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lesya [120]
3 years ago
14

Which of the following cannot be solved using nPr?

Mathematics
1 answer:
likoan [24]3 years ago
6 0

Answer:

permutations of the letters of the word "PERMUTATION"

Step-by-step explanation:

Thats cause the word has two t's and some permutations are going to be the same, you have to substract some to get the actual answer.

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Solve each equation. Record your work and check your solution. <br> a. 5(x-2)+(-9)= -7(1-x)
Daniel [21]

The solution for equation is x = -6

<em><u>Solution:</u></em>

<em><u>Given equation is:</u></em>

5(x-2) + (-9) = -7(1-x)

We have to solve the equation

According to Bodmas rule, if an expression contains brackets ((), {}, []) we have to first solve or simplify the bracket followed by of (powers and roots etc.), then division, multiplication, addition and subtraction from left to right

Therefore, solve for brackets in given equation

5(x-2) + (-9) = -7(1-x)\\\\5x - 10 -9 = -7 + 7x

Solve for terms in left hand side of equation

5x - 19 = -7+7x

Move the variables to one side and constants to other side

7x -5x = -19+7\\\\2x = -12\\\\Divide\ both\ sides\ by\ 2\\\\x = -6

Thus the solution for equation is x = -6

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3 years ago
Which of the followers scatter plots could have a trend line with an equation of 2x+5
Mice21 [21]
C
Hope this really helps you
4 0
3 years ago
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What is the answer to 2x+5y=16
emmasim [6.3K]

Answer:

Option C -

Given : AB and BC form a right angle at point B. If A = (-3, -1) and B = (4, 4).

To find : What is the equation of BC ?

Solution :

AB and BC form a right angle at point B.

A=(-3,-1)  and  B=(4,4)

The slope of line AB is

Step-by-step explanation:

Hopfully this helped, if not HMU and I will get you a better answer

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6 0
4 years ago
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Question 2-4 please
STALIN [3.7K]

Answer:

Step-by-step explanation:

2) a) You have to find the area of semicircle.

r = d/2 = 12/2 = 6 mm

Area of semicircle = \frac{1}{2}\pi r^{2}

                              = \frac{1}{2}*3.14*6*6\\\\= 3.14*3*6\\\\=  56.52 mm^{2}

b) r = 10 cm

Area of quadrant = \frac{1}{4}\pi r^{2}

                             = \frac{1}{4}*3.14*10*10\\\\=3.14*5*5\\\\= 78.5 cm^{2}

3) d = 10 m

r = d/2 = 10/2 = 5 m

Area of circular garden = πr²

                                       = 3.14 * 5 * 5

                                       = 78.5 m²

Area of rectangular pool = 8 * 6 = 48 m²

Area of the garden covered in grass = area of the circular garden - area of pool

   = 78.5 - 48

   = 30.5 m²

4) a) r = 60 cm

Area of the top of the circular table = πr²

             = 3.14 * 60 *  60

            = 11304 cm²

diameter of base = 30 cm

r = 30/2 = 15 cm

Area of circular base = 3.14 * 15 * 15

                                   = 706.5 cm²

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3 years ago
Find the value of b. Express the answer as a simplified radical.
Karolina [17]

√ 132 which simplifys to 2√33

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3 years ago
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