2 years ago

Help me on this math question please

Mathematics

1 answer:

Sunny_sXe [5.5K]2 years ago

3 0

Answer:

its simplest form is 4/5

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Simplify<br><br> sqrt(3 + 2 sqrt 2) ...?

trasher [3.6K]

The answer is 1 + √2

sqrt(2) is $\sqrt{2}$
sqrt(3 + 2 sqrt 2) is $\sqrt{3 +2 \sqrt{2} }$
Now, let's simplify $\sqrt{3 +2 \sqrt{2} }$ .
We will use square of sum: (a + b)² = a² + 2ab + b²

$\sqrt{3 +2 \sqrt{2} } = \sqrt{1+2+2 \sqrt{2} }= \sqrt{1+2 \sqrt{2}+2 }= \\ 
= \sqrt{1^{2} +2*1* \sqrt{2} + (\sqrt{2} ) ^{2} } = \sqrt{(1+ \sqrt{2}) ^{2}} =1+ \sqrt{2}$

8 0

2 years ago

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The first term of an arithmetic sequence is -2. The eighth term of the sequence is 26. What is the common difference of the arit

andreev551 [17]

Answer:

d = 4

Step-by-step explanation:

The n th term of an arithmetic sequence is

$a_{n}$ = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Given a₁ = - 2 and a₈ = 26 , then

- 2 + 7d = 26 ( add 2 to both sides (

7d = 28 ( divide both sides by 7 )

d = 4

8 0

3 years ago

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NEED HELP NOW 10 POINTS WILL MARK BRAINLIEST ANSWER PLZ ANSWER ALL 5 PHOTOS!!!!!

CaHeK987 [17]

Where are the photos?

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2 years ago

PLEASE HELP ME SOLVE THIS Find all x-values for which f ( x ) = 2 for the function below.

alisha [4.7K]

Answer:

Step-by-step explanation:

First let us get the equation of the coordinates

y-y0 = m(x-x0)

Using the coordinates ( - 3, 2 ), ( - 1, 0 )

m = 0-2/-1-(-3)

m = -2/2

m = -1

Substitute m = -1 and (-1, 0) into the formula

y - 0 = -1(x+1)

y = -x-1

f(x) = -x-1

Since f(x) = 2

2 = -x-1

-x = 2+1

-x = 3

x = -3

Hence the value of x is -3

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2 years ago

Two numbers are randomly selected on a number line numbered 1 through 9. The same number can be chosen twice. What is the probab

Effectus [21]

(3)/(8+7+6+5+4+3+2+1)(no repitition)
=3/36
=1/12

4 0

3 years ago

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