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matrenka [14]
3 years ago
12

(8√2 - 5) (9√5 +6√10) Simplify

Mathematics
1 answer:
salantis [7]3 years ago
5 0

Answer:

42 (square root>) 10 + 51 (square root>) 5

Step-by-step explanation:

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Does anyone know this ?
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Answer:

Always

Step-by-step explanation:

If the irrational parts of the numbers have zero sum, the sum is rational. If not, the sum is irrational. It is true, for example, for 2 7, 3. It is false, for example, for3+2 5,−2 5 .

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Step-by-step explanation:

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3 years ago
In the number 707B47.B is a prime number.If the number is rounder off to 3sf its value is 708000 what is the biggest value of B
zhenek [66]
<h3>Answer:  7</h3>

The list of single digit primes is {2,3,5,7}. The largest prime is 7, so B = 7 is the largest possible value.

Also note how 707,747 rounds to 708,000 when rounding to 3 significant figures.

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3 years ago
Complete the equation of the line through (-9 -9) and (-6 0)
Katena32 [7]

Answer:

y = 3x + 18

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (- 9, - 9) and (x₂, y₂ ) = (- 6, 0)

m = \frac{0+9}{-6+9} = \frac{9}{3} = 3, thus

y = 3x + c ← is the partial equation of the line

To find c substitute either of the 2 points into the partial equation

Using (- 6, 0), then

0 = - 18 + c ⇒ c = 0 + 18 = 18

y = 3x + 18 ← equation of line

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3 years ago
Chetan has an average of 77on his first 3 math tests. He wants an average of 80. What equation can be used to find s, the score
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The answer is 89 percent because (80-77)x3=9 so 89

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