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3 years ago

Which object will sink in freshwater, which has a density of 1.0 g/cm3?

Mathematics

2 answers:

natita [175]3 years ago

4 0

Hello,

all object having a mass volumic >1 kg/dm^3 will sink in water which has a mass volumic of 1kg/dm^3 .

coldgirl [10]3 years ago

3 0

All object having a mass volumic >1 kg/dm^3 will sink in water which has a mass volumic of 1kg/dm^3
hope this helps!!!

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A line and two points are guaranteed to be coplanar if

kicyunya [14]

The points lie on the line, I believe, since they're part of it.

5 0

3 years ago

Which of the following is a square root of 3(cos(4pi/9)+i sin(4pi/9))

Margaret [11]

Answer:

— 4√16(cos(4π3)+isin(4π3))=2(cos(−π6)+isin(−π6))=√3−i. Explanation: De Moivre's formula tells us that: (cosθ+isinθ)n=cosnθ+isinnθ.

Step-by-step explanation:

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3 years ago

What is AE?<br> Enter your answer in the box?

Nataly [62]

Answer:

AE = 18 units

Step-by-step explanation:

Δ AEB and Δ DEC are similar , then corresponding sides are in proportion, that is

$\frac{AE}{DE}$ = $\frac{AB}{DC}$ , substitute values

$\frac{2x+4}{x+8}$ = $\frac{12}{10}$ ( cross- multiply )

10(2x + 4) = 12(x + 8) ← distribute parenthesis on both sides

20x + 40 = 12x + 96 ( subtract 12x from both sides )

8x + 40 = 96 ( subtract 40 from both sides )

8x = 56 ( divide both sides by 8 )

x = 7

Then

AE = 2x + 4 = 2(7) + 4 = 14 + 4 = 18 units

5 0

3 years ago

Nicki has 30 pencils. for every green pencil, she has 5 purple pencils. how many pencils of of each color could she have

Hatshy [7]

Answer:

Step-by-step explanation:

(1) P = 5G

(2) G + P = 30

Substituting (1) into (2) gives:

G + 5G = 30

6G = 30

G =5

So there are 5 green pencils.

Now using that in (1) gives us P = 5 x 5 = 25

So there are 5 green pencils and 25 purple pencils.

6 0

3 years ago

Divide these polynomials.

Kryger [21]

( $6x^{2} + 14 x^{2} + 6x - 2$ ) ÷ ( $2x + 2$ )
= $3x^{2} + 4x - 1$

3 0

3 years ago