If a+b = 11 and a−b = 7, then ab

Answer:

FE = 14.4

Step-by-step explanation:

Cos = Adj / Hypo.

So

Cos (F) = FE / DF

Cos (26) = FE / 16

FE = Cos (26) * 16

FE = 0.8988 * 16

FE = 14.4

18.3.................

Answer:

37.5

Step-by-step explanation:

Since it is a cube, all of the lengths are equal. To find the surface area, you do

2.5*2.5 which is 6.25. After we get the 6.25, we need to find how many faces are there in this cube. (Including the base) There are 6 bases, then you take 6.25*6 to get the surface area. The final answer would be 37.5

Final answer:

To find the number of sliders and chicken wings in the combination meal, set up a system of equations and solve. There are 2 sliders and 10 chicken wings in the combination meal.

Explanation:

In order to find the number of sliders and chicken wings in the combination meal, we can set up a system of equations. Let's assume that the number of sliders is 's' and the number of chicken wings is 'c'. We know that each slider has 250 calories and each chicken wing has 60 calories. The total number of sliders and chicken wings in the combination meal is 12, so we have the equation s + c = 12.

We also know that the total number of calories in the combination meal is 1100. Since each slider has 250 calories and each chicken wing has 60 calories, we can write the equation 250s + 60c = 1100.

Now we can solve this system of equations to find the values of 's' and 'c'.

Multiplying the first equation by 60, we get 60s + 60c = 720. Subtracting this equation from the second equation, we get 250s - 60s = 1100 - 720, which simplifies to 190s = 380. Dividing both sides by 190, we find that s = 2.

Substituting this value back into the first equation, we have 2 + c = 12. Solving for 'c', we find that c = 10.

Therefore, there are 2 sliders and 10 chicken wings in the combination meal.

Answer:

To calculate the mean, simply add all of your numbers together. Next, divide the sum by however many numbers you added. The result is your mean or average score.

Step-by-step explanation:

This is the correct answer to this question.

Hope this helps!!!

Kyle.

Answer:

I'm guessing you mean Statistics so here is the best answer i can find The branch of mathematics that deals with the collection, organization, analysis, and interpretation of numerical data. Statistics is especially useful in drawing general conclusions about a set of data from a sample of the data.

Step-by-step explanation:

Answer:

The answer is 525

Answer:

Option B. 525 students.

Step-by-step explanation:

The school enrollment for Oakwood Elementary is shown in the graph.

The given graph is representing a linear function. So we will form the function first to calculate the enrollment in 2012.

Equation of the given line in the graph will be in the form of y = mx + c

where m is the slope and c = y- intercept

y-intercept = 300

this line passes through two ordered pairs (0, 300) and (1, 325)

Now the slope m = [tex]\frac{y-y'}{x-x'}[/tex]

m = [tex]\frac{325-300}{1-0}=25[/tex]

Therefore, equation representing the situation will be y = 25x + 300

Now we will put the value of x = year 2012 - year 2003 = 9 years

y = 25×9 + 300

y = 225 + 300

y = 525

Option B. 525 is the correct option.

Answer:

15

Step-by-step explanation:

Answer:

The answer is 20 square units

Step-by-step explanation:

A=bh

A=5 times 4

A=20 units^2

Answer:

3 choices for the first color, 2 choices for the second color, 1 choice for the third color.

3 × 2 × 1 = 6 different flags are possible.

Answer: A) Measurement Data

Step-by-step explanation:

you're recording time

Step-by-step explanation:

Paralle lines have the same slope.

The slope-intercept form of an equation of a line:

[tex]y=mx+b[/tex]

m - slope

b - y-intercept

We have

[tex]5y+9=-2x[/tex]

Convert to the slope-intercept form:

[tex]5y+9=-2x[/tex]           subtract 9 from both sides

[tex]5y=-2x-9[/tex]         divide both sides by 5

[tex]y=-\dfrac{2}{5}x-\dfrac{9}{5}\to m=-\dfrac{2}{5}[/tex]

Each of the answers to choose from is not the line equation sought.

The equation:

[tex]y=-\dfrac{2}{5}x+b[/tex] where b is any real number.

Parallel lines share the same slope. The slope of the given line is -2/5, so none of the provided options are correct as none have this slope.

To find the equation of a line that is parallel to another, it's important to know that parallel lines have the same slope. So firstly, we need to find the slope of the given equation. Starting with 5y + 9 = -2x, we will rearrange this into slope-intercept form (y = mx + b), where 'm' is slope and 'b' is y-intercept.

So, the slope of the given line is -2/5. This means a parallel line will also have the slope -2/5. Therefore, neither [1] y=-2x +3 nor [2] y = 2x + 1, [3] y = x+4 and [4] y=-x-1 can be parallel to the given line because all of them have different slopes not equal to -2/5.

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Answer:

L=10 cm

Step-by-step explanation:

Surface area of cube = 600

6L^2=600

L^2=600/6

L^2=100

L=

[tex] \sqrt{100} [/tex]

L=10 cm

Answer:

Step-by-step explanation:

Jndjd

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Mjd

490x9 this is because he traveled 490 miles everyday for 9 days

+1292 then he travels an extra 1292 miles so you add it on

Answer:

[tex]cos(C) =\frac{40}{41}\\\\cos(C)=0.976[/tex]

Step-by-step explanation:

To find the [tex]cos (C)[/tex] we must use the cosine theorem.

The cosine theorem says that:

[tex]c^2 = a^2 +b^2 -2abcos(C)[/tex]

In this case:

[tex]c=AB = 9[/tex]

[tex]b=CA = 41[/tex]

[tex]a=BC = 40[/tex]

So

[tex]9^2 = 40^2 +41^2 -2(40)*(41)cos(C)[/tex]

[tex]9^2- 40^2- 41^2 =-2(40)*(41)cos(C)[/tex]

[tex]cos(C) = -\frac{9^2- 40^2- 41^2}{2(40)*(41)}[/tex]

[tex]cos(C) =\frac{40}{41}\\\\cos(C)=0.976[/tex]

Answer:

C I got this question right on my test that I just finished.

Step-by-step explanation:

Also I just wanted to say that I am praying for all those with the virus and we are all in this together #WorldUnited :):):):)

Using the Pythagorean theorem the formula would look:

[tex]c^2=b^2+a^2\Longrightarrow3.4^2=3^2+a^2[/tex]

Now just solve for a.

[tex]a^2=3.4^2-3.0^2\Longrightarrow a=\sqrt{3.4^2-3.0^2} \\

a=\sqrt{11.56-9}=\sqrt{2.56}=\boxed{1.6}

[/tex]

Side a is 1.6 inches long.

Hope this helps.

r3t40

Answer:

About 6400

Step-by-step explanation:

Round all values: 316 --> 320, 4.03 --> 4, 0.198 --> 0.2

Expression: 320*4/0.2

Multiply: 320*4 = 1280, 1280/0.2

Divide: 2180/0.2 = 6400

316 times 4.03 equals 1273.48 then divide the product by 0.198 and you should get 6431.71717 and could round to 6432. sorry if this is wrong but have a wonderful day

Answer:

always increasing

Step-by-step explanation:

When you look at the graph from left to right on the x-axis the y-axis is always increasing in value.

The graph in question is a line graph, used to show correlations between two variables on a horizontal and vertical axis. Other graph types include bar graphs, for comparing different categories of data, and pie charts, for representing parts of a whole. The third exam vs final exam graph demonstrates a good model of linearity with little deviation.

The description best fitting the graph in this instance is that of a line graph. Line graphs are used to show the correlation between two variables, one on the horizontal axis and one on the vertical axis. They are most appropriate when trying to communicate trends, such as increases, decreases, or consistency over a period of time.

Another type of graph is a bar graph, which is most effective when comparing different categories of data. For example, comparing the amount of rainfall each month can be appropriately represented using a bar graph. Finally, a pie chart displays proportional relationships in the data and is best used when representing parts of a whole, such as voters' preferences in an election.

Referring back to the graph about the third and final exams, it could be said that the line of best fit models the data well, where there appears to be little deviation from the line. By analyzing the graphs carefully, it is possible to draw meaningful conclusions and compare data accurately.

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Answer:

Step-by-step explanation:

Do you mean multiply?

- 8/15 * 20/24

- 8/15 * 5/6

5 and 15 have a common divisor -- 5

- 8/3 * 1 / 6

8 and 6 can be divided by 2.

-4/3 * 1/3

-4 / 9

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

You could do the same thing without cancellation.

-8/15 * 20/24 = -160 / 360    

Now you can divide by common factors. Start by dividing top and bottom by 10

- 16 / 36            Now divide top and bottom by 4

- 4 / 9

Answer:

$3.66

Step-by-step explanation:

5 minus 1.34 equals 3.66.

You just have to subtract the bill and the change like this: 5-1.34= 3.66$

Answer:

C; 117,147

Step-by-step explanation:

Its 3(n-1)

Just multiply the first term by 3, 12 times.

Answer: 177,147

Step-by-step explanation: this is because a1 is 1 then a2 is 3 then a3 is 9 then a4 is 27 and so on. This means that you start at 3 to the 0th power and multiply 3 as you go on

Answer:

[tex]\boxed{\bold{31}}[/tex]

Explanation:

Solve [tex]\bold{6= -s + 77}[/tex]

--------------------------

Add 's' To Both Sides

= [tex]\bold{6+s=-s+77+s}[/tex]

Simplify

= [tex]\bold{6+s=77}[/tex]

Subtract 6 From Both Sides

= [tex]\bold{6+s-6=77-6}[/tex]

Simplify

= [tex]\bold{s \ = \ 71}[/tex]

Insert '71' Into 1 + 5 (77 - s)

-------------------------------

1 + 5 (77 - 71)

Solve:

77 - 71 = 6

= 1 + 5 · 6

5 · 6 = 30

= 1 + 30

= 31

Mordancy.

Answer:

1 + 5(77 - s) = 31

Step-by-step explanation:

Solve for s:

[tex]-s+77=6\qquad\text{subtract 77 from both sides}\\\\-s=-71\qquad\text{change the signs}\\\\s=71[/tex]

Put the value of s to the expression 1 + 5(77 -s):

[tex]1+5(77-71)[/tex]

Use PEMDAS:

P Parentheses first

E Exponents (ie Powers and Square Roots, etc.)

MD Multiplication and Division (left-to-right)

AS Addition and Subtraction (left-to-right)

[tex]=1+5(6)=1+30=31[/tex]

Answer:

The distance between the center and the foci is √13 ≅ 3.6 units

Step-by-step explanation:

* Lets revise the equation of the ellipse

- The standard form of the equation of an ellipse with center

  (0 ,  0) and major axis parallel to the x-axis is

x²/a² + y²/b² = 1

# a  >  b

- The length of the major axis is 2a

- The coordinates of the vertices are  (± a , 0)

- The length of the minor axis is 2b

- The coordinates of the co-vertices are (0 , ± b)

- The coordinates of the foci are  (± c , 0), where c² =  a² −  b²

* Lets solve the problem

∵ The equation is x²/49 + y²/36 = 1

∴ a² = 49

∴ b² = 36

∵ The coordinates of the foci are (± c  , 0)

∵  c² = a² − b²

∴ c² = 49 - 36 = 13 ⇒ take square root for both sides

∴ c = ± √13

∴ The foci are (√13 , 0) and (-√13 , 0)

∵ The center is (0 , 0)

∴ The distance between the center and the foci is c - 0 = c or

   0 - (-c) = c

∴ The distance between the center and the foci = √13 - 0 = √13 units

* The distance between the center and the foci is √13 ≅ 3.6 units

The distance of the foci from the center of the ellipse given by the equation [tex]x^{2/49} + y^{2/36}[/tex] = 1 is approximately 3.61 units.

To find the distance of the foci from the center of the ellipse given by the equation  [tex]x^{2/49} + y^{2/36}[/tex] = 1, we use the formula for the focal distance in an ellipse: c = √(a² - b²).

Here, a² is the larger denominator, which is 49, and b² is the smaller denominator, which is 36. Therefore:

Now, calculate the focal distance:

c = √(a² - b²) = √(49 - 36) = √(13) ≈ 3.61

Thus, the foci are approximately 3.61 units away from the center of the ellipse.

The correct option is C.

Carlos can make 4 different burgers by choosing between beef or turkey and wheat or white roll.

To calculate the number of different burgers Carlos can make, we'll use the fundamental principle of counting.

Step 1: Determine the number of options for the type of burger. Carlos can choose either beef or turkey, so there are 2 options.

Step 2: Determine the number of options for the type of roll. Carlos can choose either wheat or white, so there are 2 options.

Step 3: Multiply the number of options for each step together to find the total number of combinations.

Number of burger options × Number of roll options = Total combinations

2 options for type of burger × 2 options for type of roll = 4 total combinations

So, Carlos can make 4 different burgers.

Answer: C. 4

The complete question is here:

Carlos can choose from a beef or turkey burger and from a wheat or a white roll. How many different burgers can he make?

A. 8

B. 3

C. 4

D. 2

Here, the given equation is,

x^2+y^2+px+6y-3=0

By copairing it with x^2+y^2+2gx+2fy+c=0, we get,

2g=p or, g=p/2

2f=6 or, f=3

c=-3

now the radius is,

r^2=g^2+f^2-c

or, 4^2=(p/2)^2 +3^2 -(-3)

or, 16= p^2/4 +9+3

or, 16-9-3=p^2/4

or p^2/4=4

or, p^2=4×4

or p^2=4^2

or p=4

therefore the rewuired value of p is 4.

Answer:

Possible values are 4 and -4.

Step-by-step explanation:

First complete the square on the x and y terms:

x^2 + y^2 + px + 6y - 3 = 0

(x + 0.5p)^2 - 0.25p^2 + (y + 3)^2 - 9 - 3 = 0

(x + 0.5p)^2 + (y + 3)^2 = 12 + 0.25p^2

This is the standard form of the equation of the circle where the right side = radius^2 so we can write:

12 + 0.25p^2 = 4^2

0.25p^2 = 16 - 12 = 4

Taking square roots:-

0.5p = +/- 2

p = 2 / 0.5 , -2 / 0.5

p = 4, -4.

The pair of equations has one solution and the solution is (30/11, 20/11).

The general equation of a straight line is y=mx+c, where m is the gradient, and y = c is the value where the line cuts the y-axis. This number c is called the intercept on the y-axis.

The coordinates on one line are (2, 6) and (5, 0)

Here, m=(0-6)/(5-2)

= -2

Substitute m=-2 and (2, 6) in y=mx+c, we get

6=-2(2)+c

c=10

So, the equation of a line is y=-2x+10 -----(i)

The coordinates on another line are (0, 2) and (6, 6)

Here, m= (6-2)/(6-0)

= 2/3

Substitute m=2/3 and (0, 2) in y=mx+c, we get

2=2/3(0)+c

c=0

So, the equation is y=2/3 x -----(ii)

Substitute equation (ii) in (i), we get

2/3 x=-2x+10

2x/3 +3x =10

11x=30

x=30/11

Substitute x=30/11 in equation (ii), we get

y =2/3 × 30/11

y= 20/11

So, the solution is (30/11, 20/11)

Therefore, the pair of equations has one solution and the solution is (30/11, 20/11).

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Answer:

Step-by-step explanation:

If you're given a line, determine its slope.

Any parallel line you construct must have the same slope as does the given line.

Any perpendicular line you construct must have a slope which is the negative reciprocal of the slope of the given line.

Parallel lines have the same slope.

And perpendicular lines have negative reciprocal slopes. Ex. 2/3 x and -3/2x

Answer:

5.5360

Step-by-step explanation:

I added

5+0.5= 5.5

5.5+0.03=5.53

5.53+0.006=

5.5360

For this case we have the following equation:

[tex]\frac {1} {4} (8-4p) + 2p = 12[/tex]

We apply distributive property to the terms within parentheses.

[tex]\frac {8} {4} - \frac {4p} {4} + 2p = 12\\2-p + 2p = 12\\2 + p = 12[/tex]

Subtracting 2 on both sides of the equation:

[tex]p = 12-2\\p = 10[/tex]

ANswer:

[tex]p = 10[/tex]

Answer:

p = 10

Step-by-step explanation:

1\4(8 - 4p) + 2p = 12

8 - 4p/4 + 2p = 12

8 - 4p + 8p/4 = 12

8 + 4p = 12 × 4

4p = 48 - 8

4p = 40

p = 40/4

p = 10

Thus, the value of p is 10

When this net is assembled, it will form a box.  To calculate the area of the outside surface, find the area of each section and add them together.  The formula for area of a rectangle is A=lw:

A1=4(2)=8

A2=4(3)=12

A3=4(2)=8

A4=2(3)=6

A5=4(3)=12

A6=2(3)=6

8+12+8+6+12+6=52

The area that was painted green is 52cm2.

Hope this helps!!

Answer:

C

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

Given x² + y² + 4x - 10y + 20 = 0

Collect x and y terms and subtract 20 from both sides. that is

x² + 4x + y² - 10y = - 20

To obtain standard form use the method of completing the square

add ( half the coefficient of the x/y term )² to both sides

x² + 2(2)x + 4 + y² + 2(- 5)y + 25 = - 20 + 4 + 25

(x + 2)² + (y - 5)² = 9 ← in standard form

with centre = (- 2, 5) and r = [tex]\sqrt{9}[/tex] = 3 → C

By rearranging the given equation to match the standard form of circle equation, we can determine the center of the circle to be (-2,5), and the radius to be 3.

The equation provided can be rewritten in the form (x - h)² + (y - k)² = r², wherein (h, k) denote the center coordinates of the circle, and r is the radius. To arrange it in this form, we group terms to complete the square for both x and y:

x² + 4x + y² - 10y = -20

⇒ (x² + 4x + 4) -4 + (y² - 10y + 25) - 25 = -20

⇒ (x + 2)² + (y - 5)² = 9

With this, we can identify the center of the circle to be at point (-2,5), and the radius is the square root of 9 which equals to 3. Hence, the correct answer is option C.

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