3 years ago

Can someone pls help me

Mathematics

1 answer:

torisob [31]3 years ago

4 0

The correct answer is D .

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A water molecule is made up of 3 atoms. One third of the atoms are oxygen and the remaining atoms are hydrogen. If there are 114

Mashcka [7]

Answer:

228 hydrogen atoms

Step-by-step explanation:

In a water molecule,

1/3rd is oxygen atoms, and

2/3rd (1 - 1/3 = 2/3) is hydrogen atoms

If there are 114 water molecules,

Total number of atoms would be:

3 * 114 = 342 (1 oxygen and 2 hydrogen atoms in 1 water molecule)

Out of these, 2/3rd would be hydrogen atoms, so:

$\frac{2}{3}*342=228$

There would be 228 hydrogen atoms

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4 years ago

A store is having a 25% off sale on all shirts. Select all the ways to calculate the sale price for a shirt that normally costs

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Answer:

Find 25 percent of 24 and subtract from 24

find 25 percent of 24 and multiply by 3

find 75 percent of 24

Step-by-step explanation:

all equal 75 percent of 24

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3 years ago

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Integrate f(x,y,z)=20xz over the region in the first octant (x,y,z≥0) above the parabolic cylinder z=y2 and below the paraboloid

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$\displaystyle\iiint_Vf(x,y,z)\,\mathrm dV=20\int_{x=0}^{x=2}\int_{y=0}^{y=2}\int_{z=y^2}^{z=8-2x^2-y^2} xz\,\mathrm dz\,\mathrm dy\,\mathrm dx=\dfrac{1280}3$

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3 years ago

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the length of a rectangle is 24 units. can the perimeter x of the rectangle be 60 units when its width y is 11 units

S_A_V [24]

24 +24 = 48

11 + 11 = 22

48 +22 = 70

the perimeter cannot be 60 with dimensions of 24 & 11

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4 years ago

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If nick gets out of svhool at 2:25 and has a 15 minute ride home and goes has a 30 minute bick ride then speands 55 minutes doin

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Answer:

4:05 PM / 16:05

Step-by-step explanation:

Time starts at 2:25.

After the ride home (15 minutes), it will be 2:40.

Then, after the bike ride it will be 3:10.

When he's finished with his homework, it will be 4:05.

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3 years ago