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miv72 [106K]
3 years ago
10

A block of concrete is 1m long, 50cm wild and 4cm thick. 1.calculate the volume of the block in cm3 .2.if 1cm has a mass of 2.7g

, find the mass of the block in kg​
Mathematics
1 answer:
Nonamiya [84]3 years ago
7 0

9514 1404 393

Answer:

  • 20,000 cm³
  • 54 kg

Step-by-step explanation:

1 m is 100 cm, so the volume is ...

  V = LWH

  V = (100 cm)(50 cm)(4 cm) = 20,000 cm³ . . . volume

__

The mass is ...

  (20,000 cm³)(2.7 g/cm³) = 54,000 g = 54 kg

The mass of the block is 54 kg.

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Can someone please help me with all of these problems. They are a ton of them and they are due tomorrow. PLEASE AND THANK YOU
Masteriza [31]

15. \frac{x}{5} - g = a

Add "g" on both sides

\frac{x}{5}  = a +g

Multiply 5 on both sides to get x by itself

x = 5(a + g)

x = 5a + 5g


18. a = 3n + 1

Subtract 1 on both sides

a - 1 = 3n

Divide 3 on both sides to get n by itself

\frac{a - 1}{3}  = \frac{a}{3} -\frac{1}{3} = n


21. M = T - R

Add "R" on both sides to get "T" by itself

M + R = T


24. 5p + 9c = p

Subtract "5p" on both sides

9c = p - 5p

9c = -4p

Divide 9 on both sides to get "c" by itself

c = \frac{-4p}{9} or c = \frac{-4}{9} p


27. 4y + 3x = 5

Subtract "4y" on both sides

3x = 5 - 4y

Divide 3 on both sides to get "x" by itself

x = \frac{5-4y}{3}

x = \frac{5}{3} -\frac{4y}{3}

7 0
3 years ago
What is the surface area of a cube with faces that each have an area of 8 cm2? 2 cm2 512 cm2 48 cm2 32 cm2
miskamm [114]
I'm not quite sure, but I believe that the answer is 48 cm^2.
4 0
4 years ago
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Plz helppp meee wallah I swear to god I will mark you as a brainliest and I will give you 20
givi [52]

Answer:

Step-by-step explanation:

Equation for the linear function has been given as,

y = 26 - 4x

For x = 1,

y = 26 - 4(1)

  = 26 - 4

  = 22

For x = 2,

y = 26 - 4(2)

  = 26 - 8

  = 18

For x = 3,

y = 26 - 4(3)

  = 26 - 12

  = 14

For x = 6,

y = 26 - 4(6)

  = 26 - 24

  = 2

Therefore, table for the function will be,

x               y

1              22  

2              18

3              14

6               2

8 0
3 years ago
Who won the race between the two balls of string
motikmotik
The higher one I think
7 0
3 years ago
A circle with radius 4 has a sector with central angle of 8/5pi radians.
Olin [163]

Answer:

(64/5)π units²

Step-by-step explanation:

The area of this sector would be:

Given central angle

------------------------------ *(area of whole circle)

            2π rad

In this case, the area of the sector is:

      (8/5) π rad

------------------------------ * π(4 units)^2

            2π rad

and this reduces to:

(4/5) * π*16 units²      or  (64/5)π units²

8 0
3 years ago
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