PLEASE HELP!! I have such a hard time in math and have been working all day

Answer:

(3x^2 + 5x +3) (x + 5)

Answer:

10.25641...% or 10.3%

Step-by-step explanation:

(86/78)/78 = 8/78

8/78 * 100 = 400/39 = 10.25641...%

Answer:

Centroid

Step-by-step explanation:

is it right please  tell me down below thank you

put x=4

[tex]\\ \rm\longmapsto y=40(0.6)^4[/tex]

[tex]\\ \rm\longmapsto y=40(2.4)

[tex]\\ \rm\longmapsto y=40(0.13)

[tex]\\ \rm\longmapsto y=5.2ft[/tex]

Step-by-step explanation:

please I don't understand the question

Answer:

Step-by-step explanation:

We will need to rewrite the Pythagorean Theorem

A^2 + B^2 = C^2

Substitute. tIn this case:

18^2 + x^2 = 82^2

Subtract 18^2

x^2 = 82^2 - 18^2

In order to get x alone, take the root:

x = sqrt(82^2 - 18^2)

And solve:

x = 80

Answer:

This question seems to be somewhat incomplete. Could you maybe provide some more details about the question? And could we also see your options? I would like to help but I need as much information as possible. Thanks!

Answer:

Measure of side a: 6

Measure of side b: 8

Measure of side c: 10

Side a/c: 6/10 = 3/5

Side b/c: 8/10 = 4/5

Side a/b: 6/8 = 2/3

Step-by-step explanation:

[tex]\beta=59\ degrees[/tex]

Step-by-step explanation:

[tex]< ABC+ < BAC=90\ degrees\\ The\ acute\ angles\ of\ a\ right\ triangle\ are\ complementary.[/tex]

[tex]\beta+31\ degrees=90\ degrees\\ Substitute\ < ABC=\beta, < BAC=31\ degrees\ into\\ < ABC+ < BAC=90\ degrees[/tex]

[tex]\beta=59\ degrees\\ Calculate\ \beta+31\ degrees=90\ degrees[/tex]

Answer:

25/6 pizzas are needed. (4 1/6)

Step-by-step explanation:

25 x 1/6 is 4 1/6

The augmented matrix is,

[tex]\left(\begin{array}{ccccc}1&-1&-4&|&5\\2&0&2&|&0\\4&1&1&|&3\end{array}\right)[/tex]

We have given system of linear equation is,

[tex]x - y - 4z = 5,2x + 2z = 0 ,4x +y +z = 3.[/tex]

In an augmented matrix, each row represents one equation in the system and each column represents coefficients (with signs) of variables or the constant terms.

So, the first row is

[tex]1\ -1\ -4\ 5[/tex]

the second row is

[tex]2\ 0\ 2\ 0[/tex]

and the third row is

[tex]4\ 1\ 1\ 3[/tex]

Therefore the augmented matrix for this linear system is,

[tex]\left(\begin{array}{ccccc}1&-1&-4&|&5\\2&0&2&|&0\\4&1&1&|&3\end{array}\right)[/tex]

To learn more about the augmented matrix visit:

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The augmented matrix for the given linear equations will be constructed as follows

[tex]\left[\begin{array}{ccc}1&-1&-4\\2&0&2\\4&1&1\end{array}\right] \left[\begin{array}{ccc}5&\\0\\3\end{array}\right][/tex]

The augmented matrix is generally a matrix form of the given linear equations and the coefficient of the variables are arranged in the form of a matrix.

The given equation has three variables so the matrix form will be of [tex]3\times3[/tex]

The given linear equations are

[tex]x-y-4z=5\\2x+0y+2z=0\\4x+y+z=3[/tex]

From the above equations, we will make an augmented matrix.

[tex]\left[\begin{array}{ccc}1&-1&-4\\2&0&2\\4&1&1\end{array}\right] \left[\begin{array}{ccc}5&\\0\\3\end{array}\right][/tex]

The first equation will be followed by the first row of the matrix and the rest will be followed the same.

Thus the augmented matrix for the given linear equations will be constructed as follows

[tex]\left[\begin{array}{ccc}1&-1&-4\\2&0&2\\4&1&1\end{array}\right] \left[\begin{array}{ccc}5&\\0\\3\end{array}\right][/tex]

To learn more about the Augmented matrix follow

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Answer:

11w + x

Step-by-step explanation:

Answer:

40% I think because it is easy to turn a number into percentage.

Answer:

yes

Step-by-step explanation:

the equation of proportion is

y = kx ← k is the constant of proportion

y = [tex]\frac{3}{8}[/tex] x ← is in proportional form

By finding the linear equation that relates distance and time, we can see that the complete table is:

time (hours)   distance (miles)

2                              100

1.5                             75

t                              (50)*t

1                                50

6                               300

d/(50)                          d

After a small online search, I've found that the table is:

time (hours)   distance (miles)

2

1.5

t  

                                50

                               300

                                  d

Now, remember the relation:

distance = speed*time.

In this case, we know that the speed is 50 mi/h, so if we define d as the distance and t as the time, we can write:

d = (50mi/h)*t

To complete the table, we just replace the value that appears in the table, and then we solve the equation for the other variable.

First we have t = 2 hours:

d = (50 mi/h)*2h = 100 mi

Then we have t = 1.5 hours

d = (50 mi/h)*1.5 h = 75 mi

Then we assume that we evaluate in t, so there we just write the equation:

d = (50 mi/h)*t

Now we go to the other side of the table, now we evaluate d, so we can write:

t = d/(50 mi/h)

(that is what goes in the table when we need to evaluate in d).

Then the fourth place in the table has d = 50 mi, replacing that:

t = (50mi)/(50 mi/h) = 1h

And finally, we evaluate in d = 300mi

t = (300 mi)/(50 mi/h) = 6h

Then the complete table is just:

time (hours)   distance (miles)

2                              100

1.5                             75

t                              (50)*t

1                                50

6                               300

d/(50)                          d

If you want to learn more about speed, you can read:

https://brainly.com/question/4931057

Answer:

$0.38

Step-by-step explanation:

Boxes of granola are on sale of 2 for 4. 50. There are 12 ounces of granola in each box. What is the unit price of dollars per pound?

4.5/12 = $0.38 per pound

The unit of each dollar per pound is $0.38

Hope this helps!

Answer: 1/2 and 2

Step-by-step explanation:

The slope of a line, where the equation is in y=mx+b form, is m.

Answer:

Slope is 6 and Y intercept is 4.. You can look the image above.

The length of EF from the given diagram is 2.98

The formula for calculating the length of an arc is expressed as;

L = rtheta

where

r is the radius

theta is the subtended angle

Given the following

r = 7/9π

theta = 70 degrees

L = 70/360 * 2 * 7/9π * π

L = 2.98

Hence the length of EF is 2.98

Learn more on length of an arc here; https://brainly.com/question/2005046

Answer:

Step-by-step explanation:

The value of x is 15, y is 5 and z is 17 units in the given triangle.

Trigonometry is a branch of mathematics that studies relationships between side lengths and angles of triangles.

First let us find value of y

We know that hypotensue / leg = leg/y

20/10 = 10/y

Apply cross multiplication

20y=100

y=5

Now let us find x value

20-y=x

20-5=x

x=15

The altitude is √5.15= √75

=8.6

Now by pythagoras theorem, we find value of z

x²+75 = z²

15²+75 = z²

225+75= z²

300= z²

z=17.3

Hence, the value of x is 15, y is 5 and z is 17 units in the given triangle.

To learn more on trigonometry click:

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#SPJ2

Using the z-distribution, as we have the standard deviation for the population, it is found that the 99% confidence interval for the population mean is given by:

[tex]\overline{x} \pm 2.58\frac{s}{\sqrt{n}}[/tex]

The confidence interval is:

[tex]\overline{x} \pm z\frac{s}{\sqrt{n}}[/tex]

In which:

99% confidence level, hence[tex]\alpha = 0.99[/tex], z is the value of Z that has a p-value of [tex]\frac{1+0.99}{2} = 0.995[/tex], so [tex]z = 2.58[/tex].

The other parameters are symbolic, hence the interval is given by:

[tex]\overline{x} \pm 2.58\frac{s}{\sqrt{n}}[/tex]

More can be learned about the z-distribution at https://brainly.com/question/25890103

Answer: Volume = 349376 cm^3

Step-by-step explanation:

The volume of a rectangular prism is the length*width*height.

We can plug in the values given:

Volume = 412 cm * 4 cm * 212 cm

Volume = 349376 cm^3

Answer:

the awnser is 3 over 9

Step-by-step explanation: bc i like suck\

iykyk

Answer:

C.14.4

Step-by-step explanation:

Answer:

first is -20 second is -30 and if you add those it is -50

Answer:

lol

Step-by-step explanation:

aaaaaaaaa stop brainly

Answer:

the guy that invented umbrellas didnt know what to call it so he said "ummm... brella"

Step-by-step explanation:

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

Explanation:

The "move down 7" means the y coordinate 8 becomes 8-7 = 1

We subtract 7 from the y coordinate.

The "move right 8 units" means we add 8 to the x coordinate to get 0+8 = 8

Therefore, the point (0,8) moves to (8, 1)

Check out the diagram below.

Answer:

x^2 - 10x + 9

Step-by-step explanation:

Zeros would be 9 and 1, so the equation would be (x-9)(x-1), and multiplying with FOIL gives us x squared -10x+9

Answer:

The angles 53 and 127 are supplementary.

The angles 56 and 34 are complementary.

The angles 67 and 67 are neither.

Step-by-step explanation:

Supplementary angles are two angles that add up to 180 degrees.

Complementary angles are two angles that add up to 90 degrees.

Add the angles found in each choice to get 180, 90, and 134.