15 pts for this question :)

Answer:

X = 15

Step-by-step explanation:

We move all terms to the left:

x+8+2x-(2x+13)=0

We add all the numbers together, and all the variables:

3x-(2x+13)+8=0

We get rid of parentheses:

3x-2x-13+8=0

We add all the numbers together, and all the variables:

x-5=0

We move all terms containing x to the left, all other terms to the right:

x=5

Answer:

81x^(2)-1

Step-by-step explanation:

Rewrite 81^(2) as (9x)^(2)

Rewrite 1 as 1^(2)

Since they are perfect squares , factor using the perfect squares formula

(9x + 1) (9x - 1)

Answer:

.5

Step-by-step explanation:

2/4  2 goes into 2 1 time and 2 goes into 4 2 times so therefore 2/4 is = 1/2

1/2= .5

The model that shows 33 1/3% is the first model that has one shaded box and two unshaded boxes.

Percentage can be described as a fraction out of an amount that is usually expressed as a number out of hundred. Percentage is a measure of frequency and the sign used to represent percentages is %.

33 1/3 % is expressed as a mixed fraction, that is it is made up of a whole number and a proper fraction. In order to convert 33 1/3 % to a fraction, divide 33 1/3 % by 100

33 1/3 % ÷ 100 = 1 / 3

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Answer:

1/6

Step-by-step explanation:

(1) 2x + 3y = 31 y

(2) 2x + 3y = x + 7

(3) 31y = x + 7

(3) x = 31y - 7

(2) 2(31y - 7) + 3y = 31y - 7 + 7 ; 62y - 14 + 3y = 31y ; 34y = 14 ; y = 14/34 ; y = 7/17

(3) x = 31y - 7 ; x = 31*(7/17) - 7 ; x = (217 - 119)/17 = 98/17

x = 98/17 ≈ 5.76

y = 7/17 ≈ 0.41

Answer:

-1/12

Step-by-step explanation:

The line passes through (0,10) and (-600,60)

So m = (60 - 10)/(-600 - 0) = 50/(-600) = -1/12

10.14

explain explain explain explain

Answer:

10.14

Step-by-step explanation:

1.69

x 6

------

10.14

The decimal points do not need to line up when multiplying..

1. The 6 on the bottom is multipled by the 9 on top which gets us 54 we write down the 4 and carry the 5.

2. The 6 on the bottom is now multiplied with the other 6 on top which gets us 36 plus the 5 that we carried earlier in the first step which equals 41. 36 + 5 = 41 We write down the 1 and carry the 4.

3. The 6 on the bottom is now multiplied with the 1 on top which gets us 6 plus the 4 that we carried ealier in the second step which equals 10. 6 + 4 = 10

4. So now we have the numbers 1014 but we can't forget about the decimal. Count all the numbers behind the decimal in the top and bottom numbers (if the bottom number doesn't have any numbers behind it, then no need to count), and we get two numbers behind the decimal.

5. When a number has no decimal in between the numbers then the decimal will always be at the end. So now we move the decimal (at the end) two times to the left and get 10.14

Check:

10.14 ÷ 6 = 1.69

True statement.

Hope this helps :)

Answer:

7.2

Step-by-step explanation:

The wavelength measurement of the figure is,

⇒ 2 meter

Subtraction in mathematics means that is taking something away from a group or number of objects. When you subtract, what is left in the group becomes less.

We have to given that;

The figure is shown in image.

Since, We know that;

Wavelength is the distance between identical points in the adjacent cycles of a waveform signal propagated in space or along a wire.

Hence, We get;

The wavelength measurement of the figure is,

⇒ 3.5 - 0.5 meter

⇒ 2 meter

Thus, The wavelength measurement of the figure is,

⇒ 2 meter

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Based on the temperatures displayed by Thermometer A and Thermometer B, the thermometer displaying the greater temperature is Thermometer A

The best way to find the thermometer that is displaying the greater temperature is to convert the units of temperature to a single unit so that a proper comparison can be made.

Convert Thermometer B to degrees Fahrenheit. Celsius to Fahrenheit gives:

= (1°C × 9/5) + 32

=  (22°C × 9/5) + 32

= 71.6 degrees Celsius

This means that Thermometer A is displaying the greater temperature.

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The fraction of the company's annual budget which was spent on developing a new machine is; 8/25.

It follows from the task content that the company in discuss spent 32% of its annual budget developing a new machine.

This insinuates that the percentage given can be as a fraction as follows;

= 32/100

When expressed in it's simplest form;

= 8/25

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The slope-intercept equation of the given line is 3x + y = 25

Slope-intercept is one of the special forms of linear equations where we can find the slope-intercept of any point with its coordinates and its slope.

The line is passing through the point(x₁,y₁) = (7,4)

The slope of the line line(m) = -3

Slope-intercept equation

y-y₁ = m( x- x₁)

Where (x₁,y₁)  is (7,4) and Slope,m is -3

Let us substitute these values in the slope-intercept equation, It becomes

y - 4 = -3(x - 7)

y - 4 = -3x + 21

3x + y  = 21 + 4

3x + y = 25  

which is the slope-intercept equation of the points (7,4) and slope -3

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Answer:

181

Step-by-step explanation:

7× (82 - 60) + 3³

or. 7 × 22 + 27

or 154 + 27

or. 181

Answer:

y /< 5/2 x +5

Step-by-step explanation:

y is less than or equal to 5/2 x plus 5

since its a solid line and shaded below you would use less than or equal to

Answer:

one way?

Step-by-step explanation:

huh? what do you mean by this question?

Answer:

Variance: 26.5

Standard Deviation: 5.1478150704935

Step-by-step explanation:

First, Add up all of the numbers: 6 + 7 + 11 + 12 + 19 = 55

Square the total, and then divided the number of items in the data set55 x 55 = 3025

3025 / 5 = 605

Take your set of original numbers from step 1, squared them individually this time, and added them all up:(6 x 6) + (7 x 7) + (11 x 11) + (12 x 12) + (19 x 19) = 711

Subtract the amount in step 2 from the amount in step 3:711 - 605 = 106

Subtract 1 from the number of items in my data set:5 - 1 = 4

Divide the number in step 4 by the number in step 5:106 / 4 = 26.5

Finally, take the square root of the number from step 6 (the variance),

√(26.5) = 5.1478150704935

Answer:

"dadadaddda"

Step-by-step explanation:

"daddadada"

Answer:

W=13 ft L=35 feet

Step-by-step explanation:

see detailed explanation below

Answer:

(-1, -5) satisfies the inequality and will be the solution to the inequality.

From the attached figure, it is clear that  (-1, -5) is below the line.

Therefore, the correct option is:

''Yes, because 1-1, 5) is on the line​''.

Step-by-step explanation:

Given the inequality

[tex]y\le -\frac{3}{4}x-1[/tex]

substituting (-1, -5)  to check whether it satisfies the inequality or not

[tex]-5\le \:-\frac{3}{4}\left(-1\right)-1[/tex]

[tex]-5\:\le \:\frac{3}{4}-1[/tex]

[tex]-5\:\le -\frac{1}{4}[/tex]

TRUE

Thus, (-1, -5) satisfies the inequality and will be the solution to the inequality.

From the attached figure, it is clear that  (-1, -5) is below the line.

Therefore, the correct option is:

''Yes, because 1-1, 5) is on the line​''.

Answer:

The coordinates of point Q are [tex]\mathbf{(4,2\frac{1}{2})}[/tex]

Step-by-step explanation:

The coordinates of point Q can be found looking at the graph

We need to find the value of x-coordinate and y-coordinate by looking at graph.

Check the value of x-coordinate that matches point Q similarly check the value of y-coordinate that matches point Q

Looking at the graph Point Q is at x=4 and y=2.5 or [tex]2\frac{1}{2}[/tex]

So,  The coordinates of point Q are [tex]\mathbf{(4,2\frac{1}{2})}[/tex]

Answer:

(r o g)(2) = 4

(q o r)(2) = 14

Step-by-step explanation:

Given

[tex]g(x) = x^2 + 5[/tex]

[tex]r(x) = \sqrt{x + 7}[/tex]

Solving (a): (r o q)(2)

In function:

(r o g)(x) = r(g(x))

So, first we calculate g(2)

[tex]g(x) = x^2 + 5[/tex]

[tex]g(2) = 2^2 + 5[/tex]

[tex]g(2) = 4 + 5[/tex]

[tex]g(2) = 9[/tex]

Next, we calculate r(g(2))

Substitute 9 for g(2)in r(g(2))

r(q(2)) = r(9)

This gives:

[tex]r(x) = \sqrt{x + 7}[/tex]

[tex]r(9) = \sqrt{9 +7{[/tex]

[tex]r(9) = \sqrt{16}[/tex]{

[tex]r(9) = 4[/tex]

Hence:

(r o g)(2) = 4

Solving (b): (q o r)(2)

So, first we calculate r(2)

[tex]r(x) = \sqrt{x + 7}[/tex]

[tex]r(2) = \sqrt{2 + 7}[/tex]

[tex]r(2) = \sqrt{9}[/tex]

[tex]r(2) = 3[/tex]

Next, we calculate g(r(2))

Substitute 3 for r(2)in g(r(2))

g(r(2)) = g(3)

[tex]g(x) = x^2 + 5[/tex]

[tex]g(3) = 3^2 + 5[/tex]

[tex]g(3) = 9 + 5[/tex]

[tex]g(3) = 14[/tex]

Hence:

(q o r)(2) = 14

Answer:

NUMBER PLEASE.

Step-by-step explanation: