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Serjik [45]
4 years ago
10

A certain jewelry store sells customized rings in which three gemstones selected by the customer are set in a straight row along

the band of the ring. if exactly 5 different types of gemstones are available, and if at least two of the gemstones in any given ring must be different, how many different rings are possible?
Mathematics
1 answer:
kotykmax [81]4 years ago
3 0
Let's assume the gemstones are A, B, C, D, E

1. A, B
2. A, C
3. A, D
4. A, E
5. B, C
6. B, D
7. B, E
8. C, D
9. C, E
10. D, E

A: 10 different rings are possible.

Hope this helps. - M
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Can someone please help me​
Butoxors [25]

Answer:

1a. 58/99

1b. 53/90

1c. 29/50

Step-by-step explanation:

let's start with the easiest one

1.(c)

0.58 = 58/100 = 29/50

that is the simplest possible form, as 29 is a prime number and not a factor of 50.

1.(a)

0.585858585858... = 58×0.0101010101010101...

now, we know that 1/"double digit" (like 1/22) mostly produces a repeating pattern with a period length of 2 after the decimal point.

and we find

1/99 = 0.01010101010101...

so, our solution is

58 × 1/99 = 58/99

that is the simplest possible form, as 58 and 99 do not share any factors.

1.(b)

0.5888888888888... = 0.5 + 0.0888888888888... =

= 0.5 + 8×0.01111111111111... = 0.5 + 8×1/10 × 0.1111111111...

we know how to create 0.11111111111... :

1/9 = 0.111111111111111...

so, our solution is

0.5 + 8 × 1/10 × 1/9 = 0.5 + 8/90 = 5/10 + 8/90 =

= 45/90 + 8/90 = 53/90

this is the simplest possible form, as 53 is already a prime number and not a factor of 90.

8 0
2 years ago
JoAnn plans to attend community college for two years. Her expenses will be $1700 each
iris [78.8K]

Answer:

b

Step-by-step explanation:

With the info provided most likely this amount.

6 0
4 years ago
What is the equation of 7/12=blank×1/2
Firlakuza [10]

Answer: x = 1\frac{1}{6}

Step-by-step explanation:

7/12 = 1/2x

Multiply by 2

14/12=x

x = 1 1/6

Hope it helps <3

8 0
4 years ago
Find the midpoint of the line segment joining the points P1 and P2<br>P1=(3,-4); P2=(5,4)
Mrac [35]
A(x_A;\ y_A);\ B(x_B;\ y_B)\\\\midpoint\ AB:\ S_{AB}\left(\frac{x_A+x_B}{2};\ \frac{y_A+y_B}{2}\right)\\\\P_1(3;-4);\ P_2(5;\ 4)\\\\S_{P_1P_2}\left(\frac{3+5}{2};\ \frac{-4+4}{2}\right)\to S_{P_1P_2}\left(\frac{8}{2};\ \frac{0}{2}\right)\to S_{P_1P_2}(4;\ 0)
5 0
4 years ago
Write the Equation of the line in slope intercept form<br> (0, -3), (7.5,0)
makkiz [27]

Answer:

Step-by-step explanation:

First, start off by solving for the slope using this formula:

\frac{y_{2} -y_{1} }{x_{2}-x_{1}  }

Then, plug in the values: \frac{0-(-3)}{7.5-0}

Solve the equation: \frac{3}{7.5}

That's your slope.

Then plug in one of the coordinates given in the problem for x and y and solve this equation:

y=\frac{3}{7.5}x+b

Hope that helped!!! :)

7 0
3 years ago
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