Need help with number 2 7 8 9 10

Answer:

6

Step-by-step explanation:

Volume of Rectangular Prism: (l)(w)(h)

8 x 4 x ? = 192

32 x ? = 192

/32        /32

height = 6

To check work:

(8)(4)(6) = 192

Brand B contains 3% saline solution by volume.

The correct option is B.

We have,

Brand A was a six gallon 18% saline solution.

Final, she 18 gallon 8% saline solution mixture.

let the percentage of saline solution in brand B be x.

So, volume of saline solution

= 18% of 6 gallons  + x% of (18 - 6) gallons

Then the equation is given as,

0.18(6) + 0.01x(18 - 6) = 0.08(18)

1.08 + 0.12x = 1.44

0.12x = 0.36

x = 3

Thus, the percentage of saline solution in brand B is 3%.

Learn more about the percentage here:

brainly.com/question/8011401

#SPJ1

Answer:

7%

Step-by-step explanation:

All angles are 90 degrees.Rhombus: All sides are of equal length.Square: All angles are 90 degrees and all sides are of equal length

a) To construct a triangle in GeoGebra, we can follow the steps below:

Step 1: Open GeoGebra and select the ‘Polygon’ tool.

Step 2: Select the ‘Triangle’ option.

Step 3: Click three points anywhere on the graph.

Step 4: Once you have drawn the triangle, you can use the ‘Angle’ tool to measure all the angles in the triangle. Similarly, use the ‘Length’ tool to measure the length of each side of the triangle.To identify the type of triangle, we can use the following properties:Acute Triangle: All angles of the triangle are less than 90 degrees.Right Triangle: One of the angles in the triangle is 90 degrees.Obtuse Triangle: One of the angles of the triangle is greater than 90 degrees.Scalene Triangle: All sides of the triangle are of different lengths.Isosceles Triangle: Two sides of the triangle are of the same length.Equilateral Triangle: All sides of the triangle are of the same length.To construct a quadrilateral in GeoGebra, we can follow the steps below:

Step 1: Open GeoGebra and select the ‘Polygon’ tool.

Step 2: Select the ‘Quadrilateral’ option.

Step 3: Click four points anywhere on the graph.

Step 4: Once you have drawn the quadrilateral, you can use the ‘Angle’ tool to measure all the angles in the quadrilateral. Similarly, use the ‘Length’ tool to measure the length of each side of the quadrilateral.To identify the type of quadrilateral, we can use the following properties:Irregular Quadrilateral: All sides and angles of the quadrilateral are of different lengths and measures.Trapezium: Only one pair of opposite sides is parallel.Parallelogram: Opposite sides are parallel.Rectangle:.b) Since we need to add a screenshot of the work done in GeoGebra, we cannot add it here. However, while you construct the triangle and the quadrilateral, you can keep adding the measure of angles and sides to find the properties of the figure. You can then use the Text command available in GeoGebra to describe the type of triangle or quadrilateral that you have constructed. To use the Text command in GeoGebra, follow the steps below:

Step 1: Select the ‘Text’ tool from the toolbar

.Step 2: Click anywhere on the graph to add the text box.

Step 3: Type the text in the text box.

Step 4: Customize the font, color, and size of the text as required.

for more search question length

https://brainly.com/question/28322552

#SPJ8

The elephant grass will grow 105/4 inches in 7 days

The elephant grass grows 3 3/4 inches in a day

The number of inches it can grow in 7 hours can be calculated as follows

15/4= 1

x= 7

cross multiply both sides

x= 15/4 × 7

x= 105/4

Hence the elephant grass will grow 105/4 inches in 7 days

Read more on inches here

https://brainly.com/question/10891760?referrer=searchResults

#SPJ1

When a shape is reflected, it must be reflected over a line

The reflection rule is: \(R_{x = 2}(\triangle D EF) = \triangle D'E'F\)

The coordinates of the preimage are:

D(3,6), E(-4,-3), F(6,1)

The coordinates of the image are:

D'(1,6), E'(8,-3), F'(-2,1)

From the given coordinates, we have the following observations

This is shown as follows:

D(3,6) and D'(1,6)

The y-coordinate is:

\(y = 6\)

The average of the x-coordinates

\(x = \frac{3 + 1}{2}\)

\(x = 2\)

E(-4,-3) and E'(8,-3)

The y-coordinate is:

\(y = -3\)

The average of the x-coordinates

\(x = \frac{-4 + 8}{2}\)

\(x = 2\)

F(6,1) and F'(-2,1)

The y-coordinate is:

\(y =1\)

The average of the x-coordinates

\(x = \frac{6 -2}{2}\)

\(x = 2\)

Since the y-coordinates remains unchanged and the average of the x-coordinates is 2.

Then, we can conclude that the triangle was reflected over line \(x = 2\)

Hence, the reflection rule is:

\(R_{x = 2}(\triangle D EF) = \triangle D'E'F\)

Read more about reflections at:

https://brainly.com/question/17983440

Answer:

The first coupon with $550 off

Step-by-step explanation:

773.50-550= 223.5 (first coupon)

773.50×(100%-70%)=232.05(second coupon)

232.05>223.5

first one will save more money

Answer:

-19 -21

Step-by-step explanation:

ez

The solution for x, y, and z is x = 2, y = 2, and z = 2.

To solve the equation (35)"4(23)"5(25)"7 = 2"x3"y*5"z, let's break it down step by step:

Simplify the expressions within the parentheses using the power of operator ("^").

\((35)"4 = 15^4\\(23)"5 = 6^5\\(2\times5)"7 = 10^7\)

Apply the power rule of exponents, which states that \((a^b)^c = a^{(b\times c).\)

\(15^4 \times 6^5 \times 10^7 = (15610)^{(4+5+7)\)

Simplify the expression within the parentheses.

\((15610)^{16 }= 900^{16\)

Express both sides of the equation in terms of prime factors.

\(900 = 2^2 \times 3^2 \times 5^2\)

quate the powers of the prime factors on both sides of the equation.

\(2^2 \times 3^2 \times 5^2 = 2"x \times 3"y \times 5"z\)

From this, we can conclude that x = 2, y = 2, and z = 2.

Therefore, the solution for x, y, and z is x = 2, y = 2, and z = 2.

for such more question on expressions

https://brainly.com/question/12270624

#SPJ11

The solutions to the equation \(x^2 = 100\) are \(x = 10\) and \(x = -10\).

A formula that explains the relationship between the two expressions on either side of a sign. According to algebra, an equation is a statement that shows the equality of two mathematical expressions. For instance, the equation 3x + 5 = 14 is made up of the two equations 3x + 5 and 14, which are separated by the equal sign. Your example is indeed an equation because an equation is any expression with just an equals sign. Equations are frequently employed in mathematical statements because mathematicians like equal signs. A formula is a list of rules for achieving a particular result.

To solve the equation \(x^2 = 100\), we can follow these steps:

Each side of the equation's square root is as follows:

x = ±10

Therefore, the solutions to the equation \(x^2 = 100\) are \(x = 10\) and \(x = -10\).

Learn more about equation here

https://brainly.com/question/25678139

#SPJ1

Answer:

Step-by-step explanation:

The graph of f(x) = –x^2 + 5 is that of an upside-down parabola with vertex (0, 5) and x-intercepts (-√5, 0) and (+√5, 0).  Plot the vertex (0, 5) and then draw a smooth curve through it and through the x-intercepts.

The function f(x) = -x2+5 is thus represented by the quadratic functions in the first graph.

A quadratic function has the formula f(x) = ax2 + bx + c, with a, b, and c being integers and a not equal to zero.  Parabolas can have openings that are upward or downward, different "widths" or "steepnesses," but they all share the same fundamental "U" shape.

here calculation

The function provided is f(x) =  -x2+5

.... (1) (1)

We must locate the function's graph.

The quadratic function's vertex form is f(x)= a(x-h)2 + k.... (2)

When we compare (1) and (2), we obtain

h=0 , k=5

It denotes that the function's vertex is (0,5).

The values list is

x           y

-2            1

-1            4

0            5

1            4

2           1

Place all ordered pairings on a coordinate plane, and then use a free-hand curve to link them.

The function f(x) = -x2+5 is thus represented by the quadratic functions in the first graph.

To know more about quadratic functions visit:-

brainly.com/question/18958913

#SPJ7

The time after which the ball strike the ground is \(t = \frac{49(5+\sqrt{5}) }{100}\) or;\(t = \frac{49(5-\sqrt{5}) }{100}\) seconds.

The speed of the ball when launched vertically upward is 19.6 m/s².

The acceleration of the ball, g = - 9.8 m/s²

The final velocity of the ball will be 0 m/s since the ball will reach the maximum height and the ball stops.

u = 0 m/s

Using the equation of motion,

v² = u² + 2as

v² = u² + 2(-g)s

v² = u²- 2gh

( 19.6 )² = 0 - 2(10)h

384.16 = -20h

h = - 19.208 m

Therefore, the total height reached by the ball is 102.9 + 19.208 = 122.108 m

Now, the function for the height of the ball is:

f(t) = - 4t² + 19.6t + 102.9

122.108 = - 4t² + 19.6t + 102.9

- 4t² + 19.6t + 102.9 - 122.108 = 0

- 4t² + 19.6t - 19.208 = 0

4t² - 19.6t + 19.208 = 0

Multiplying by 1000 on each side of the equation.

4000t² - 19600t + 19208 = 0

Solving the quadratic equation,\(t =[\frac{ - ( - 19600 ) \pm \sqrt{(-19600)^{2}-4(4000)(19208)} }{2(4000)} ]\)

Therefore,

\(t = \frac{49(5+\sqrt{5}) }{100}\) or;

\(t = \frac{49(5-\sqrt{5}) }{100}\)

Learn more about function here:

https://brainly.com/question/18102431

#SPJ9

Answer:

the second option is the right one pretty sure

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

Explanation:

Before we can find the standard deviation, we need to find the sample mean which is xbar.

Xbar is found by adding up the values and dividing by n = 8 since there are 8 values in this data set

xbar = (sum of values)/n

xbar = (45+30+35+20+21+46+16+37)/8

xbar = 31.25

Refer to the spreadsheet table below in the attached image. The first column is the column of x values, which is the data set given to us. The next column over is the expression x-xbar, which will have us subtract xbar from each data value.

Example: x-xbar = 30-31.25 = -1.25 in row 2

From there, we square everything in that second column to form the third column. Adding everything in that third column results in the yellow highlighted value 919.5

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

The next step is to divide that over n = 8 to get 919.5/n = 919.5/8 = 114.9375

This is the population variance. Apply the square root to get the population standard deviation

sqrt(variance) = sqrt(114.9375) = 10.7208908

which is approximate. This rounds to 10.721

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

Note: if you wanted the sample standard deviation, then you'd divide by n-1 = 8-1 = 7. However, the other steps mentioned are identical.

Answer:

x = 8

Step-by-step explanation:

6x + 47 and 95 are vertically opposite angles and are congruent , that is

6x + 47 = 95 ( subtract 47 from both sides )

6x = 48 ( divide both sides by 6 )

x = 8

Your answer would be: x = 8

Steps:

6x + 47 and 95 are vertically opposite angles and are congruent , that is

6x + 47 = 95 ( subtract 47 from both sides )

6x = 48 ( divide both sides by 6 )

x = 8

Turn me into a superhero

Answer:

x/10 = -9

Step-by-step explanation:

You are given the equation: x = -90

You are asked to divide 10 from both sides. Simplify:

(x)/10 = (-90)/10

x/10 = -90/10

x/10 = -9

x/10 = -9 is your answer.

~

According to the concept of algebraic expression and arithmetic, the correct answers are A) Number of adults = N - 25. B) Number of adults when N = 124: 124 - 25 = 99

A) Let's denote the number of children as N. Since there are 25 fewer adults than children, the number of adults can be expressed as N - 25.

B) If there are 124 children, we substitute N with 124 in the expression from part A. Thus, the number of adults would be 124 - 25 = 99.

To arrive at these answers, we used the given information that there are "N" children and 25 fewer adults than children. By substituting the value of N, we determined the number of adults in terms of N and then calculated the specific number of adults when N is equal to 124.

Note: The given question is incomplete. The complete question is:

Some adults and children are watching a musical. there are 'N' number of children. There are 25 fewer adults than children.

A) find the number of adults in terms of 'N'.

B) if there are 124 children how many adults are there?​

For more questions on algebraic expression:

https://brainly.com/question/29333936

#SPJ8

Answer:

isoceles and right

Step-by-step explanation:

Answer:

I think the answer us B........

Answer:

$10.08

Step-by-step explanation:

100%=$14

72%= x (cross multiple)

100% × x =72% × $14

100x =1008

divide both sides by 100

100x÷100=1008÷100

x=$10.08

The solutions to the given quadratic equation are x=11 and x=-3.

The given quadratic equation is x²-8x-33=0.

The solutions to the quadratic equation are the values of the unknown variable x, which satisfy the equation. These solutions are called roots or zeros of quadratic equations. The roots of any polynomial are the solutions for the given equation.

By using splitting middle term method, we get

x²-11x+3x-33=0

x(x-11)+3(x-11)=0

(x-11)(x+3)=0

(x-11)=0 and (x+3)=0

x=11 and x=-3

Therefore, the solutions to the given quadratic equation are x=11 and x=-3.

To learn more about the solution of quadratic equation visit:

https://brainly.com/question/18305483.

#SPJ6

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

\(\blue\textsf{\textbf{\underline{\underline{Question:-}}}}\)

Given that x varies inversely with y, x=6 when y=-4, find y when x=8.

\(\blue\textsf{\textbf{\underline{\underline{Answer and How to Solve:-}}}}\)

If x varies inversely with y, we divide.

So the formula looks as follows:-

\(\bold{x=\displaystyle\frac{k}{y} }\)

where k = constant of proportionality

Plug in the values:-

\(\bold{6=\displaystyle\frac{k}{-4}}\)

Multiply both sides by -4:-

\(\bold{-24=k}\)

Now find y when x=8:-

\(\bold{8=\displaystyle\frac{-24}{y}}\)

Multiply both sides by y:-

\(\bold{8y=-24}\)

Divide by 8 on both sides:-

\(\dashrightarrow\bigstar{\boxed{\boxed{\underline{\bold{y=-3}}}}\dashleftarrow\)

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

If the random variable x is normally distributed with a mean equal to 0.45 and a standard deviation equal to 0.40, then P(x ≥ .75) is 0.9227.

A z-score describes the position of a raw score in terms of its distance from the mean when measured in standard deviation units. The z-score is positive if the value lies above the mean and negative if it lies below the mean.

Given the problem above, we need to find what the z-score is when P(x ≥ .75).

The formula for calculating a z-score is given by:

\(Z=\dfrac{\text{x}-\mu}{\sigma}\)

Where:

Now,

\(Z=\dfrac{\text{x}-\mu}{\sigma}\)

\(Z=P(\text{x} \geq 0.75) = \huge \text(\dfrac{P(Z \geq (0.75 - 0.45)}{0.40}\huge \text)\)

\(Z= P\huge \text (\dfrac{Z \geq0.30}{0.40}\huge \text)\)

\(Z=P(Z \geq 0.75) = 1 - P(Z < 0.75)\)

\(Z=1 - 0.077337\)

\(Z\thickapprox 0.9227\)

Therefore, the z-score of P(x ≥ .75) is 0.9227.

Learn more about the z-score at:

https://brainly.com/question/31871890

Answer:

A. 1/2 cups

Step-by-step explanation:

13/15 is close to 1

1/5 is a small amount

9/20 is just over 1/2

5/11 is just under 1/2

7/15 is just under 1/2

Estimate: 1 + 1/2 + 1/2 + 1/2 + a little = 2 1/2

He needs 3 cups, so he needs another 1/2 cup.

Answer: A. 1/2 cups

Answer:

it a 1/2

Step-by-step explanation:

Hello, I was happy to solve the problem. If you find a bug, post in the comments or click on the report, I will see it and try to fix it as soon as possible.

The answer to this problem: 2

Answer:

Step-by-step explanation:

15

the polynomial with x equal to 3. - 9x+5  The solution, which is an integer, is -22.

An integer is a whole number that is not a fraction and can be positive, negative, or zero. Integers include -5, 1, 5, 8, 97, and 3,043 as examples. Some instances of numbers that are not INTEGERS.

A fraction is a numerical value that is a part of an entire. A whole is evaluated by breaking it down into various components.. For instance, 12 represents a half of a full number or item.

in accordance with the stated fact;

-9x+5

put x=3 in given equation;

-9(3)+5

=-27+5

=-22

to know more about INTEGER visit;

https://brainly.com/question/621669

#SPJ9

Answer:

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

Let the radius be r.

Use circumference formula and find the value of r:

Find the area using the circle area formula:

The matching choice is (B).

Answer:

Step-by-step explanation: