evaluate double integral r xe^x / y da r = [0,3] x [1,2]

Answer: If you are meaning for the number to be squared would be ten.

Step-by-step explanation:

49 divided by 2 equals 7, 7 plus 3 =10

The answer would be C. 10

To test for the significance of the model at a 5% significance level, the critical F value must be determined using the degrees of freedom and the F distribution table or statistical software. The calculated F value is then compared to the critical F value to determine if the model is statistically significant.

The significance of a model is determined by comparing the calculated F value to the critical F value at a given significance level. The critical F value is determined by the degrees of freedom for the numerator and denominator, and the significance level.

At a 5% significance level, the critical F value can be found using a F distribution table or a statistical software. The critical F value will be the value at which 95% of the F distribution falls below it, and 5% falls above it.

For example, if the degrees of freedom for the numerator are 2 and the degrees of freedom for the denominator are 10, the critical F value at a 5% significance level would be 4.10. If the calculated F value is greater than the critical F value, the model is considered to be statistically significant at the 5% level.

In conclusion, to test for the significance of the model at a 5% significance level, the critical F value must be determined using the degrees of freedom and the F distribution table or statistical software. The calculated F value is then compared to the critical F value to determine if the model is statistically significant.

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Answer: y = 2x/5 - 1

Explanation:

The equation of a line in the slope intercept form is expressed as

y = mx + c

where

m represents slope

c represents y intercept

The formula for calculating slope is expressed as

m = (y2 - y1)/(x2 - x1)

The given points are (0, -1) and (10, 3). thus,

x1 = 0, y1 = - 1

x2 = 10, y2 = 3

m = (3 - - 1)/(10 - 0) = (3 + 1)/10 = 4/10 = 2/5

By substituting m = 2/5 and c = - 1 into the slope intercept equation, the equation of the line is

y = 2x/5 - 1

the television station can show 10 45-second commercials per hour.

To convert hours into minutes, you simply multiply the number of hours by 60, since there are 60 minutes in an hour.

So, if you want to convert 3 hours into minutes, you would do:

3 hours x 60 minutes/hour = 180 minutes

Therefore, 3 hours is equivalent to 180 minutes.

There are 60 minutes in an hour, and 7 1/2 minutes is equal to 7.5 minutes.

So, the television station shows commercials for 7.5 minutes per hour.

We can convert 45 seconds to minutes by dividing it by 60:

45 seconds ÷ 60 = 0.75 minutes

To find out how many 45-second commercials the television station can show per hour, we can divide the total number of minutes of commercials by the length of each commercial:

7.5 minutes ÷ 0.75 minutes/commercial = 10 commercials

Therefore, the television station can show 10 45-second commercials per hour.

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Answer:

1/4 ÷ 2

Step-by-step explanation:

Answer:

the first option 1/4 ÷ 2

hope it helped!!!

Step-by-step explanation:

Hey there!!!!

Your required answer is option A.

The reason is.

When we solve it through elimination method we need to multiply second equation by "2" and then subtract to get "-4y" in 1st equation and "+4y" in 2nd equation cancelled.(As when we multiply equation 2 by 2 and subtract we get "-2y" as "+4y".)

So, it the equation seems like,

\(12 {x}^{2} + 4 {y}^{2} = 22\)

Now, this equation is made after multiplying it by 2 and subtracting the 1st and 2nd equation to solve the equation s.

So, the answer is option A.

Hope it helps...

Answer:

8

Step-by-step explanation:

the cubed root of 8 equals 2

if you quadruple 2 (multiply it by 4), you will get 8

Answer:

y = -4x - 2

Step-by-step explanation:

y = mx + b where

m = slope, and b = y-intercept

slope = -4 = m

y-intercept = -2 = b

y = mx + b

y = -4x - 2

Answer: y = -4x - 2

Hello !

Answer:

\(\Large \boxed{\sf x=-11}\)

Step-by-step explanation:

We want to find the value of x that satisfies the following equation :

\(\sf 5x+2=4x-9\)

Let's isolate x !

First, substract 4x from both sides :

\(\sf 5x+2-4x=4x-9-4x\\x+2=-9\)

Now let's substract 2 from both sides :

\(\sf x+2-2=-9-2\\\boxed{\sf x=-11}\)

Have a nice day ;)

Hello!

5x + 2 = 4x - 9

5x - 4x = - 9 - 2

x = -11

Answer:

$34.51

Step-by-step explanation:

To find 19% of 29, you first want to change the 19% to a decimal.

19% to a decimal is 0.19

Then you multiply the 0.19 by 29

29•0.19= 5.51

Now just add the 5.51 to the 29 to get the total

5.51+29=$34.51

Answer:

k < -4 or k > 13

Step-by-step explanation:

Let's take a look at the graph, we can see that the arrows point towards both directions, both dots are open, meaning that we can only have < and > signs. We can see that the arrow pointing to the left contains numbers that are less than -4, so that part of the compound inequality must be k < -4. And on the other side, they are numbers that are greater than 13, so that part must be k > 13. Thus, the answer must be d.

Hopes this helps.

Answer:

x = -6

Step-by-step explanation:

subtract 5 from both sides

2/3 x = -4

multiply by 3

2x = -12

divide by 2

x= -6

Answer:

2=x

Step-by-step explanation:

2/3x+5=1

2/3 is also like division so lets do it this way:

2÷3x+5=1

           -5    -5

______________________-

2÷3x=-4

·3x     ·3x

__________________-

2=-4·3x

+4   +4

______________-

6=3x

÷ 3    ÷3

_______________

2=x

Hope this helps

Answer:

Step-by-step explanation:

Potential energy=stored energy so say when the roller coaster stops somewhere they are storing energy.

In then when they just go down there would now be using kinetic energy.

Hope this helps have a great afternoon:)

Answer:

x=7   Thx pls mark as brainliest

Step-by-step explanation:

In order for a polygon to be a parallelogram, the polygon needs to be a four-sided rectangle type shape, with two sets of parallel sides.

For this square to be a parallelogram, all  

4

angles need to be  

90

º

. This will give us to the two sets of parallel sides.

Knowing this, and the fact that on of the angles is being bisected, we need only multiply the defined angle by two and set it equal to  

90

.

Answer: false

Step-by-step explanation:

Step-by-step explanation:

First I would look at the y intercept. In a linear equation, y = mx + b, b is the y-intercept and m is the slope. This means that (0,6) is a point on the line since at a y-intercept, the x value is 0. First you should plot this point.

Next, the slope is 4, meaning that for every 1 unit to the right, the line rises 4 units. You can count 1 to the right and 4 up from the y-intercept, which gives you (1,10), a second point on the line. After this, you can connect the two points and there you go, you have a graph!

Answer:

.53 pounds of dog food each day.

Step-by-step explanation:

Use PEMDAS to solve

Answer:

enough is the correct worf

Answer: 28

The distance between -18 and ten on a number line is 28.

Plz mark brainliest:)

Answer:

8

Step-by-step explanation:

Answer:

1

Step-by-step explanation:

9 - 3 divide 1/3 + 1

-3 divide by 1/3

9 - 9 + 1

0 + 1

1

It is 1, because you should use the order of pemdas. PEMDAS tells you what to calculate first, second, third and so on, until the calculation is complete.

PEMDAS is an acronym for the words parenthesis, exponents, multiplication, division, addition, subtraction.

Given:-

\( \: \)

\( \: \)

To find:-

\( \: \)

By using formula:-

\( {\color{hotpink}\bigstar} {\boxed{\sf {\green{ slope : m = \: \frac{y_2 - y_1}{x_2 - x_1} }}}}\)

Solution:-

\( \sf \: m = \frac{y_2 - y_1}{x_2 - x_1} \)

\( \: \)

where ,

\( \: \)

\( \: \)

\( \sf \: m = \frac{( -2 ) - ( -3 ) }{1 - 2} \)

\( \: \)

\( \sf \: m = \frac{ - 2 + 3}{ \: 1 - 2} \)

\( \: \)

\( \sf \: m = \cancel \frac{1}{ - 1} \)

\( \: \)

\( \underline{\boxed{ \sf{ \blue{ \: m = -1 \: }}}}\)

\( \: \)

━━━━━━━━━━━━━━━━━━━━━━━

hope it helps:)

We have a triangle with angles: 66 deg, 57 deg and (3x+21).

We have to solve for x.

We know that the sum of the interior angles of a triangles is 180 degrees.

Then, we can write and solve for x as:

The value of x is 12.

Answer: A) 12

You have learned that the formula for volume is

V = l w h and that it may also be written as V = B h.

Take note that the formula V = l w h only applies to rectangular prisms and cubes when used in its simplest form.

This is further explained below.

Generally, It entails the disorganized loading of completed plastic or metal pieces into a container, sometimes a corrugated box. This kind of packing results in clustered containers or closures that have been hurriedly put together with parts rubbing against one another.

The cross-section of a rectangular prism is square. Consists of two sets of mutually parallel bases. There are eight corners and six sides on a rectangular prism. A cuboid, in that it can be described by its width at the base, its height, and its length.

In conclusion, Rectangular prisms and cubes are the only objects for which the version, V = l w h, is true.

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Answer:

negative slope.............

Answer:

c

Step-by-step explanation:

The maximum volume of the cylinder is 27147.355 cm² at the maximum point.

What is volume of cylinder?

The density of a cylinder is determined by its volume, which represents how much material may be immersed in it or carried inside of it. The formula r2h, where r is the radius of the circular base and h is the height of the cylinder, determines the volume of a cylinder. The substance could be a liquid amount or something else that can be evenly put into the cylinder.

The formula for the volume of the cylinder v = \(\pi r^2\)h,

To find the maximum volume of the cylinder we apply the condition of maxima \(\frac{dv}{dr}\)  = 0.

Let r cm be the radius and h cm be the height of the closed cylinder.

Then, Total surface area of the cylinder = \(2\pi r(r+h)\)

                                                   5000      = \(2\pi r^{2} +2\pi rh\)

                                                    h     =    \(\frac{5000-2\pi r^{2} }{2\pi rh}\)............(1)

Volume of the cylinder v = \(\pi r^2h\)

Substitute the value of h  in the above equation

                                      = \(\pi r^2\) × \(\frac{5000-2\pi r^{2} }{2\pi rh}\\\)

                                      = \(\frac{r}{2}\) ×  \(5000-2\pi r^2\)

                                   v = \(2500r-\pi x^{3}\) ..............(2)

Now, for the maximum volume of the cylinder   dv/dr= 0

                                                      \(\frac{d(2500r-\pi x^{3})}{dr}\)         =0

                                                            \(3\pi r^{2} =2500\)

                                                               \(r^{2} =\frac{2500}{3\pi }\)

                                                              r=\(\frac{50}{\sqrt{3\pi } }\)

                                                           r= 27147.355

Hence, The maximum volume of the cylinder is 27147.355 at the maximum point r= \(\frac{50}{\sqrt{3\pi } }\).

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Answer:

No, but if it was how many studens school like math then yes

in Step-by-step explanation:

Answer: r+7

Whatever his age is now, we add 7 to it. So we simply add 7 to r getting r+7.

Example: Say he is 10 years old now

r = 10

r+7 = 10+7 = 17

meaning he will be 17 seven years from now

If the final statement when solving a system of linear equations is "5 = 0", it means that: E. none of these statements are true.

A solution to a system of linear equations is a set of values for the variables that satisfy all the equations in the system simultaneously. In other words, it is a collection of values for the variables that make all the equations in the system true at the same time.

The solution can be represented graphically as the intersection of the lines or planes defined by the equations in the system, or it can be represented algebraically as a set of values for the variables.

The equation "5 = 0" is false. It means that 5 cannot be equal to 0. This could indicate that the system of linear equations has no solution or that there is an error in the method being used to solve it.

Therefore, the answer is: "none of these statements are true".

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Answer:

minimum area: 30.40 cm²

maximum area: 30.52 cm²

Step-by-step explanation:

Applying the distributive property, the solutions are given as follows:

1. No solution.

2. r = -2.

3. p = -7.

4. m = 0.

5. a = -7.

6. n = 1.

7. v = 1.

8. x = All real values.

The distributive property is used when the outside term multiplies each of the inside terms, then if necessary, the like terms are used.

For this problem, the property is used to isolate the variables and find the desired result of the expressions.

6x + 1 = -6(1 - x)

6x + 1 = -6 + 6x

0x = -7

No solution. (division by 0).

4(3r + 4) = -8(2r + 5)

12r + 16 = -16r - 40

28r = -56

r = -2.

11 + 2p = p + 4

p = -7.

2(-6m - 3) = 6(5m - 1)

-12m - 6 = 30m - 6

42m = 0

m = 0.

-3 + 5a = 4a - 10

a = -7.

-16 + 3n = -8 - 5n

8n = 8

n = 1.

-22 + 8v = 7(4v - 6)

-22 + 8v = 28v - 42

20v = 20

v = 1.

3(2x - 4) = 2(3x - 6)

6x - 12 = 6x - 12

0 = 0

x = All real values.

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