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Alex Ar [27]
3 years ago
15

Can someone help me with this question :)

Mathematics
1 answer:
Lesechka [4]3 years ago
5 0

Answer:

i dont understand

Step-by-step explanation:

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the radius of a gold atom is 1.35 angstroms. how many gold atoms would it take to line up a span of 8.5 mm?
serg [7]
The angstrom<span>, also known as the </span>angstrom<span> unit, is a measure of displacement equal to 0.0000000001 meter (10 -10 m). It would be helpful to convert the units of angstrom to mm. We do as follows:

diameter = 2 x 1.35 x10^ -10 m ( 1000 mm / 1 m ) = 2.7 x 10^-10 mm / atom

Number of gold atoms = 8.5 mm / </span>2.7 x 10^-10 mm / atom = 31481481481.481 atoms
6 0
3 years ago
Read 2 more answers
You place a cup of 200oF coffee on a table in a room that is 67oF, and 10 minutes later, it is 195oF. Approximately how long wil
Nikolay [14]
30 minutes i think is the answer?
8 0
3 years ago
At a museum, the admission price for children is $9 and the admission price for adults is $18. The total amount the museum colle
anygoal [31]

Answer:

x + y = 330  and 9x + 16y = 4650

Step-by-step explanation:

At a museum, the admission price for children is $9 and the admission price for adults is $18. The total amount the museum collects in admissions for the day is $4959. The total number of visitors is 319.

x = number of children

y = number of adults

x + y = 330

9x + 16y = 4650

4 0
3 years ago
If four times the sum of a number and 3 is divided by 2, the quotient is 0: find the number
AveGali [126]

The other number is -3.

Step-by-step explanation:

Step 1; First we develop formulae for the given information. A number is added with 3 and the resulting sum is multiplied by 4. This number is then divided by 2 and the quotient is 0. Assume the unknown number is x, then the given information is as follows

The quotient of \frac{4(x+3)}{2} is 0. So \frac{4(x+3)}{2} = 0.

Step 2; Now we solve the above equation. The denominator is taken to the RHS and the RHS remains zero.

\frac{4(x+3)}{2} = 0, 4(x+3)= 0, 4x+ 12 = 0, 4x = -12, x = \frac{-12}{4} = -3.

So the other number is -3.

3 0
3 years ago
2). Bill has twice as many candies as Fred. Tim has 3 fewer than 3 times as many candles as Fred.
sasho [114]

Step-by-step explanation:

<h2>Answer:-</h2>

\tt{Let \ the \ candies \ taken \ by \ Fred \ be \ x.}

Now, let's Solve!

So, according to Question,

Bill = 2x

Tim = 3x-3

Total Candies = 177.

\bf{x+2x+3x-3=177}

Totalling x,

\bf{6x-3=177}

\bf{6x=177+3}

\bf{6x = 180}

\boxed{\sf{x = 30}}

So, Fred has 30 candies.

Bill's Candies = 2×30 = 60 Candies

Tim's Candies = 3×30-3 = 90-3 = 87 Candies.

Hope it helps :)

7 0
3 years ago
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