I am so confused, I am terrible at math.

Answer:

7. -27 + 6y = 3y - 9

6y-3y = -9+27

3y = 18

3=6

8. 3(m-2) = -2(m-3)

3m-6 = -2m + 6

3m+2m= 6+6

5m=12

m= 12/5

Answer:

It is 9

Step-by-step explanation:

9x - 2 = 79

9x = 81

x = 9

Answer:

2

Step-by-step explanation:

g(x)=x^2+1

g(1)=(1)^2+1

g(1)=(1)(1)+1

g(1)=1+1

g(1)=2

Answer:

All points on line CD are equidistant from A and B

Step-by-step explanation:

Given that point A is the center of circle A and point B is the center of circle B,  and the circumference of circle A passes through the center of circle B which is point B and vice versa.

Therefore we have;

The radius of circle A = The radius of circle B

Which gives;

The distance of the point C to the center A is equal to the distance of the point C to the center B

Similarly, the distance of the point D to the center A is equal to the distance of the point D to the center B

So also the distances of all points on the line from the center A  is equal to the distances of all points on the line from the center B.

The solution involves an integral that cannot be evaluated in closed form, so the answer cannot be simplified further.

To solve the given differential equation (DE), we can use the integrating factor method. The steps are as follows:

1. Multiply both sides of the DE by the integrating factor, which is the exponential of the integral of the coefficient of y. In this case, the coefficient of y is (x + 2), so the integrating factor is e^(∫(x+2)dx) = e^(x^2/2 + 2x).

So, we have: (x + 1) e^(x^2/2 + 2x) dy/dx + (x + 2) e^(x^2/2 + 2x) y = 2x e^(x^2/2 + 2x) e^(-xy)

2. Notice that the left-hand side of the DE is the product of the derivative of y with respect to x and the integrating factor, so we can apply the product rule of differentiation to obtain:

d/dx [ e^(x^2/2 + 2x) y ] = 2x e^(x^2/2 + 2x) e^(-xy)

3. Integrate both sides of the previous equation with respect to x to obtain:

e^(x^2/2 + 2x) y = - e^(-xy) + C

where C is the constant of integration.

4. Solve for y by dividing both sides by the integrating factor:

y = [- e^(-xy) + C] e^(-x^2/2 - 2x)

This is the general solution of the given DE.

Note that the solution involves an integral that cannot be evaluated in closed form, so the answer cannot be simplified further.

Learn more about equation

brainly.com/question/29538993

#SPJ11

Answer:

Decimal--x= -1.39

Fraction--x= -139/100

Step-by-step explanation:

You want to get x by itself in this problem

You have to distribute the 3 into the parenthesis first

1.2/8=15x+21

Now you can do 2 of either things....you can either divide 1.2/8 and then subtract 21 from both sides or you can just subtract 21 from both sides without dividing. I will use option 2.

1.2/8-21=15x+21-21

So now you cancel out the 21 on the right side and get...

-20.85=15x

Now divide by 15

-1.39=x in fraction form -139/100=x

Hope this helped!

Answer:

72

Explanation:

First, we can find the top and bottom smaller squares of the rectangular prism. Since we are working with a variety of rectangles, we only need to use the equation L×W.

To start with, let's multiply 2×3, which gives us 6, the surface area of both the bottom and top rectangles, so now we need to multiply it by 2 to account for both of them. 6×2=12

Now, we'll find the surface area of the bigger rectangles in the middle, which are 6 by 3, so again we will need to multiply length times width, then by 2 to count both rectangles. 6×3=18×2=36

Finally, we can find the surface area of the smaller rectangles in the middle, which are 6 by 2. 6×2=12, then multiply by 2 since there are 2 of those rectangles, 12×2=24

Now to find the total surface area, we need to add the gathered surface area from each shape, 12+36+24=72

Answer:

AB= 12                      AB=18

Step-by-step explanation:

sin(30)=AB/AC

=> AB=Sin(30)*AC

sin(30)=0.5

=>AB=0.5*24=15

sin(30)=AB/AC

=> AB=Sin(30)*AC

sin(30)=0.5

=>AB=0.5*36=18

Answer:

part a: AB = 12cm

part b: AB = 18cm

Step-by-step explanation:

sin(angle)=OPP/HYP

sine of an angle is a ratio of two sides of a right triangle. For sine, the ratio is the opposite side over the hypotenuse. In part a the marked angle is 30° and AB is the opposite side. The hypotenuse is given, 24cm.

So the sin 30°

= opp/hyp

= AB / 24

also given is the fact that sin30°=.5

Substitute that into our equation also.

sin30° = AB/24

.5 = AB/24

multiply both sides by 24.

.5×24 = AB

12 = AB

AB is 12 cm.

Part b is an identical calculation except the hypotenuse is 36cm.

sin30° = AB/36

.5 = AB/36

.5×36 = AB

18 = AB

AB is 18cm.

They may be trying to lead you to discover some shortcut patterns in a 30°-60°-90° triangle. That is that the short leg is HALF the hypotenuse OR the hypotenuse is double the short leg.

The population proportion who participated in voting (63%) is higher than the sample proportion from this survey (58.91%).

To determine whether the population proportion who participated in voting or the sample proportion from the survey is higher, we need to compare the percentages.

The population proportion who participated in voting is given as 63% of all registered voters.

This means that out of every 100 registered voters, 63 participated in voting.

In the survey of retired voters, 162 out of 275 participants voted. To calculate the sample proportion, we divide the number of retired voters who participated (162) by the total number of retired voters in the sample (275) and multiply by 100 to get a percentage.

Sample proportion = (162 / 275) \(\times\) 100 ≈ 58.91%, .

Comparing the population proportion (63%) with the sample proportion (58.91%), we can see that the population proportion who participated in voting (63%) is higher than the sample proportion from this survey (58.91%).

Therefore, based on the given data, the population proportion who participated in voting is higher than the sample proportion from this survey.

It's important to note that the sample proportion is an estimate based on the surveyed retired voters and may not perfectly represent the entire population of registered voters.

For similar question on population proportion.

https://brainly.com/question/29516589  

#SPJ8

The space curve C is a vertical line passing through the point (4, 0) of the elimination method. Substituting z = 0 into the equations (1) and (2), the projection of C onto the xy-plane is found.

Given the equations, we have:

x + 3y + 5z = 4 .....(1)

x + y - 2z = 4 .......(2)

The surfaces intersect in a space curve C. The projection of C onto the xy-plane can be found by considering z = 0, as the z-component of C is always zero, we'll be left with the projection of the curve on the xy-plane.

Thus, substituting z = 0 into the equations (1) and (2), we have:

x + 3y = 4 ...........(3)

x + y = 4 ............(4)

We can now solve the system of equations (3) and (4) using the elimination method. To do this, we subtract equation (4) from equation (3) to obtain:2y = 0y = 0Substituting y = 0 into equation (4), we get:x = 4The projection of C onto the xy-plane is the point (4, 0). Thus, the space curve C is a vertical line passing through the point (4, 0).

To know more about space curve Visit:

https://brainly.com/question/31493687

#SPJ11

Answer:

less than 5%

Step-by-step explanation:

In the USA less than 5% of children under the age of 11 study a language other than English at school

Hopefully this helped- have a good day)

Answer:

10 by 18

Step-by-step explanation:

10.5 X 2 = 21

2/3 = 0.666666667

To evaluate the limit, we need to find the value of lim(h→0) [(r(t+h) - r(t))/h] where r(t) is a vector function.


Given the vector function r(t) = , we first need to find r(t+h):
r(t+h) = .

Next, we find the difference between r(t+h) and r(t):
(r(t+h) - r(t)) = .

Now, we divide the difference by h:
[(r(t+h) - r(t))/h] = <(a(t+h) - a(t))/h, (b(t+h) - b(t))/h, (c(t+h) - c(t))/h>.

Finally, we take the limit as h approaches 0:
lim(h→0) [(r(t+h) - r(t))/h] = .


To find the value of the limit, we need to individually calculate the limits for each component of the vector. The final answer will be in the form of a vector , where lim_a, lim_b, and lim_c are the limits of the individual components.

To learn more about function visit:

https://brainly.com/question/12431044

#SPJ11

For situation 1, the z-value is approximately 1.96, and for situation 2, the z-value is approximately 0.84.

To find the value of z for each situation, we need to use the standard normal distribution table or a calculator. The standard normal distribution has a mean of 0 and a standard deviation of 1.

1. Situation 1: To find z for a given probability, we can use the cumulative distribution function (CDF). For example, if we want to find the z-value for a probability of 0.95, we can find it on the table or use a calculator. The z-value for a probability of 0.95 is approximately 1.96.

2. Situation 2: To find z for a given percentile, we can use the inverse cumulative distribution function (ICDF). For example, if we want to find the z-value for the 80th percentile, we can find it on the table or use a calculator. The z-value for the 80th percentile is approximately 0.84.

Remember to round your answers to two decimal places as requested.

In conclusion, for situation 1, the z-value is approximately 1.96, and for situation 2, the z-value is approximately 0.84.

Know more about z-value here,

https://brainly.com/question/32878964

#SPJ11

Answer:

No, he is not correct he spends 25% more time on his homework

Step-by-step explanation:

25/20 =1.25 -1 =.25 x 100 =25% more time spent on his HW.

Answer:

Yes he is correct

Step-by-step explanation:

125% × 20 =

(125 ÷ 100) × 20 =

(125 × 20) ÷ 100 =

2,500 ÷ 100 =

25;

Answers:

u = 18

v = 20

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

Work Shown:

The leg YZ is congruent to the left FH

This means YZ = FH and that leads to u+v-18 = 10u-8v

The hypotenuse ZX is congruent to the hypotenuse HG

This means ZX = HG and we get the equation 14v-14u+32 = v+u+22

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

The system of equations we have so far is

u+v-18 = 10u-8v

14v-14u+32 = v+u+22

Let's get the equations into standard form

Start with the first equation

u+v-18 = 10u-8v

u+v = 10u-8v+18

u+v-10u+8v = 18

-9u+9v = 18

-9(u-v) = 18

u-v = 18/(-9)

u-v = -2

Note how we can solve for the variable u to get

u = v-2

which we'll use later

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

Let's get the other equation into standard form as well

14v-14u+32 = v+u+22

14v-14u-v-u = 22-32

-15u+13v = -10

Now plug in u = v-2 and solve for v

-15u+13v = -10

-15(v-2) + 13v = -10

-15v+30+13v = -10

-2v+30 = -10

-2v = -10-30

-2v = -40

v = -40/(-2)

v = 20

Which means,

u = v-2

u = 20-2

u = 18

Answer:

\(2 \sqrt{ - 2 } \)

maybe?

Points M and N will be located on the number line as:

M is at -15

N is at 3.

Here, we have,

to Find the Coordinate of a Point on a Number Line:

The number line gives us an idea of how real numbers are ordered, where we have the negative numbers to the left, and the positive numbers to the right.

The distance between two points on a number line is the number of units between both points.

Given that point L is at -6 on a number line, thus:

Point M is 9 units away from point L = -6 - 9 = -15

Point N is 9 units away from point L = -6 + 9 = 3

Therefore, points M and N will be located on the number line as:

M is at -15

N is at 3.

Learn more about location on a number line on:

brainly.com/question/4619309

#SPJ1

Answer:

Rotational Symmetry

Step-by-step explanation: It stays the same when rotated

Answer: Yes

Step-by-step explanation: can be written as 6 17/50

Answer: yes because its a terminating number

Las cantidades requeridas de ingredientes para la preparación de alfajores son 3,5 barras de mantequilla, 3,5 bolsas de manjar, 2 tazas de maicena y 9 / 4 tazas de harina.

Sabrina entrega un vuelto de 10,4 soles por el pago de 100 soles por la compra de 7 docenas de 12,80 soles.

En este problema debemos determinar la cantidad requerida de ingredientes para la preparación de alfajores, se tiene como referencia una tabla de preparación, de modo que se puede determinar las cantidades requeridas mediante regla de tres simple:

y' = (p' / p) × y

Where:

A continuación, determinamos los ingredientes requeridos y los faltantes en cada caso:

Barra de mantequilla:

y' = (60 / 24) × 1

y' = 2,5 barras

y'' = 6 barras - 2,5 barras

y'' = 3,5 barras

Bolsas de manjar

y' = (60 / 24) × 1

y' = 2,5 bolsas

y'' = 6 bolsas - 2,5 bolsas

y'' = 3,5 bolsas

Maicena

y' = (60 / 24) × (1 / 2)

y = 5 / 4 tazas

y'' = 5 / 4 tazas - 1 / 4 tazas

y'' = 2 tazas

Tazas de harina

y' = (60 / 24) × (3 / 2)

y' = 15 / 4 tazas

y'' = 15 / 4 tazas - 3 / 2 tazas

y'' = 9 / 4 tazas

Tazas de azúcar en polvo

y' = (60 / 24) × (1 / 2)

y' = 5 / 4 tazas

y'' = 5 / 4 tazas - 10 tazas

y'' = - 35 / 4 tazas (Tiene exceso de azúcar en polvo).

En consecuencia, los faltantes para la preparación de 60 alfajores son los siguientes: 3,5 barras de mantequilla, 3,5 bolsas de manjar, 2 tazas de maicena y 9 / 4 tazas de harina.

Por último, determinamos el vuelto tras el pago de 100 soles peruanos:

C = 100 soles - 7 · 12,80 soles

C = 10,4 soles

Para aprender más sobre regla de tres simple: https://brainly.com/question/30605724

#SPJ1

1. (A)  Section titles  (lines starting with %% followed by a space and then a title).

2. (B)  Automatically pause code execution at the start of each section when running a script. (This is not a purpose of code in the MATLAB Editor.)

3. All these functions operate element-wise on each element of the matrix X and return a matrix of the same size.

The source of the section headers in the resulting document when publishing a script from the MATLAB Editor is:

a. Section titles (lines starting with %% followed by a space and then a title).

The statement that is not true about the purpose of code in the MATLAB Editor is:

b. Automatically pause code execution at the start of each section when running a script. (This is not a purpose of code in the MATLAB Editor.)

3. The commands that return a matrix of the same size as x, given a non-scalar matrix X, are:

a. mean(x)

b. sin(x)

c. log(x)

d. sum(x)

e. std(x)

f. sqrt(x)

All these functions operate element-wise on each element of the matrix X and return a matrix of the same size.

To know more about Section titles click here :

https://brainly.com/question/31723428

#SPJ4

The lower and the upper limit for a 99% confidence interval would be approximately 37.51 and 50.03

Here,

Mean = 43.77

Standard deviation (s)= 12.43655

n= 30

So,

   CI= mean ± t (s/√n)

      = 43.77±2.756(12.43655/√30)

      = 43.77±6.26

      = 37.51,50.03

So, the lower and upper limit would be 37.51 and 50.03

To know more about Limit, refer to:

http://brainly.com/question/27517662

#SPJ4

Answer:

Watershed is a drainage basin in a particular area where precipitation collects or stores and drains off in a river or bay etc.

hope it helps!

Answer: A watershed describes an area of land that contains a common set of streams and rivers that all drain into a single larger body of water, such as a larger river, a lake or an ocean.  the Mississippi River watershed is an enormous watershed.  Small watersheds are usually part of larger watersheds.

The two solutions of the quadratic equation are:

x = 60.53 and x = -60.5

Here we have a simple quadratic equation where we don't have a linear term, it is:

x² = 3664

To solve this, we just need to apply the square root in both sides, we will get:

x = ±√3664

We have the plus/minus sign because of the rule of signs.

Then the solutions are:

x = ±60.53

These are the two solutions of the quadratic equation.

Learn more about square roots at:

https://brainly.com/question/428672

#SPJ1

The quadratic equation has two solutions x = 60.53 and x = -60.5

The following is a simple quadratic equation without a linear term:

x² = 3664

To solve this, we simply multiply both sides by the square root, yielding:

x = ±√3664

Because of the rule of signs, we have the plus/minus sign.

The solutions are as follows:

x = ±60.53

These are the two quadratic equation solutions.

More information regarding square roots can be found at: brainly.com/question/428672

#SPJ1

Answer:

definition, an arc subtended by a central angle of some given measure has the same measure.

Answer:

definition, an arc subtended by a central angle of some given measure has the same measure.

Step-by-step explanation:

Believe Meh What she said it works

Answer: The first 3 options

Step-by-step explanation:

You have to make sure that the given variable would be able to equal -5. The  \(\geq\) sign in the second and third answer show that the variable could be equivalent to -5.

Answer:

g > -7, f ≤ -5 and g ≥ -5

Step-by-step explanation:

the < and > symbols mean less than and greater than respectively, but not including. Therefore -5 cannot be a valid solution if the range is (for example) g > -5. However, ≤ and ≥ mean less/greater than or equal to, so -5 would be a valid solution for g ≥ -5 (for example).

To determine the number of gallons of paint needed to cover office 143, we need to know the square footage of the office.

Once we have that information, we can divide the square footage by the coverage rate per gallon to calculate the required amount of paint.

Let's assume the square footage of office 143 is 800 square feet.

Number of gallons needed = Square footage / Coverage rate per gallon

Number of gallons needed = 800 square feet / 50 square feet per gallon

Number of gallons needed = 16 gallons

Therefore, you would need approximately 16 gallons of paint to cover office 143, assuming each gallon covers 50 square feet.

Learn more about square feet here : brainly.com/question/30678567

#SPJ11