write the missing number = 1/2 of 18
please help me !!!!

The equation which has exactly one solution is 6x - 6 = 15x + 15.

The correct answer option is option A

Check all that applies:

6x - 6 = 15x + 15

6x - 15x = 15 + 6

- 9x = 21

divide both sides by -9

x = 21/-9

x = -2.33

6x + 15 = 6x + 15

6x - 6x = 15 - 15

0 = 0

False

6x - 15 = 6x + 15

6x - 6x = 15 + 15

0 = 30

False

6x - 6 = 6x + 15

6x - 6x = 15 + 6

0 = 21

False

In conclusion, the 6x - 6 = 15x + 15 has only one solution.

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The width of the rectangle is 12 feet and the length is 30 feet.

The perimeter of a shape is determined by adding the length of all the sides and edges enclosing the shape.

Given that, The perimeter of a rectangle is 84 feet. The ratio of the width to the length is 2:5.

Let the width be 2x and length be 5x,

Perimeter = 2(l+w)

2(2x+5x) = 84

2x+5x = 84/2

2x+5x = 42

7x = 42

x = 42/7

x = 6

Therefore, width = 6x2 = 12

Length = 5x6 = 30

Hence, The width of the rectangle is 12 feet and the length is 30 feet.

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Answer:

The second plan ($15.00 for 15 songs) offers the lowest cost per song.

Step-by-step explanation:

The objective is to find the plan that provides the lowest cost per song.  "Lowest cost per song" is basically $/song.  So let's compare the two plans by calculating the cost per song.

Plan 1:  $9.60/(8 songs)    = $1.20/song

Plan 2: $15.00/(15 songs) =  $1.00/song

The second plan ($15.00 for 15 songs) offers the lowest cost per song.

Gregg manages a small cleaning business. He has 16 employees. The cleaners get  $13/hour. The cleaning supervisors get paid $18/hour. then Gregg employed 11 cleaners and 5 cleaning supervisors.

Set up a system of equations where c is the number of cleaners and s is the number of cleaning supervisors:

c + s = 16

13c + 18s = 233

Solve by substitution by solving for c in the first equation:

c + s = 16

c = 16 - s

Then, plug in 18 - s as c into the second equation:

13c + 18s = 233

13(16 - s) + 18s = 233

Solve for s:

208 - 13s + 18s = 233

208 + 5s = 233

5s = 25

s = 5

Then, plug in 5 as s into the first equation:

c + s = 16

c + 5 = 16

c = 11

So, Gregg employed 11 cleaners and 5 cleaning supervisors.

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The area of the painting is 289 [tex]inches^{2}[/tex].

Given:

A square painting has a side length of 17 inches.

we know that,

Area of square = side * side.

= 17 inches * 17 inches

= 289 [tex]inches^{2}[/tex].

Therefore the area of the painting is 289 [tex]inches^{2}[/tex].

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The sale price of an item normally priced at £90 is £67.5            

What is the percentage?

A percentage in mathematics is a figure or ratio that is stated as a fraction of 100.

Given :

A shop is having a sale. all items are reduced by 25%.

To Find:

Work out the sale price of an item normally priced at £90.

Price of an item = £90

Price is reduced by 25%

Reduction in price = 25%*90=25/100= 22.5

Reduced price = 90-22.5=67.5

Hence, the sale price of an item normally priced at £90 is £67.5                              

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Answer:

=================

Given is a parallelogram

Answer:

$12.50 per hour

Step-by-step explanation:

Elon is paid by the hour. He earned $50 for a 4 hour workday. How much does he earn in one hour?

50 / 4 = $12.50 per hour

By taking the product between the mass and the acceleration, we will see that the force is:

F = 640 N

By the second Newton's law, we know that a force can cause motion on a body by accelerating it, such that the force is equal to the product between the mass of the object and the acceleration.

F = m*a

Here we know that:

m = 80kg

a = 8 m/s^2

Replacing that we get:

F = (80 kg)*( 8 m/s^2) = 640 N

Where N is the unit Newton.

1 N = 1 kg*m/s^2

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1.92%   is the probability .

Describe probability using an example?

The probability of an event is the ratio of the size of the event space to the size of the sample space.  

The size of the sample space is the total number of possible outcomes  

The event space is the number of outcomes in the event you are interested in.  

so  

Let

x------> size of the event space

y-----> size of the sample space  

so

  P = x/y

Find out the probability that the first student selected will be left-handed

we have

 x = 6

 y = 40

substitute

 P = 6/40

Simplify

P = 3/20

the probability that the second student selected will be left-handed

we have

    x = 6 - 1  = 4

y = 40 -1 = 39

substitute

 P = 5/39

the probability that the 2 students selected will both be left-handed

Multiply the probabilities

   P = 3/20(5/39)  = 15/780

Convert to percentage

Multiply by 100

15/780 * 100 = 1.92%

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The probability that you select a black card and a red card is 26/51 as per the condition mentioned "choosing two cards (without replacement )".

The area of mathematics known as probability studies potential outcomes of events as well as their relative probabilities and distributions. Simply put, probability is the likelihood that something will occur. When we don't know how an event will turn out, we can discuss the likelihood or likelihood of various outcomes. Statistics is the study of events that follow a probability distribution.

Here,

Since we have not mentioned the order,

so it can black-red or red-black,

=26/52*26/51+26/52*26/51

=2*26/52*26/51

=26/51

Assuming you choose two cards (without replacement), there is a 26/51 chance that you will choose a black card and a red card.

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Answer:  how

Step-by-step explanation: love

Step-by-step explanation:

Randy is 8 years old. His brother is twice as old as Randy. Randy’s sister is three years younger than Randy. Write an expression to represent the age of Randy’s brother.

Randy = R = 8 years

Brother =  B

B = 2R

solving:

B = 2R when R = 8

B = 2(8)

B = 16 years old

Answer: Its 16

Step-by-step explanation:

You need to take randy's age twice so you need to calculate 8x2= 16.

Answer:

Step-by-step explanation:

Noah- 4 1/6 miles/hour

Emily- 8 1/10 miles/hour

Anna- 3 1/2 miles/ hour

Emily ran the quickest.

Answer:

Anna was the fastest.

Step-by-step explanation:

Following are the steps we take to determine each one's speed:

speed=distance/time

Noah went 4 1/6 miles an hour, Emily went 4 1/2 miles an hour, and Anna went 5 5/9 miles an hour. Therefore, Anna was the fastest.

Answer:

34

Step-by-step explanation:

Absolute value means the distance from 0. So the absolute value of 34 is just 34.

Dennis spent 12 hours practicing.

1.5 hours = 90 mins
90 mins x 8
720 mins = 12 hours

To find: Equation of line parallel to 5x + 3y = -21 and passes through the point (-9, -3)

Solving the given 5x + 3y = -21 for 3y yields  3y = -5x - 21.  

Dividing all three terms by 3, we get:

y = (-5/3)x - 7, indicating that the given line has slope -5/3.

The slope of a line perpendicular to this y = (-5/3)x - 7 is 3/5, the negative reciprocal of -5/3.

Start with y = mx + b

Substitute -3 for y, -9 for x, and 3/5 for m

We get,

-3 = (3/5) (-9)  + b

∴  b   = 5/9

Thus, the equation is y = (3/5)x + 5/9 is the required equation of a line parallel to 5x+3y=−21 that passes through the point (-9,-3)

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Answer:

22.479411764705882352941176470588

Step-by-step explanation:

76.43/3.4

=22.479411764705882352941176470588

Equations B and D are true.

Please find attached the completed table of the percentage changes on the amounts drawn with MS Word.

The percentage change on an amount is found by finding ratio of the change in the amount to the original amount then multiplying the obtained ratio by 100.

The percentage change formula is presented as follows;

Where;

Making each of the variables the subject, indicates;

The new amount, [tex]x_2 = \dfrac{\%C \times x_1}{100} + x_1[/tex]

[tex]\%C \times x_1+100\cdot x_1 = 100\cdot x_2[/tex]

[tex]x_1\cdot (\%C+100) = 100\cdot x_2[/tex]

The original amount, [tex]x_1 = \dfrac{100\cdot x_2}{(\%C+100)}[/tex]

The percentage change, [tex]\%C = \dfrac{c}{x_1} \times 100[/tex]

The original amount, [tex]x_1 = \dfrac{c}{\%C} \times 100[/tex]

Using the above formulas, the completed table is created with MS Excel and is presented as follows;

Original amount  Change  Percent Change   New Amount

68 [tex]{}[/tex]                        15            22.1                        83

590 [tex]{}[/tex]                    -40          -6.8                         550

115 [tex]{}[/tex]                       20           17.4                         135

120[tex]{}[/tex]                      -33           -27.5                       87

125[tex]{}[/tex]                     -39           -31.2                        86

163   [tex]{}[/tex]                   47             28.8                       210

274[tex]{}[/tex]                     145.22       17.4                        419.22

70 [tex]{}[/tex]                      -15.4         -27.5                       54.6

1400[tex]{}[/tex]                  -1050         22.1                        350

1250[tex]{}[/tex]                  -25            -2.0                         1225

0.24[tex]{}[/tex]                    0.3            125.0                      0.54

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Answer:

(3,0) (-3,0)

Step-by-step explanation:

ask:))

Answer:

pretty sure its (-6, -4)

Step-by-step explanation:

in the ||| quadrant so I know they are both negative.

The point is 6 units to the left and 4 units down.

Hope this helps! Good luck!

The value of m is 8.

The amount of times a number has been multiplied by itself is shown by its exponent. The result of multiplying 8 by itself n times is represented as follows:

8 x 8 x 8 x 8 x …..n times = [tex]8^n[/tex]

Given:

[tex]$(m-4)^4 = \left(\frac 1{16}\right)^{-1}$.[/tex]

Now, solving for m

[tex](m-4)^4[/tex] = 16

[tex](m-4)^4[/tex] = [tex]4^4[/tex]

Taking the quad root we have

m -4 = 4

m = 4+ 4

m = 8

Hence, the value of m is 8.

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Answer:

here is the answer have a good day

Answer:

1. 40/5=8

8 x 3p=24p

8(3p+5)=24p+40

2. 48/8=6

    64/8=8

8(6q-8)=48q-64

The equation of the line parallel to 3x+3y=6 that passes through the point (7,-1) is  y = -x + 8

The equation of a line can be represented as follows:

y = mx + b

where

The lines that are parallel have the same slopes.

Therefore, let's find the slope of the equation 3x+3y=6.

3x + 3y = 6

3y = - 3x + 6

divide through by 3

y = - x + 2

Therefore, the slope is - 1.

Let's find the y-intercept of the equation using (7, 1)

y = - x + b

1 = - 7 + b

b = 8

Therefore, the equation of the line is y = -x + 8

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The slopes of the given lines are:

1. 2/5.

2. -1.

If a line passes through points on a graph, [tex](x_1, y_1)[/tex] and [tex](x_2, y_2)[/tex], the formula that can be employed to find the slope of a line is given as:

Slope (m) = change in y / change in x = [tex]\frac{y_2 - y_1}{x_2 - x_1}[/tex].

1. Using two points on the line, (3, 1) and (-2, -1):

Slope of the line = m = (-1 - 1)/(-2 - 3)

Slope of the line (m) = -2/-5

Slope of the line (m) = 2/5

The slope of the graph is 2/5.

2. Using two points on the line, (-3, 2) and (2, -3):

Slope of the line = m = (-3 - 2)/(2 -(-3))

Slope of the line (m) = -5/5

Slope of the line (m) = -1

The slope of the graph is -1.

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Answer:

57 coins are not nickels.

Equation: n + 57 = 70

Step-by-step explanation:

To find how many coins are not nickels, just add up the pennies, dimes, and quarters all together:

26 + 12 + 19 = 57 coins are not nickels.

The equation you could use to find n (nickels) would be:

n + 57 = 70

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