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3 years ago

The density of pure solid copper is 8.94 g/mL. What volume does 5 kg of copper occupy. Please help

1 answer:

5 0

Density= Mass divided by Volume, but you're trying to find Volume so you apply Algebra and get Volume= Mass divided by Volume.

Volume= 0.5592841163 [kg/m (power to the 3)]

You should round it up

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Find 63% of 77. a. 0.485 b. 48.5 c.0.818 d.81.8

8_murik_8 [283]

Answer:

b) 48.5

Step-by-step explanation:

63%= 0.63*77= 48.5

8 0

3 years ago

A point on the terminal side of an acute angle in standard position is (1, 2 √2). Find the cosine value of this angle.

kozerog [31]

Answer:

$cos\theta=1/3$

Step-by-step explanation:

The point at the terminal side of an acute angle is given by $(1, 2\sqrt{2} )$ .

That is,

$x = 1$ and $y= 2\sqrt{2}$ .

Let r be the length of line segment drawn from the origin to the point and is given by the formula:

$r = \sqrt{x^{2} + y^{2}}$

Substituting the values of x and y into r,

$r = \sqrt{1^{2} + (2\sqrt{2} )^{2}}$

$r = \sqrt{1 + 8}$

$r = \sqrt{9}$

Thus, $r=3$

Also, $cos\theta$ is given by:

$cos\theta = x/r\\$

Substituting values of x and r,

$cos\theta = 1/3\\$

4 0

3 years ago

aleka has a box for keepsakes that has a volume of 576 cubic inches the length of the box is 12 in and the width is 8 in what is

Vikki [24]

We know that
volume of the box=length*width*height
V=L*W*H----> H=V/[L*W]
V=576 in³
L=12 in
W=8 in
so
H=576/[12*8]----> H=6 in

the answer is
the height of the box is 6 in

5 0

3 years ago

How to solve (-6y^-3z^-3)(-1/2y^-1z)

Oksana_A [137]

Answer:

__________

y ^4 z ^2

Step-by-step explanation:

5 0

3 years ago

For a quadratic function, which characteristics of its graph is equivalent to the zero of the function? a) y-intercept b) maximu

Sonja [21]

Answer:

d) x-intercept

Step-by-step explanation:

The zeros of a function are the values of x that make y = 0.

Thus, they are the points where the graph crosses the x-axis, that is, the x-intercepts.

a) is wrong. the y-intercept is simply the value of y when x = 0.

b) and c) are wrong. A quadratic can have only one maximum or one minimum; it can't have both. And they are not zeros except in the special case of y = ±ax².

The diagram below is the graph of y = x² + 3x - 46. It shows the zeros at x = -23 and x = 20. The minimum and the y-intercept are not zeros of the function.

3 0

3 years ago