3 years ago

If two segments from the same exterior point are tangent to the circle then the two segment are congruent

Mathematics

1 answer:

Dimas [21]3 years ago

3 0

This seems like a true or false question this question is true because they haven't changed in length or size at all

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What is 37/50 as a decimal

dexar [7]

37/50 as a decimal is: 0.74
To get 37/50 converted to decimal, you simply divide 37 by 50.

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3 years ago

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Prove that root 7 is irrational by the method of contradiction

Alchen [17]

Let assume that $\sqrt7$ is a rational number. Therefore it can be expressed as a fraction $\dfrac{a}{b}$ where $a,b\in\mathbb{Z}$ and $\text{gcd}(a,b)=1$ .

$\sqrt7=\dfrac{a}{b}\\\\7=\dfrac{a^2}{b^2}\\\\a^2=7b^2$

This means that $a^2$ is divisible by 7, and therefore also $a$ is divisible by 7.

So, $a=7k$ where $k\in\mathbb{Z}$

$(7k)^2=7b^2\\\\49k^2=7b^2\\\\7k^2=b^2$

Analogically to $a^2=7b^2$ ------- $b^2$ is divisible by 7 and therefore so is $b$ .

But if both numbers $a$ and $b$ are divisible by 7, then $\text{gcd}(a,b)=7$ which contradicts our earlier assumption that $\text{gcd}(a,b)=1$ .

Therefore $\sqrt7$ is an irrational number.

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3 years ago

What is the slope of this graph? 13 −3 3 −13

Lisa [10]

The answer is for that problem is -3

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What is 5/10 + 3/2 = ?

Fittoniya [83]

3/2=1 & 1/2
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3 years ago

Solve for x: − 10x + 4 = − 7x − 14 −7x −14 PLEASE HELP ME!

Elodia [21]

Step-by-step explanation:

-10x + 4 = -7x - 14 - 7x - 14

-10x + 4 = -14x - 28

4x = -32

x = -8.

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