2 years ago

If Ann correctly factors an expression that is the difference of two perfect squares, her factors could be

Mathematics

1 answer:

Sphinxa [80]2 years ago

3 0

Answer:

1.) ???

2.) (2x+3y)(2x-3y)=4x²-9y²

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3 cos A = 4 sin A find a) cos A b) 3-cot2 A+ cosec2A

Lady_Fox [76]

Answer:

a). cosA = 4/5

b).

$3 - cot {}^{2} a \: + cosec {}^{2} a \: = 0$

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2 years ago

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f(x)=3x^(4)-5x^(3)-5x^(2)+5x+2 The number 3 is an upper bound for the set of roots of this polynomial function True or False

Leona [35]

Answer: TRUE

Step-by-step explanation: The number 3 is an upper bound because use 3 as a multiplyer of each bcoefficient of the polynomial and at each multiple,subtract the next coefficient from it. if all result after subtraction show positive, then the number used is an upper bound. This method is known as the synthetic division.

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2 years ago

The cylinder shown has a volume of 150 cubic inches and its height is equal to its

harina [27]

Answer:

Volume of sphere = 200 in³

Step-by-step explanation:

Given:

Volume of cylinder = 150 in³

Height = Radius

Radius of cylinder = Radius of sphere

Find:

Volume of sphere = ?

Computation:

$Volume\ of\ cylinder = \pi r^2h\\\\Given\ r=h\\\\So, \\\\Volume\ of\ cylinder = \pi r^2r\\\\150 = \pi r^3\\\\$

$Volume\ of\ sphere =\frac{4}{3} \pi r^3\\\\We\ know \ that , \pi r^3 = 150\\\\ Volume\ of\ sphere =\frac{4}{3} \times 150\\\\Volume\ of\ sphere =200$