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exis [7]
3 years ago
10

The mass of 5 m' of copper is 44 800 kg. Work out the density of copper.

Mathematics
1 answer:
solniwko [45]3 years ago
8 0
Here bro this should help

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Select all of the rational numbers from the list.
topjm [15]

Step-by-step explanation:

Rational numbers

7/8, square root of 25

6 0
2 years ago
If you place a 10-foot ladder against the top of a 6-foot building, how many feet will the bottom of the ladder be from the bott
Anika [276]

Answer: 8 feet

Step-by-step explanation:

Draw a right triangle and label the sides using the given information. (Drawing below) Use pythagorean theorem to find the missing length:

a^2 + b^2 = c^2

(building)^2 + (missing piece)^2 = (ladder)^2

6^2 + x^2 = 10^2

36 + x^2 = 100. subtract 36

x^2 = 64. square root of both sides

x = 8

6 0
3 years ago
Steven earns extra money babysitting. he charges $20.25 for 3 hours and $40.50 for 6 hours.
il63 [147K]
Y=6.75x
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6 0
2 years ago
Which is the net of this solid? A pentagonal pyramid is shown. A net is shown with a square in the middle and 4 identical triang
Neko [114]

Answer: Choice B

A net is shown with a pentagon in the middle and 5 identical triangles on the 5 sides of the pentagon

The pentagon forms the base of the pentagonal pyramid. Each lateral side is a triangle that meets at the very top of the pyramid. The base stays on the floor while the sides are folded up.

---------------------------

There are other possible net configurations to form a pentagonal pyramid, but the other answer choices do not make a pentagonal pyramid.

  • Choice A produces a square pyramid.
  • Choice C makes a triangular pyramid (aka tetrahedron).
  • Choice D makes a hexagonal pyramid.

So we can rule choices A, C and D out.

4 0
3 years ago
This is a bonus question
Elena L [17]

Answer:

10,500

Step-by-step explanation:

See this as 2 rectangles: a box of water (28cm), and another box with the height you want (35cm)

Area of Rectangle = lwh

For the water;

50 x 30 x 28= 42000

As for the needed volume:

50 x 30 x 35 = 52500

To find how much more water, subtract the smaller volume from bigger volume.

10500 should be the final answer

3 0
2 years ago
Read 2 more answers
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