Of the 10 kids in a chess club, 5 are left-handed and 5 are right-handed. The club holds a round-robin tournament in which every player plays against every other player exactly once. Of all the matches, how many of them have a left-handed player competing against a right-handed player?

Answer:

34

Step-by-step explanation:

See Image Below:)

Answer:

144

Step-by-step explanation:

The simplified equation would be 4x2x3x3x2 and that put into a calculator is 144

Answer:

[tex]180.49[/tex]

Step-by-step explanation:

SOH-CAH-TOA:

In right triangles only:

The sine of an angle is equal to its opposite side divided by the hypotenuse. (o/h)

The cosine of an angle is equal to its adjacent side divided by the hypotenuse. (a/h)

The tangent of an angle is equal to its opposite side divided by its adjacent side. (o/a)

Since we're given an angle, its opposite side, and its adjacent side, we'll use tangent to solve for [tex]x[/tex]:

[tex]\tan 14^{\circ}=\frac{45}{x},\\x=\frac{45}{\tan 14^{\circ}},\\x\approx \boxed{180.49}[/tex].

Answer:

2 5/7

Step-by-step explanation:

Difference in length = length of blue line - length of red line

[tex]6\frac{2}{7} - 3\frac{4}{7}[/tex]

[tex]3\frac{2-4}{7}[/tex]

Subtract 1 from the whole number and add it to 2, when 1 is added to 2 it becomes (7 + 2) = 9

= 2 5/7

Answer:

14 cm

Step-by-step explanation:

Answer:

J. 3/2

Step-by-step explanation:

Let's solve your equation step-by-step.

5m−(m+4)=2

Step 1: Simplify both sides of the equation.

5m−(m+4)=2

5m+−1(m+4)=2(Distribute the Negative Sign)

5m+−1m+(−1)(4)=2

5m+−m+−4=2

(5m+−m)+(−4)=2(Combine Like Terms)

4m+−4=2

4m−4=2

Answer:

A. 36cm

Step-by-step explanation:

When measuring it with a ruler, you will get six of the top rectangle

6 x 6 = 36

Answer:

y=-2

Step-by-step explanation:

because it's parallel --> a=-2

therefore we have y=-2x+b

the line goes through the point (3,-6) --> (-2).3+b=-6 --> b=0

Answer:

B

Step-by-step explanation:

Substitute x = 11 into the expression

5(11 - 2)

= 5 × 9

= 45 → B

Answer:

45

Step-by-step explanation:

A function is given to us .And we need to find its value at x = 11. So on substituting x = 11 , we have ,

The given function :-

[tex]:\implies[/tex] f(x) = 5(x-2)

On putting x = 11 :-

[tex]:\implies[/tex] f(11) = 5 ( 11 - 2)

[tex]:\implies[/tex] f(11) = 5 × 9

[tex]:\implies[/tex] f(11) = 45

Answer:

$7

Davon charges $7 per hour of rental

Answer:

y=2x+5

Step-by-step explanation:

Answer:

1. True

2. False

3. True

4. False

5. True

6. False

7. True

8. True

9. True

10. True

Explanation:

Got the answers following triangle classification rules.

Answer:

1) True

2) False

3) True

4) True

5) False

6) False

7) False

8) True

9) True

10) True

These are the answers i guess............

Step-by-step explanation:

Answer:

Below.

Step-by-step explanation:

h = 112 degrees  (opposite angles are equal).

t = h = 112 degrees (corresponding angles are equal).

Answer:

C

Step-by-step explanation:

5 is rational

1/4 is rational

the product of the two is 5/4 which is also rational

Answer:

A. 0.13.

B. 0.15.

Step-by-step explanation:

For the first problem, subtract 0.87 from 1. You get 0.13.

For the second problem, add up 0.3 and 0.55 to get 0.85. Subtract this from 1 to get 0.15.

Hope this helps :)

Answer:

B. {1, -4}

Step-by-step explanation:

Just rotate the screen and look at the position.

Answer:

135

Step-by-step explanation:

if you think about it al cicle = 360 so its 360- 225= 135

Answer:

B and C

Step-by-step explanation:

First, we need to get the left side equal to zero. Take away 25 from each side to get [tex]4x^2+12x-16 = 0[/tex].

We can use the quadratic equation of [tex]\frac{-b+ -\sqrt{b^2-4ac} }{2a}[/tex] to find the solutions.

Plug them in to get [tex]\frac{-12+-\sqrt{144 -(-256)} }{8}[/tex].

Simplify.

[tex]\frac{-12+-\sqrt{400} }{8}[/tex]

[tex]\frac{-12+-20}{8}[/tex]

[tex]\frac{8}{8}[/tex] or [tex]\frac{-32}{8}[/tex]

1 and -4

x = 1 and -4

Answer:

y = 2 that sign means equal to so its literally another way to write =

so to graph this inequality you graph 2 on the y axis thats it

Step-by-step explanation:

Answer:

It will take 8.73 years.

Step-by-step explanation:

Giving the following information:

Initial investment (PV)= $1,000

Future value (FV)= $1,500

Interest rate (i)= 4.75% compounded annually

To calculate the time required for the initial investment to reach the objective, we need to use the following formula:

n= ln(FV/PV) / ln(1+i)  

n= ln(1,500/1,000) / (1.0475)

n= 8.73

It will take 8.73 years.

Answer:

Take 2 points through which the line is passing.

Let it be (0, -3) and  (1, 2)

[tex]slope ,m = \frac{y_{2} -y_{1} }{x_{2} -x_{1} } = \frac{2--3}{1-0} = 2+3 = 5[/tex]

[tex]equation \ of \ the \ line = (y - y_2) = m(x - x_2)\\[/tex]

[tex](y - 2) = 5( x - 1)\\y - 2 = 5x - 5 \\y = 5x - 5 + 2\\y = 5x -3[/tex]

9u+5

9u represents 9 multiplied by a number.

+5 means 5 more than this product.

Hope this helps.

Answer:20.7 ft

Step-by-step explanation:

Answer:

6m + 18 ≥ 42

Step-by-step explanation:

6m + 18 ≥ 42

------

No of miles per day=m

Total days=6

Target=42

Finished=18

Inequality

Answer:

45 million

Step-by-step explanation:

Let [tex]x[/tex] be the total amount of its donated funds. We can set up the following equation:

[tex]0.34x=15.2\:[\text{million}][/tex]

Solving for [tex]x[/tex], we get:

[tex]x=\frac{15.2\:[\text{million}]}{0.34},\\x=44.7\:\text{million}\approx \boxed{45\:\text{million}}[/tex]

Answer:

45 million dollars (44.706...)

Step-by-step explanation:

15.2 ÷ 0.34 = 44.706

To check our answer:

44.706 × 0.34 = 15.2