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4 years ago

What are the characteristics of x^2-x+1

Mathematics

1 answer:

SSSSS [86.1K]4 years ago

7 0

It is a quadratic equation, if it is equal to zero. It is not factor able.

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The average density of the material in intergalactic space is approximately 2.5 × 10–27 kg/m3. what is the volume of a lead samp

Lesechka [4]

Answer:

e. $1.8\times 10^{-6}m^3$

Step-by-step explanation:

It is given that,

The density of intergalactic space material is $2.5 \times 10^{-27}$ kg per cubic meter.

And the volume of intergalactic space material is $8.0\times 10^{24} m^3$

So the mass of that much intergalactic space material is,

$m= \rho\times v$ , where 'm' is the mass, and 'v' is the volume.

Putting the values we get,

$m=2.5 \times 10^{-27}\times 8.0 \times 10^{24}$

$m=20\times 10^{(-27+24)}=20\times 10^{-3} kg$

It is also given that the mass of lead is the same as the mass of the intergalactic space material. Therefore, the mass of lead is $20 \times 10^{-3}=2 \times 10^{-2}kg$

So the volume of lead is,

$v=\frac{m}{\rho} =\frac{2 \times 10^{-2}}{11300} = 0.00000177 m^3$

$v=1.77 \times 10^{-6}=1.8\times 10^{-6}m^3$

So the volume of lead is $v=1.8\times 10^{-6}m^3$ .

3 0

3 years ago

a Can of soup has a diameter of 2.5 inches and a height of 4 inches. how much metal is needed to make the can? round your answe

Ratling [72]

First the 2 bases have surface area pi*1.25^2*2

Then the side

2.5pi*4=10pi

total of 9.817+31.415

=41.232

This approximation could be further round down for this problem to 41.2

Which makes choice C the correct choice.

7 0

3 years ago

What is b divided by b% of b? PLS HELP

34kurt

Answer:

b / (b/100×b)

= b / (b/50

= 50b/b

= 50

Step-by-step explanation:

brainliest plz

5 0

2 years ago

Read 2 more answers

(PLEASE HELP NEED ANSWER ASAP)

Marizza181 [45]

Answer:

I think it is C i could be wrong

Step-by-step explanation:

4 0

3 years ago

Complete the square for x2 - 4x +<br> Then write the resulting expression as a<br> binomial squared.

alekssr [168]

Answer:

x(x-4)

Step-by-step explanation:

4 0

3 years ago