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Alina [70]
2 years ago
5

Please help me please

Mathematics
2 answers:
Over [174]2 years ago
6 0

Answer:

A 8x+10y

Step-by-step explanation:

Sum of 12x+9y and -2y

12x+9y + -2y

12x +7y

Subtract 4x-3y from 12x+7y

12x+7y - (4x-3y)

Distribute the minus sign

12x+7y -4x+3y

8x +10y

s2008m [1.1K]2 years ago
4 0

Answer:

8x+10y

Step-by-step explanation:

What you do first is you need to subtract -2y from 9y to get 7y.

So you have (12x+7y)-(4x-3y). The negative sign needs to be added into the problem so it will be (12x+7y)+(-4x+3y). You will then add and minus them together to get 8x+10y.

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Ezra counts the number of passengers who are already on the bus when he gets on each morning. His data for the last 15 days are
Rom4ik [11]

Answer:

6

Step-by-step explanation:

The data is

8,9,9,10,12,12,13,14,15,15,15,16,18,19,20

There are 15 data points

The median is the 15/2 = 7.5  rounding to 8

The 8th data point

8,9,9,10,12,12,13,    14,     15,15,15,16,18,19,20

Take the 7 points on the left and divide  in half

Take the 7 points on the right and divide  in half

8,9,9,   10   ,12,12,13,    14,     15,15,15,   16,    18,19,20

The interquartile range is the middle of the upper half of the data minus the middle of the lower half of the data

16 - 10 = 6

5 0
3 years ago
What is 1 5/8 in decimal form?
Law Incorporation [45]
The answer is 1.625
6 0
3 years ago
Read 2 more answers
Solve This equation and Show Work<br> 1/2d + 3/8 = -2d
Effectus [21]

½d + 3/8 = -2d

<span>-½d           -½d</span>

<span>3/8          = -2 ½d</span>

<span>/(-2 ½)      /(-2 ½)</span>

<span>3/20        = d </span>

5 0
3 years ago
18/13=3/4x<br> what does x equal?
sveta [45]

Answer:

x = 24/13

General Formulas and Concepts:

<u>Pre-Alg</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

Step-by-step explanation:

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

18/13 = 3/4x

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

  1. Divide both sides by 3/4:          x = 24/13

<u>Step 3: Check</u>

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

  1. Substitute:                    18/13 = 3/4(24/13)
  2. Multiply:                        18/13 = 18/13
5 0
2 years ago
What is the constant of variation, k, of the direct variation, y = kx, through (–3, 2)?
anygoal [31]
Answer:

k = 2/-3

Step-by-step explanation:

y = kx

Point: (-3, 2)

2 = k(-3)

k = 2/-3

k = -0.6
5 0
3 years ago
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