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2 years ago

What is the missing part

Mathematics

2 answers:

mihalych1998 [28]2 years ago

5 0

Answer: the missing part is 45

suppose: the missing part is x

we use Thales theorem:

$\frac{x}{18}=\frac{20}{8}\\\\=> x = \frac{20.18}{8}=45$

Step-by-step explanation:

Roman55 [17]2 years ago

4 0

use thales theorem to solve this question

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X^2 - y^2 = 100

luda_lava [24]

Answer:

Step-by-step explanation:

Let's start by rewriting the second equation in terms of "x":

$x+y=5$

Subtract y from both sides:

$x=5-y$

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$(5-y)^2-y^2=100$

Note that:

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$25-10y=100$

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Divide both sides by -10

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Now, substitute this value back into either of the equations to solve for x.

$x+y=5\\x-\frac{15}{2}=5\\$

Add 15/2 to both sides:

$x=5+\frac{15}{2}\\x=\frac{10}{2}+\frac{15}{2}\\x=\frac{25}{2}$

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2 years ago

How do I evaluate 8^7 / 8^7?

morpeh [17]

Answer:

The final result is 1

Step-by-step explanation:

Remember the following:

$\frac{x^{m}}{x^{n}} = x^{m-n} \\$

And that x^0= 1

We have: 8^7 / 8^7= 8 ^ (7-7)=8^0=1

3 0

3 years ago

What is the missing part​

What is the missing part