All categories

3 years ago

1. A piece of steel has a volume of 12 cm3 and a mass of 96g. What is its density?

Mathematics

1 answer:

Troyanec [42]3 years ago

3 0

Answer:

it's density is 8 g /cm³

Step-by-step explanation:

Mass (m) = 96 g

Volume (v) = 12 cm³

Density (d) =?

We know density is defined as mass per unit volume so

d = m/v

= 96 / 12

= 8 g/cm³

Hope it will help :)

Note : if in the question it is said to write in sI system u have to write in kg/m³.

You might be interested in

Solve the equation. X+3.5 = 10 A.X = 13.5 B. X = 7.5 C. X = 6.5 D. X = 30.5

Juliette [100K]

Answer:

the answer is C

Step-by-step explanation:

its making write more so yeah

6 0

3 years ago

Read 2 more answers

The sector of a circle with a 16-centimeter radius has a central angle measure of 45°.

Tresset [83]

A = (45/360)×16^2×pi
A = 32pi

8 0

4 years ago

Please help me with these. These are so hard.

LuckyWell [14K]

$\bf \textit{difference and sum of cubes} \\\\ a^3+b^3 = (a+b)(a^2-ab+b^2) ~\hfill a^3-b^3 = (a-b)(a^2+ab+b^2) \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \boxed{a^6+b^6}\implies a^{2\cdot 3}+b^{2\cdot 3}\implies (a^2)^3+(b^2)^3 \\[2em] [a^2+b^2] [(a^2)^2-a^2b^2+(b^2)^2]\implies \boxed{(a^2+b^2)(a^4-a^2b^2+b^4)}$

about the second one... well, is a "fait accompli" that using the pythagorean theorem, if x = 8 and y = 5, the hypotenuse must be √(8² + 5²) = √(89), which is neither of those choices.

5, 8, 13 are no dice, namely 5² + 8² ≠ 13

25, 64, 17 is are no dice too, because 25² + 17² ≠ 64²

however, 5,12 and 13 are indeed a pythagorean triple

also is 39, 80, 89.

when looking for a pythagorean triple, recall that c² = a² + b².

so the longest leg is the sum of the square of the small ones.

so what you'd do is, check the small legs, square them, add them up, if they're indeed a pythagorean triple, they "must" add up to the longest leg.

4 0

3 years ago

In the figure, angle B measures 44°, angle A measures 62°, and angle E measures 50°.

Gre4nikov [31]

We don't need the figure
angle b = 44 degrees
angle a = 62 degrees
angle e = 50 degrees
angle f = unknown
we know that
angle a + b + e + f = 180 degrees
50 + 44 + 62 + f =180 degrees
f= 180-50-44-62
but here there is only one blank so we have to add 44 and 62 to make one number that is 106
therefore, f = 180-50-106
if you further want to solve it angle f is 24

3 0

3 years ago

MARKING BRAINLIEST!! For what value of x is the figure below a rectangle?

Vedmedyk [2.9K]

<h2>Answer: Yes it is a rectangle I don't know if that's all you want to know</h2>

5 0

3 years ago