Simplify 3(2x +7x - 5 )

why are people so weird on this website

Answer:

Each girl had $7.50 when they arrived.

Step-by-step explanation:

We have to figure out what c (cost of each notebook) is first before we find out how much money each girl had. We also know they have the same money, so both sides are connected. The equation should be: 3x = x + 5.

3x = x + 5

First, subtract x from both sides. This cancels out the addition by x.

3x - x = 5

Now, subtract x from 3x. This equals 2x.

2x = 5

To cancel out the multiplication by 2, divide both sides by 2.

x = 5/2

Lastly, divide 5 by 2 to get 2.5.

x = 2.5

Substitute x for 2.5 in the earlier equation (3x = x + 5)

3(2.5) = 2.5 + 5

First, multiply 3 by 2.5 to get 7.5.

7.5 = 2.5 + 5

Add 2.5 to 5 to get 7.5.

7.5 = 7.5

Both sides are equal so we have our answer. So, both girls had $7.50 when they arrived at the store.

Answer:

19.8839 miles away

Step-by-step explanation:

:)

Answer:

1. x = 65

2. x = 40

3. x = -7

4. x = -4

5. x = -7

6. x = 4

Step-by-step explanation:

Angles in a triangle always add up to 180 degrees.

Thus, for each triangle you can write an equation setting the sum of the three angles equal to 180, and solving for x.

1. 180 = 80 + 35 + x

   180 - (80 + 35) = x

   180 - 115 = x

   65 = x

2. 180 = 70 + 70 + x

   180 - (70 + 70) = x

   180 - 140 = x

   40 = x

3.  180 = 76 + 41 + (x+ 70)

    180 - (76 + 41) = x + 70

    180 - 117 = x + 70

    63 = x + 70

    63 - 70 = x

    -7 = x    

4. (the red square means its a right angle = 90 degrees)

   180 = 90 + 25 + (x + 69)

   180 - (90 + 25) = x + 69

   180 - 115 = x + 69

   65 = x + 69

   65 - 69 = x

   x = -4

5. 180 = 50 + (57 +x) + (x + 87)

   180 - 50 = (57 +x) + (x + 87)

    130 = (57 +x) + (x + 87)

  combine like terms

  130 =  144 + 2x  

  130 - 144 = 2x

  -14 = 2x

   -7 = x

6. 180 = 80 + (9x + 4) + (16x - 4)

   180 - 80 = (9x + 4) + (16x - 4)

   100 = (9x + 4) + (16x - 4)

   combine like terms

    100 = 25x + 0

    100 = 25x

    4 = x

Answer:

290[tex]mi^{2}[/tex]

Step-by-step explanation:

You can divide this shape in a variety of ways, but I am going to divide it into a rectangle and a square. First, to find the area of the square, multiple 6 by 5, and get 30[tex]mi^{2}[/tex]. Next, to find the area of the big rectangle, multiply 20 by 13 and get 260[tex]mi^{2}[/tex]. Finally, add 30 and 260 and get a final answer of 290[tex]mi^{2}[/tex].

Answer:

please find attached pdf

Step-by-step explanation:

Answer:

The probability is 1/2.

Step-by-step explanation:

There are 24 T-shirts in total and 12 is half of 24, the probability is 1/2.

I'm not sure about answer...

The probability of randomly selecting a red shirt is 50%.

Step-by-step explanation:

To figure this out, separate the total number of shirts into fractions based on the color. So for example, it would look something like this: Navy shirts are 4/24, Red shirts are 12/24, and White shirts are 8/24. The probability for each of the colors would be; Navy-16.666 percent, Red-50 percent, White-33.333 percent. Since we are only looking for the probability of selecting a Red shirt, the probability would be 50%.

Answer:

9cm^2 I think

Step-by-step explanation:

L = 3

W = 3

3•3=9

Answer:

157

Step-by-step explanation:

Answer:

m=7

Step-by-step explanation:

Answer:

Mean: 8.62

Median: 8

Step-by-step explanation:

I'm guessing that what you need is the mean or median so

1+4+4+5+5+8+8+10+11+11+14+15+16=112

112/13=8.62

Mean: 8.62

Median: 8

[tex]\frac{13}{12}[/tex] is the answer

Hope this helps

Answer:

A. parallel because their slopes are equal.

Step-by-step explanation:

because parallel means matching

meaning they have the same slope

Answer:

Option (1)  ;   y = 7x

Step-by-step explanation:

(1) reads y = 7x, a line with slope 7, therefore the rate of change in this is 7

(2) says that y increases 12 units every time that x increases 4 Then the rate of change is: (increase in y / increase in x = 12/4 =3

(3) shows a table from which we can see that an increase of y in 8 corresponds to an increase of x in 2:  rate of change = (8 - 0) , (2 - 0) = 4

(4) shos a line with slope (rate of change) given by:  (12 - 0) / (2 - 0) = 12/2 = 6

Therefore, the greatest rate of change is shown by the first expression  

y = 7 x

Answer: 2/3

Step-by-step explanation:

Answer:

m=−3

Step-by-step explanation:

Answer:

It's 36.5

Step-by-step explanation:

Answer:

76

Step-by-step explanation:

because the other guy said so

Answer:

5

Step-by-step explanation:

Add each number up and then divide by how many numbers there are in this set (5)

2+4+5+6+8=25

25/5=5

Answer:

r = 5 inches

Step-by-step explanation:

because if your trying to find the radius from the diameter you divide by 2

Answer:

Abhay Patel

Roll 1

class 4th

Answer:

speak English I don't understand your letter?and what your question?

The mathematical names of the given figures are:

a. square pyramid

b. sphere

c. cube

d. triangular pyramid

Thus, the mathematical names of the given figures are:

a. square pyramid

b. sphere

c. cube

d. triangular pyramid

Learn more about shapes on:

https://brainly.com/question/28008161

#SPJ1

Answer:

6/8

Step-by-step explanation:

Multiplica el numerador y el denominador por el mismo número para obtener una fracción equivalente

Answer:

x = 15/27

Step-by-step explanation:

3(2x + 7x - 5)

Distribute the 3

6x + 21x - 15

Combine like terms

27x - 15 = 0

27x = 15

x = 15/27

Answer:

27x - 15 is your expression

Step-by-step explanation:

3 x 2x = 6x and 3 x 7x = 21x so 21x + 6x = 27x and 3 x 5 = 15 so 27x - 15 is your expression

Answer: It's given in the equations.

Step-by-step explanation:

First One

f(x) = -2^x

Second

f(x) = -4(2)^x

Third

f(x) = 4(2)^x

Fourth

f(x) = 2^x

Answer:

the answer is, {x,y} ={2,1}

Step-by-step explanation:

1) 4x - 3y = 5     2) x + 2y = 4   3) 4•(-2y+4) - 3y = 5     4) - 11y = -11                         5) 11y = 11   y = 1    6)   x = -2y+4 y = 1    7)   x = -2(1)+4 = 2 = {x,y} = {2,1} !!!