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Anton [14]
3 years ago
9

The unit rate of 405 rotations in 5 minutes

Mathematics
1 answer:
Gre4nikov [31]3 years ago
6 0
405/5 divide both the top and bottom by 5 it will equal 81 per minute

answer:81 per minute
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The denarius was a unit of currency in ancient rome. Suppose it costs the roman government 101010 denarii per day to support 444
givi [52]

<u>the correct question is</u>

The denarius was a unit of currency in ancient rome. Suppose it costs the roman government 10 denarii per day to support 4 legionaries and 4 archers. It only costs 5 denarii per day to support 2 legionaries and 2 archers. Use a system of linear equations in two variables. Can we solve for a unique cost for each soldier?

Let

x-------> the cost to support a legionary per day

y-------> the cost to support an archer per day

we know that

4x+4y=10 ---------> equation 1

2x+2y=5 ---------> equation 2

If you multiply equation 1 by 2

2*(2x+2y)=2*5-----------> 4x+4y=10

so

equation 1 and equation 2 are the same

The system has infinite solutions-------> Is a consistent dependent system

therefore

<u>the answer is</u>

We cannot solve for a unique cost for each soldier, because there are infinite solutions.

5 0
3 years ago
Y = (1/4)x^2 - (1/2)lnx..over the interval (1, 7e) ...what is the arc length ?
xenn [34]
So, f[x] = 1/4x^2 - 1/2Ln(x) 
<span>thus f'[x] = 1/4*2x - 1/2*(1/x) = x/2 - 1/2x </span>
<span>thus f'[x]^2 = (x^2)/4 - 2*(x/2)*(1/2x) + 1/(4x^2) = (x^2)/4 - 1/2 + 1/(4x^2) </span>
<span>thus f'[x]^2 + 1 = (x^2)/4 + 1/2 + 1/(4x^2) = (x/2 + 1/2x)^2 </span>
<span>thus Sqrt[...] = (x/2 + 1/2x) </span>
6 0
3 years ago
Can someone help me pls pls help with this question
True [87]

Answer:

D.

Step-by-step explanation:

The mean is 11,000

8 0
3 years ago
Two shops sell the same brand of baked beans but in different sizes of tin.
serg [7]

Answer:

Price in shop B is cheaper by 12 p per kg

Step-by-step explanation:

<u>Shop A</u>

  • £5.65/5= £1.13 = 113 p

<u>Shop B</u>

  • £2.02/2= £1.01= 101 p

Price in shop B is cheaper by 12 p per kg

5 0
3 years ago
Label the figure using the drawing tools. Type the equation below.
Masteriza [31]
The answer would be
4
5
6
Yes
8 0
3 years ago
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