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2 years ago

Help me dawg. I need this

Mathematics

1 answer:

prohojiy [21]2 years ago

8 0

The answer is Choice (A)

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what is the area of a triangle if the base is 7 less than 5 times a number and the height is 3 times the number and eight

Flauer [41]

Area of a triangle is half multiplied by the height multiplied by the base.So multiplying the two together and halfing is shown below

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3 years ago

Hari bought a shirt for Rs 320 and sold it for Rs 365 to Ram calculate his profit or loss

solmaris [256]

Answer:

profit=sp-cp

=365-320

=45#

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2 years ago

SOMEONE PLEASE HELP. Please show me how to do it and what the answer would be thank you.

goblinko [34]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Which of the following is the solution to the equation 4 / 5n = 20?

S_A_V [24]

N=25 because 20 divided by 4 is 5 which is 1/5 of n meaning 5x5 is 25

5 0

3 years ago

One thousand tonnes (1000 t, one t equals 10 cubed kg) of sand contains about a trillion (10 super 12) grains of sand. How many

Phantasy [73]

Answer with Step-by-step explanation:

Since 1 mole of sand will contain Avagadro's Number of sand particles (by definition of 1 mole)

Thus we have

1 mole of sand = $6.022\times 10^{23}$ sand particles

Thus in number of trillion sand particles we have no of trillion sand particles in 12 mole is

$\frac{6.022\times 10^{23}}{10^{12}}=6.022\times 10^{11}$

Now since it is given that mass of 1 trillion sand particles is 1000 tonnes Thus the mass of $6.022\times 10^{11}$ trillion sand particles is

$Mass=1000\times 6.022\times 10^{11}=6.022\times 10^{14}tonnes$

Part 2)

Since it is given that volume of 1 sand particle is $1.0mm^{3}$ thus the volume of 1 mole of sand is volume of $6.022\times 10^{23}$ sand particles

Thus volume of 1 mole is $V=1.00\times 10^{-18}km^{3}\times 6.022\times 10^{23}=6.022\times 10^{5}km^{3}$

Now since the Area of united states is $A=3.6\times 10^{6}mile^{2}=5.8\times 10^{6}km^{2}$

Thus the depth of the sand pile is

$Depth=\frac{Volume}{Area}=\frac{6.022\times 10^5}{5.8\times 10^6}=0.10387km=103.8meters$

4 0

3 years ago