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3 years ago

7

Chris spent a total of $53.07 buying art supplies. He bought a package of drawing paper for $24.75, and bought 12 brushes. What

was the price per brush?

1 answer:

Sergeeva-Olga [200]3 years ago

3 0

2.36 is the price per brush

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If -3 is a zero of f(x)= x^3+x^2-21x-45, find all of its zeros and their multiplicities

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Answer: the zeros are -3, -3 and 5

Multiplicity is 2

Step-by-step explanation:

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Simplified version of -12x + 3y = -3?

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14 80 tiles of side 30cm were used to cover a counter top. Calculate the area of the counter top in square metres.

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Answer:

Step-by-step explanation:

1,480 is a lot of tiles. Did you mean 80 tiles?

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3 years ago

If x is an even integer and y is an odd integer than x + y is a rational number. A) Always True B) Sometimes True C) Usually Tru

Katyanochek1 [597]

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7 0

3 years ago

Rationalise the denominator.

grin007 [14]

Let's see what to do buddy...

_________________________________

To do this, we have to multiply the face and denominator of the fraction by the denominator conjunction, which is :

$(5 -\sqrt{2})$

°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°

Reminder :

$(a + b)(a - b) = {a}^{2} - {b}^{2} \\$

°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°

So we have :

$\frac{1}{ 5-\sqrt{2} } \times \frac{ 5+\sqrt{2} }{ 5 +\sqrt{2} } = \frac{1 \times ( 5 +\sqrt{2}) }{(5- \sqrt{2} )( 5 +\sqrt{2}) } = \\$

The other is in the photo.

_________________________________

And we're done.

Thanks for watching buddy good luck.

♥️♥️♥️♥️♥️

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3 years ago