3 years ago

Find an expression which represents the difference when (10x−8y) is subtracted from (-4x-9y) in simplest terms.

Mathematics

1 answer:

I am Lyosha [343]3 years ago

4 0

Answer:

-14x - y

Step-by-step explanation:

-4x - 9y - (10x - 8y)

-4x - 9y - 10x + 8y

-14x - y

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3. A ray of light is reflected by three mirrors. What should be

ioda

Answer:

35 degrees

Step-by-step explanation:

The law of reflection states that the angle of reflection equals the angle of incidence, or

${\theta }_{\text{r}}={\theta }_{\text{i}}$

So, if ${\theta }_{\text{r}}=35$

So, Angle of incidence will also be equal to 35 degrees.

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3 years ago

Convert 62 1/4 into decimal form.

fomenos

Answer:

62 1/4 = 62.25

Step-by-step explanation:

Turn the improper fraction into a mixed number then divide as an equation.

62 x 4 = 248

248 + 1 = 249.

Put the 249 over the 4 and divide.

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Answer:

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Step-by-step explanation:

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