What is the sum of sqrt 18 plus sqrt 72

Mathematics

1 answer:

Tanzania [10]3 years ago

7 0

18=2*3*3=2*3²
72=2*2*2*3*3=2³ *3²

√18+√72=√(2*3²) +√(2³ * 3²)=3√2 + 3*2√2=3√2 + 6√2=9√2

Answer: √18+√72=9√2

You might be interested in

Which number is a rational number 49. 9/2 13/16 34

s2008m [1.1K]

Answer:
9/2

Step-by-step explanation:
A Rational Number can be made by dividing two integers. (An integer is a number with no fractional part.) So therefore, 9/2 is a rational number

7 0

3 years ago

Read 2 more answers

The sum of x and ten is twenty( write the equation

iren [92.7K]

Answer:

2x10=20 X=2

Step-by-step explanation:

Please mark brainliest

5 0

2 years ago

Read 2 more answers

I need help on this question

NISA [10]

The correct answer should be C to this question

4 0

2 years ago

Read 2 more answers

Write an equation in point slope form for the line that passes through (-5,6) and (-3,-9).

Finger [1]

$\bf (\stackrel{x_1}{-5}~,~\stackrel{y_1}{6})\qquad
(\stackrel{x_2}{-3}~,~\stackrel{y_2}{-9})
\\\\\\
slope = m\implies
\cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{-9-6}{-3-(-5)}\implies \cfrac{-9-6}{-3+5}\implies -\cfrac{15}{2}$

$\bf \begin{array}{|c|ll}
\cline{1-1}
\textit{point-slope form}\\
\cline{1-1}
\\
y-y_1=m(x-x_1)
\\\\
\cline{1-1}
\end{array}\implies y-6=-\cfrac{15}{2}[x-(-5)]\implies y-6=-\cfrac{15}{2}(x+5)
\\\\\\
y-6=-\cfrac{15}{2}x-\cfrac{75}{2}\implies y=-\cfrac{15}{2}x-\cfrac{75}{2}-6\implies y=-\cfrac{15}{2}x-\cfrac{87}{2}$

8 0

3 years ago

The answer to the question “On average, how many pages are in a novel?” would be measured by which scale?

Juli2301 [7.4K]

In the days of the typewriter, a double-spaced page with 1-inch margins would hold an average of 250 words. So you could assume that since 4 pages = 1000 words

8 0

3 years ago