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Vadim26 [7]
3 years ago
13

How many two person can be picked out of a group of 7

Mathematics
1 answer:
lawyer [7]3 years ago
7 0
{7 \choose 2}=\dfrac{7!}{2!5!}=\dfrac{6\cdot5}{2}=3\cdot5=15
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in triangle WXY, if the measure of angle w is five less than twice the measure of angle y and the measure of angle x is 21 more
Vikki [24]

Considering that the sum of the internal angles of a triangle is of 180º, the measures of the angles in triangle WXY are given as follows:

x = 62º, y = 41º, w = 76º.

<h3>What is the sum of the internal angles of a triangle?</h3>

The sum of the internal angles of a triangle is of 180º. In this problem, the angles are w, x and y, hence:

x + y + w = 180.

The measure of angle w is five less than twice the measure of angle y, hence:

w = 2y - 5.

The measure of angle x is 21 more than the measure of angle y, hence:

x = y + 21.

Replacing in the first equation, we can find angle y as follows:

y + 21 + y + 2y - 5 = 180.

4y = 164.

y = 164/4

y = 41.

Then:

  • w = 2y - 5 = 2(41) - 5 = 76.
  • x = y + 21 = 41 + 21 = 62.

The measures of the angles are given as follows:

x = 62º, y = 41º, w = 76º.

More can be learned about the sum of the internal angles of a triangle at brainly.com/question/25215131

#SPJ1

7 0
2 years ago
What is the slope of the line 6x + 8y = 12?
Margaret [11]

Answer:

The slope is -3/4

Step-by-step explanation:

6x + 8y = 12

Write the equation in slope intercept form  y = mx+b where m is the slope

Subtract 6x from each side

6x-6x + 8y = -6x+12

8y = -6x+12

Divide each side by 8

8y/8 = -6x/8 +12/8

y = -3/4x +3/2

The slope is -3/4

7 0
4 years ago
In City Lake, researchers caught, marked, and released 258 bass. Later, they took a sample of 130 bass and found that 26 were ma
Vsevolod [243]

26 out of 130 were marked.

Divide 26 by 130:

26/130 = 0.20

20% of the bass caught were tagged.

Now divide the total amount caught and tagged by that percentage:

258 / 0.20 = 1,290

There are 1,290 bass in the lake.

7 0
3 years ago
cranberry juice cost $6.30 per quart and apple juice cost $3.60 per quart Terence wants to know how many quarts q of cranberry j
Gekata [30.6K]

Note: "total" is from adding the first and last columns (middle column should be provided because it is a rate which cannot be added).

                       Amount        x        Cost             =         Amount x Cost

Cranberry:          q                        $6.30                          $6.30q

Apple:            <u>    4       </u>                  <u>$3.60</u>                      <u> $3.60(4)  = $14.40</u>

Total:                4 + q                     $4.50           =         $6.30q + $14.40

                                                   $4.50(4 + q)   =          $6.30q + $14.40

                                             $18.00 + $4.50q  =          $6.30q + $14.40

                                                              $3.60  =           $1.80q

                                                                    2    =           q

Since you didn't provide the equation options, hopefully you can use the solution to help you decide which option to choose.

6 0
3 years ago
Read 2 more answers
What are the domain and range of f(x) = 4x – 8?
Andrej [43]
F(x) = mx + b represent the straight line. If m ≠ 0 then the domain and the range of that function are real number.

8 0
3 years ago
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