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Leokris [45]
3 years ago
7

How do solve this equation step by step

Mathematics
1 answer:
Kryger [21]3 years ago
7 0

Answer: 15n³-105n²+2n+16/6n²-42n

Step-by-step explanation:

n+8/3n²-21n +5n/2

2(n+8)+5n(3n²-21n)/2(3n²-21n)

2n+16+15n³-105n²/6n²-42n

15n³-105n²+2n+16/6n²-42n

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Riley is building a garden box for his backyard. He wants the perimeter to be 32 ft long. If
MA_775_DIABLO [31]

Answer:

Length of the garden = 10 ft

Step-by-step explanation:

Perimeter of a garden = 2(length + width)

Perimeter of the garden = 32 ft

Width of the garden = 6 ft

Length of the garden = x ft

Perimeter of a garden = 2(length + width)

32 = 2 ( x + 6 )

Open parenthesis

32 = 2x + 12

Subtract 12 from both sides

32 - 12 = 2x + 12 - 12

20 = 2x

Divide both sides by 2

20 / 2 = 2x / 2

10 = x

x = 10 ft

Therefore, length of the garden = x = 10 ft

3 0
3 years ago
In a class of all girls, 22 of the 28 students have brown hair. What is the
Verdich [7]

Answer:

\frac{3}{14}

Step-by-step explanation:

Total Students = 28

Brown Hair = 22

NOT Brown Hair = 28 - 22 = 6

The probability of an event is the number of that event divided by total number.

So, let denote probability of without brown hair be  P(NOT BROWN). So, we can say:

P(NOT BROWN) = 6/28

Reducing, we get:

P(NOT BROWN) = 3/14

4 0
3 years ago
HELPPPP ASAP it’s so confusing I’ll brainlist whoever gets it.
den301095 [7]

Answer:

probability she does not win badminton: 1/10

probability she does not win tennis: 3/5

not sure what the other tree is supposed to be

i think the probability of her winning both is 11/15

Step-by-step explanation:

i havent done this in a while so i could be wrong:/ sorry if it is

4 0
2 years ago
Justify x over 3 minus 7 equals 11
drek231 [11]

Answer:

54/3-7=11

Step-by-step explanation:

x/3<u>-7=11</u>

   +7 +7

(3)x/3=18(3)

     x=54

Check

54/3-7=11

18-7=11

11=11

4 0
3 years ago
The mean age of 5 people in a room is 32 years. A person enters the room. The mean age is now 34. What is the age of the person
nikdorinn [45]
The age of the person is 36 :) hoped this helped
8 0
3 years ago
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