3 years ago

Ms. Swanson asked the question how does knowing the fact 6x5 help you find 60x500? can someone help me my teacher wrote this

1 answer:

Vesna [10]3 years ago

4 0

Answer:

YOU DID THAT TEST? samee

Step-by-step explanation:

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lora16 [44]

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garik1379 [7]

The cosine of angle X is

$\cos X=\dfrac{XY}{XZ}=\dfrac{XY}{7.5}$

By the Pythagorean theorem, we have

$XY^2+YZ^2=XZ^2\implies XY=\sqrt{7.5^2-6^2}=4.5$

Then

$\cos X=\dfrac{XY}{XZ}=\dfrac{4.5}{7.5}$

Multiplying numerator and denominator by 2, we get $\dfrac9{15}$ .

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Pachacha [2.7K]

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