.5 = \frac{5}{10}$

this is perfect answer.

Please mark me brainliest.

7 0

3 years ago