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BabaBlast [244]
3 years ago
7

Expand and simplify (x+3)(x+5)

Mathematics
1 answer:
frosja888 [35]3 years ago
5 0
Distribute
x^2 + 5x+ 3x+ 15
Add like terms
x^2+8x+15
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Write the point-slope form of the equation of the line through the given point with the given slope. through: (2, 2), slope = 3
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Answer:

y-2=3x-6

Step-by-step explanation:

y - y1 = m(x - x1)

y-2=3(x-2)

y-2=3x-6

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A pot is being used to boil off 1 kg of water. The specific energy required to cause the phase change is 2297 kJ/kg. Assuming th
lana66690 [7]

Answer:

It will take 58 seconds

Step-by-step explanation:

If you have 1 kg of water in the jar, half of it will be 0.5 kg.

To vaporize half of the water (0.500 kg) the energy supply needed is

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If the stove is supplying 20 kJ/s, the time its needed is

\frac{1148.5 kJ}{20\frac{KJ}{s} }=57.425 s

It will last at least 58 seconds to vaporize half of the water.

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3 years ago
Help math question please !
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8 0
4 years ago
Please help :,(
erastovalidia [21]
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This is because the z coordinate is -4. So we move down 4 units on the z axis. The z axis is basically a vertical pole planted in the ground, and the xy plane is the flat floor.

It's a bit tricky to visualize so try to imagine that you're in this 3D space personally.

Or you could imagine that something like z = -4 means you are in basement level 4 of a building (say a parking garage) and something like z = 6 means you're on the 6th floor above the ground.

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3 years ago
Convert and explain 28% to decimal and fraction
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