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IrinaK [193]
3 years ago
9

Answer true or false for 1-10 (picture above)

Mathematics
1 answer:
Softa [21]3 years ago
3 0

\sqrt{a\cdot b}=\sqrt{a}\cdot\sqrt{b}\\\\\sqrt{a+b}\leq\sqrt{a}+\sqrt{b}\\\\\sqrt{a-b}\geq\sqrt{a}-\sqrt{b}\\----------------------\\1)\ \sqrt{72}=\sqrt{9\cdot8}=\sqrt{9}\cdot\sqrt{8}\qquad TRUE\\\\2)\ \sqrt{13-5}=\sqrt{13}-\sqrt5\qquad FALSE\\\\3)\ \sqrt{9\cdot10}=\sqrt9+\sqrt{10}\qquad FALSE\\\\4)\ \sqrt{18bx}=\sqrt{18}\cdot\sqrt{b}\cdot\sqrt{x}\qquad TRUE\ if\ b\geq0\ and\ x\geq0\\\\5)\ \sqrt{8\cdot12}=\sqrt8\cdot\sqrt{12}\qquad TRUE\\\\6)\ \sqrt{m+x}=\sqrt{m}+\sqrt{x}\qquad FALSE

7)\ \sqrt{100+64}=\sqrt{100}+\sqrt{64}\qquad FALSE\\\\8)\ \sqrt{30}=\sqrt{5\cdot6}=\sqrt5\cdot\sqrt6\qquad TRUE\\\\9)\ \sqrt{44}=\sqrt{22+22}=\sqrt{22}+\sqrt{22}\qquad FALSE\\\\10)\ \sqrt{10\cdot10}=\sqrt{10}\cdot\sqrt{10}\qquad TRUE

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just olya [345]

Answer:

C) 169 square units

Step-by-step explanation:

The formula for the area of a square is A = a² where a is one side of the square.

To find the length of one side of the square, use the distance formula for two points. I will use the points (-8, 3) and (4, 8).

d = √((x₂ - x₁)² + (y₂ - y₁)²)

d = √((4 - (-8)² + (8 - 3)²)

d = √((12)² + (5)²)

d = √(144 + 25)

d = √(169)

d = 13

Now since all of the sides of the square equal that value (13), plug it into the area formula.

Area = a²

Area = 13²

Area = 169.

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3 years ago
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Murrr4er [49]

Answer:

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Step-by-step explanation:

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3 years ago
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Sophie [7]

Answer:

e

Step-by-step explanation:

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For this to work, whatever the white wax is, it needs to be 3 times as more as 5.

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If a football player runs 5/6 of a mile every 3/4th of a hour, that means every 1/4th a hour he runs 1.5/6th of a mile.

That means every 15 minutes the football player runs .2 of a mile. That means that every hour he runs :

0.8 of a mile!

3 0
3 years ago
A coin is tossed, and a standard number cube is rolled. What is the probability that the coin shows heads and the number cube sh
Ainat [17]
So,

Since this is independent probability, the probability of the event above occurring is:
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<u />\frac{3}{6}\ or\  \frac{1}{2}

Plug it into the equation.
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