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diamong [38]
3 years ago
6

There are 12 kids in this class including you. If every person shakes hands with every other person, how many handshakes will th

ere be all together?
Mathematics
2 answers:
Alborosie3 years ago
6 0
So there are 13 people.
13 times 13 = 169

Hope this helps :D
Monica [59]3 years ago
3 0

Answer: 132 handshakes in total

Step-by-step explanation: 11x12 because one of them will be the one shaking hands with everyone else so he would have gotten 11 hands shaked so everyone would have gotten their hands shaked 11 times

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A circle has a radius of 6 inches and a central angle of 60°. What is the measure of the arc length associated with this angle?
Readme [11.4K]

Answer:

2\pi

Step-by-step explanation:

first you take 60°/360°= 1/6   then you take 1/6 and multiple it by 2\pi and that equals \frac{\pi }{3}   finally take  \frac{\pi }{3}  times the radius (6) and that should equal 2\pi

PLATO USERS #platolivesmatters

6 0
3 years ago
A television with a 5:3 screen shows an image with a ratio of 5:4 which creates a letter boxed image. What percent of the screen
lions [1.4K]

Answer:

C

Step-by-step explanation:

8 0
3 years ago
You are a contractor and charge $65 for a site visit plus an additional $15 per hour for each hour you spend working at the site
tatiyna

Answer:

54.6 hours

Step-by-step explanation:

65x2 is 130 130-950 is 820 then 820 divided by 15 is 54.6 therefore meaning you have to work 54.6 hours to get 950$ you can check this by doing 54.6x15+130, might not be exact because i rounded to the nearest tenth.

Hope this helps!

8 0
3 years ago
Solve for x.<br> 7(1x - 3) = 4(x + 5)
alexandr1967 [171]

Answer:

x = 41/3

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

Step-by-step explanation:

<u>Step 1: Define equation</u>

7(1x - 3) = 4(x + 5)

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Simplify:                                        7(x - 3) = 4(x + 5)
  2. Distribute:                                     7x - 21 = 4x + 20
  3. Subtract 4x on both sides:          3x - 21 = 20
  4. Add 21 on both sides:                  3x = 41
  5. Divide 3 on both sides:                x = 41/3

<u>Step 3: Check</u>

<em>Plug in x to verify it's a solution.</em>

  1. Substitute:                    7(1(41/3) - 3) = 4(41/3 + 5)
  2. Multiply:                        7(41/3 - 3) = 4(41/3 + 5)
  3. Subtract/Add:               7(32/3) = 4(56/3)
  4. Multiply:                        224/3 = 224/3

Here, we see that 224/3 is indeed equivalent to 224/3. ∴ x = 41/3 is a solution to the equation.

And we have our final answer!

6 0
3 years ago
Find two numbers a and b such that a+b=0 and ab=36
PolarNik [594]

Answer:

b = 6i   then a = -6i

b = -6i   then a = 6i

Step-by-step explanation:

a+b=0

ab=36

a = -b

a(b) = 36

-b * b = 36

- b^2 = 36

b^2 = -36

Take the square root of each side

sqrt(b^2) = sqrt(-36)

b =± 6i

a = - (± 6i)

so b = 6i   then a = -6i

b = -6i   then a = 6i

4 0
4 years ago
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