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4 years ago

Subtract and simplify: (y^2 - 7y - 5) - (-3y^2 + 3y - 4)

Mathematics

2 answers:

insens350 [35]4 years ago

6 0

It is C. It just is.

lara31 [8.8K]4 years ago

6 0

C is the answer. y^2+3y^2-7y-3y -5+4. Combine terms

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7 1/2 sticks of butter are needed to make 5 cakes. How much butter is needed to make one cake?

LenaWriter [7]

Answer:

1 1/2

Step-by-step explanation:

because when you divide 7.5 by 5 you get 1.5

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3 years ago

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Please help need to finish ASAP

jok3333 [9.3K]

Look at the picture.

The triangle ADC and the triangle CDB are similar.

Therefore corresponding sides are all in the same proportion:

$\dfrac{y}{4}=\dfrac{12}{y}\ \ \ \ |cross\ multiply\\\\y^2=48\to y=\sqrt{48}\\\\y=\sqrt{16\cdot3}\\\\y=\sqrt{16}\cdot\sqrt3\\\\y=4\sqrt3$

Answer: 4√3

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3 years ago

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irinina [24]

Step-by-step explanation:

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$= \sin {}^{2} (x)$

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$\frac{1}{ \frac{ \cos {}^{2} (x) }{ \sin { }^{2} (x) } } - \frac{1}{ \cos {}^{2} (x) }$

$\frac{1}{ \cot {}^{2} (x) } - \frac{ \csc {}^{2} (x) {} }{ \cot {}^{2} (x) }$

$\frac{ - \cot {}^{2} (x) }{ \cot {}^{2} (x) }$

$- 1$

$\sec {}^{2} ( \frac{\pi}{2} - x ) )( \sin {}^{2} (x) - \sin {}^{4} (x))$

$( \csc {}^{2} (x) )( \sin {}^{2} (x) - \sin {}^{4} (x )$

$\csc {}^{2} (x) ( \frac{1}{ \csc {}^{2} (x) } - \frac{1}{ \csc {}^{4} (x) } )$

$1 - \frac{1}{ \csc {}^{2} (x) }$

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2 years ago

20 POINT'S!!!!!!!!!<br> HELP!!!

zalisa [80]

Well, the base and height would still be applicable (essentially, base is just width and height is just, uh, height,)

So basically the area of one triangle is 0.5(7*6), which is 21

The area of one triangle is option c., 21.

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3 years ago

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The value of a algebraic expression y-1 for y = -5is

kifflom [539]

The Answer Is Probably, "-6" .

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3 years ago