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3 years ago

A dialonal cross section of a sphere produces which two dimesional shape?

Mathematics

1 answer:

stellarik [79]3 years ago

6 0

Regardless of how the sphere<span> is cut, it will form a circle</span>

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Find the volume of the following

ki77a [65]

Finding the volume of this will mean that we'll have to know the formula. The formula for finding the volume of a prism is L x W x H.
L- Lenght
W - Width
H - Height.

So Volume is going to be equalled to 6 x 5 x 4 = 120 cm cubed

6 0

3 years ago

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What is 4xy - 5y² - 3x² from 5x + 3y² - xy ?

andre [41]

Refer the attachment for your answer

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2 years ago

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Simplify the expression 2x+5-x

Len [333]

2x + 5 - x simplified would be...

x + 5

8 0

3 years ago

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What are the real zeroes of x3 + 6 x2 – 9x - 54?

o-na [289]

Answer:

Option B 3,-3,-6 is correct.

Step-by-step explanation:

We need to find real zeroes of $x^3+6x^2-9x-54$

Solving

$x^3+6x^2-9x-54\\=(x^3+6x^2)+(-9x-54)$

Taking x^2 common from first 2 terms and -9 from last two terms we get

$=(x^3+6x^2)+(-9x-54)\\=x^2(x+6)-9(x+6)\\$

Taking (x+6) common

$(x+6)(x^2-9)\\$

x^2-9 can be solved using formula a^2-b^2 = (a+b)(a-b)

$=(x+6)((x)^2-(3)^2)\\=(x+6)(x+3)(x-3)$

Putting it equal to zero,

$(x+6)(x+3)(x-3) =0\\x+6 =0, x+3=0\,\, and\,\, x-3=0\\x=-6, x=-3\,\, and\,\, x=3$

So, Option B 3,-3,-6 is correct.

7 0

2 years ago

The formula for electrical power (P, in watts) is where V is the voltage in volts and R is the resistance in ohms. For a particu

bazaltina [42]

Answer: 4 V

Step-by-step explanation:

The formula for electrical power $P$ is:

$P=\frac{V^{2}}{R}$

Where:

$P=0.5 W$ is the water heater electrical power

$V$ is he water heater voltage

$R=32 \Omega$ is the electrical resistance

Isolating $V$ :

$V=\sqrt{PR}$

$V=\sqrt{(0.5 W)(32 \Omega)}$

Hence:

$V=4 V$

8 0

2 years ago