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Serggg [28]
2 years ago
14

31

Mathematics
1 answer:
Viktor [21]2 years ago
6 0

Answer:

no sure about the answer

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Dmitri wants to cover the top and sides of the box shown with glass tiles that are 3 5 mm square How many tiles does he need 20
Anna35 [415]
Lets split the box in pieces and then add:
top = 20*15 = 300
sidesA = 2*20*9 = 360, is multiplied  by 2 cause there are 2 sides like this
sidesB = 2*9*15 = 270, is multiplied  by 2 cause there are 2 sides like this
so in total we have:
total = 300 + 360 + 270 = 930 cm^2
if we express this quantity in mm^2 we have:
<span>1cm² = 100 mm²</span>total = 930*100 = 93000 mm^2
so if the tiles are 5 mm^2 we need:
total tiles = <span>93000/5 = 18600
we need 18600 tiles of 5 mm^2</span>
8 0
3 years ago
Write the next two terms in the pattern. 11,18,25,32,_,_,
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39, 46 {Pattern: Going up by 7}
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Write a polynomial equation of degree 3 such that two of its roots are 2 and an imaginary number.
vagabundo [1.1K]
X^3 - i(x)^2 - 4x + 4i ....
5 0
3 years ago
Can someone do this for me please???? i need it done fast!!
KIM [24]

Depends on what it is

6 0
3 years ago
45-45-90...find the value of x?
andrey2020 [161]

Answer:

<h2>         x = 19</h2>

Step-by-step explanation:

If the angles of a triangle are 45°, 45° and 90°, the the sides of the triangle are x. x and x√2

x√2 = 19√2   ⇔  x = 19

4 0
3 years ago
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