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Zielflug [23.3K]
3 years ago
11

For a scientific Experiment, A physicist must make sure that the temperature of a metal at 0°C get to no colder then -80°C. the

physicist changes the metals temperature at a steady rate of -4°C per hour.for how long can the physicist change the temperature
Mathematics
1 answer:
shepuryov [24]3 years ago
8 0
80 divided by 4=20. ANSWER is 20 hours
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How many solutions does this linear system have?
vagabundo [1.1K]
It is no solution, bc the answer is (0,0)
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What is the sum of the geometric series 2^0 + 2^1 + 2^2 + 2^3 + 2^3 + 2^4 + … + 2^9?
mars1129 [50]
The nth term is
an=a1(r)^(n-1)
an=1(2)^(n-1)
a1=1
r=2

the sum of a geometric seequence is
S_{n}=\frac{a_{1}(1-r^{n})}{1-r}
a1=1
r=2
we want to find S_{10} (since we minus 1, the highest exponet is 9 so add 1 to make it correct)

S_{10}=\frac{1(1-2^{10})}{1-2}
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S_{10}=1023

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3 years ago
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54 divided by 1200 remainder as a fraction quick
BaLLatris [955]

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How do u solve two points using the distance formula?
aliya0001 [1]

Step-by-step explanation:

For two points (x₁, y₁) and (x₂, y₂), the distance between them is:

d² = (x₁ − x₂)² + (y₁ − y₂)²

The order of points 1 and 2 don't matter.  You can switch it:

d² = (x₂ − x₁)² + (y₂ − y₁)²

This is basically the Pythagorean theorem for a coordinate system.

Let's do an example.  If you have points (1, 2) and (4, 6), then the distance between them is:

d² = (4 − 1)² + (6 − 2)²

d² = 3² + 4²

d² = 9 + 16

d² = 25

d = 5

If you have points with negative coordinates, remember that subtracting a negative is the same as adding a positive.

For example, the distance between (-1, -2) and (4, 10) is:

d² = (4 − (-1))² + (10 − (-2))²

d² = (4 + 1)² + (10 + 2)²

d² = 5² + 12²

d² = 25 + 144

d² = 169

d = 13

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3 years ago
What fraction of 45 is 20
iogann1982 [59]

Answer:

2.25×20=45

..............

8 0
3 years ago
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