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tatiyna
3 years ago
13

Five friends are standing in a circle and playing a game where they toss a ball of yarn to one another. If each person is connec

ted by the yarn to each other person only once, how many lines of yarn will connect the group?
Mathematics
1 answer:
MissTica3 years ago
3 0
10 lines will connect them
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Find a and b to make the following matrices equal.
podryga [215]
We need the following to be true
a+2b = -a
a+4 = 2a - 3b

Let's look at the first equation.
a + 2b = -a
Subtract both sides by a
2b = -2a
b = -a

Substitute b= -a into the second equation
a+4 = 2a + 3a
a + 4 = 5a
4a = 4
a = 1

Just take the negative of that and you get the value of b.
b = -1

Your solution is a=1 and b = -1.

Have an awesome day! :)
4 0
3 years ago
Read 2 more answers
Help me on this plz and thank you
Ghella [55]

By solving for x you get x=6

3 0
3 years ago
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You saved $1,240 and your sister agrees to put it in a savings account at her credit union so you can earn interest. You earned
leva [86]

The amount after 2 years is $2,295.

Given that,

  • The invested amount is $1,240.
  • The rate of interest is 8%.
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Based on the above information, the amount after 2 years is

Future value = Present value ×(1 + rate of interest)^number of years

= $1,240 × (1 + 0.08)^8

= $1,240 × 1.08^8

= $2,295

Therefore we can conclude that the amount after 2 years is $2,295.

Learn more: brainly.com/question/18051939

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2 years ago
Select the correct difference
Harrizon [31]
<span>B. 2d^2+6d-7. Should be the correct answer.</span>
8 0
3 years ago
Carrie wanted to make pudding for dessert for her family. However, she couldn't find a recipe that would make 4 servings. She de
Naddika [18.5K]
All you have to do is make 1 into a fraction 4/4+1/4 makes the 8 servings
find and equivilent fraction so 8/8+2/8= 8 servings half it 4/8+1/8= 4 servings so half a cup and an eighth of a cup or 5/8 of a cup hope this helped you have a great day!!
5 0
3 years ago
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