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Nimfa-mama [501]
4 years ago
6

2. Cement has a density of 3.0 g/cm3. You must pour a cement walkway with the

Mathematics
1 answer:
Anon25 [30]4 years ago
7 0

For this case we have to by definition:

d = \frac {M} {V}

Where:

d: It is the density

M: It's the mass

V: It is the volume

According to the data we have to:

d = 3.0 \frac {g} {cm ^ 3}

On the other hand we have that 1 meter is equivalent to 100 centimeters. Thus the measurements of the walkway are:

600 cm long, 100 cm wide and 10 cm thick. Looking for the volume we have:

V = 600 * 100 * 10\\V = 600,000 cm ^ 3

According to the formula we have:

M = d * V\\M = 3.0 \frac {g} {cm ^ 3} * 600,000 cm ^ 3\\M = 1,800,000g

Thus, the mass of the walkway is 1,800,000g

Answer:

1,800,000g

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Kyle and Nadim are on the same space on a board game they are playing. Kyle moves back 2 spaces in one turn and moves back 3 mor
Vesna [10]

The integer -5 represents Kyle’s location relative to Nadim’s location on the game board.

It is given in the question that Kyle and Nadim are on the same space on a board game they are playing. Kyle moves back 2 spaces in one turn and moves back 3 more spaces in his second turn while Nadim remained in the same place.

We have to find the integer that represents Kyle’s location relative to Nadim’s location on the game board.

We usually denote going ahead by the positive sign and the going back by the negative sign.

Hence, Kyle moving back 2 spaces and then again moving back 3 spaces is equal to moving back 5 spaces which will be represented by the integer -5.

To learn more about integer, here:-

brainly.com/question/15276410

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8 0
1 year ago
The diameter of a bicycle wheel is 63 cm. How much distance will it cover in 20revolutions?
alina1380 [7]

Answer:

1256 cm

Step-by-step explanation:

First we must find the perimeter, because the perimeter is equal to 1 revolution.

The perimeter of any circle is Pi(Diameter)

3.14*20

62.8 cm is the perimeter of the bike wheel.

Because the perimeter is basically a revolution, we can multiply 62.8 by 20 to get:

1256 cm

7 0
2 years ago
Which expression is equivalent to (2to the third power) times -5?
Airida [17]

2 to the third power is 2³

so 2 to the third power times -5 is 2³ * (-5)

which on simplification will be 8* (-5) =-40

3 0
3 years ago
(B6/a3) 1/3 simplified form
borishaifa [10]

Answer: \frac{2b}{a^3}

Step-by-step explanation:

8 0
3 years ago
H(t)=t^2+4t+3 what are the zeroes of the function? Write the smaller t first, and then the larger t second
Anuta_ua [19.1K]

Answer:

t = - 3, t = - 1

Step-by-step explanation:

Given

h(t) = t² + 4t + 3

To find the zeros equate h(t) to zero, that is

t² + 4t + 3 = 0

Consider the factors of the constant term (+ 3) which sum to give the coefficient of the t- term

The factors are + 3 and + 1, since

3 × 1 = 3 and 3 + 1 = 4, thus

t² + 4t + 3 = (t + 3)(t + 1) = 0

Equate each factor to 0 and solve for t

t + 3 = 0 ⇒ t = - 3

t + 1 = 0 ⇒ t = - 1

smaller zero is t = - 3

larger zero is t = - 1

5 0
3 years ago
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