please help me out on this ! Thank you!

The volume of added base at the equivalence point for HCl is 14.0 mL.

Given:

Volume of HCl solution = 28.0 mL = 0.0280 L

Concentration of HCl solution = 0.100 M

Molarity of KOH solution = 0.200 M

Calculation of Moles of HCl:

moles of HCl = Molarity × Volume (L)

moles of HCl = 0.100 M × 0.0280 L

moles of HCl = 0.00280 mol

Calculation of Moles of KOH:

moles of KOH = moles of HCl (at equivalence point)

moles of KOH = 0.00280 mol

Calculation of Volume of KOH:

Volume = moles / Molarity

Volume = 0.00280 mol / 0.200 M

Volume = 0.014 L or 14 mL

Learn more about Molarity from the given link:

https://brainly.com/question/30404105

#SPJ11

Answer:

Step-by-step explanation:

Step-by-step explanation:

Firstly, let's get the fractions out of mixed form.

2 1/5 = 11/5

(To do this, multiply 2 times 5 and add to the 1.)

1 5/6 = 11/6

(To do this, multiply 1 times 6 and add to the 5.)

Next, let's get the common denominator. When making a common denominator, keep in mind you must multiply/divide both the numerator and denominator

Answer:

Rotation 180° counterclockwise about the origin

Answer:

The second one, I think.

Step-by-step explanation:

5x-4=-3-x

5x+x=4+(-3)

6x=1

x=1/6

Answer:

Step-by-step explanation:

\( \sf{5x - 4 = - 3 - x}\)

Move constant to R.H.S and change it's sign

Similarly, Move variable to L.H.S and change it's sign

⇒\( \sf{5x + x = - 3 + 4}\)

Collect like terms

⇒\( \sf{6x = - 3 + 4}\)

Calculate

⇒\( \sf{6x = 1}\)

Divide both sides of the equation by 6

⇒\( \sf{ \frac{6x}{6} = \frac{1}{6} }\)

Calculate

⇒\( \sf{x = 0.16}\)

Hope I helped!

Best regards!!

Answer:

Step-by-step explanation:

You want to know angles x, y, and z in the given figure where parallel lines 'a' and 'b' are crossed by a transversal. The sum of these angles is 290°.

Angles y and z are called consecutive interior angles. As such, they are supplementary, so their sum is 180°.

  x + y + z = 290°

  x + 180° = 290°

  x = 110°

Angles x and y are vertical angles, so are congruent.

  y = x = 110°

Then z is found from ...

  y + z = 180°

  110° + z = 180°

  z = 70°

The measures of x, y, and z are 110°, 110°, and 70°, respectively.

<95141404393>

Answer:

A- The point-slope form of a line parallel to another line is given by y - y1 = m(x - x1), where m is the slope of the original line. The slope of the line x+2y=6 is -1/2. So, the equation of the line parallel to x+2y=6 through (8,3) is y - 3 = -1/2 (x - 8), which can be written in standard form as -2x + y = -11.

B- The point-slope form of a line perpendicular to another line is given by y - y1 = -1/m(x - x1), where m is the slope of the original line. The slope of the line x+2y=6 is -1/2. So, the equation of the line perpendicular to x+2y=6 through (8,3) is y - 3 = 1/2 (x - 8), which can be written in standard form as 2x + y = 15.

C- To graph the three lines, we can plot the x- and y-intercepts of each line and then draw a line through the points.

The x-intercepts are (-11/2,0), (0,-15), (0,-11) and the y-intercepts are (0,3), (0,7.5) and (0,5.5) respectively.

For a more detailed graph you can use a graphing software or calculator.

Answer:

To travel 20 Km, the hybrid car needs 0.3125 gallons of fuel.

Step-by-step explanation:

Proportions

The hybrid car can travel 40 miles per gallon.

Since one mile is equivalent to 1.6 Km, the distance traveled per gallon is 40*1.6 = 64 Km.

Now the distance is expressed in Km, we can find the gallons needed to travel 20 Km, by calculating 20/64 = 0.3125.

To travel 20 Km, the hybrid car needs 0.3125 gallons of fuel.

The value of x that makes triangles DEF ~ XYZ is -2. 25

It is important to note that perpendicular lines are equal to each other

From the triangles given, let us equate their perimeter one to another, we get;

8 + 10 + 3(x -1 ) = 7. 5 + 4 + x-1

expand the bracket

18 + 3x - 3 = 11. 5 + x - 1

collect like terms

3x - x = 10. 5 - 15

Add or subtract the collected like terms, we get;

2x = 4. 5

Now, make 'x' the subject from the equation

x = 4.5/2

Divide the values

x = -2. 25

Hence, the value is -2. 25

Learn about triangles on:

https://brainly.com/question/14285697

#SPJ1

The components of the vector with initial point (7,−6) and a terminal point at (6,−3) are:

The components of a vector are the vectors that makes up the resultant as described in the problem to have starting point (7,−6) and terminal point (6,−3).

This can be gotten by plotting these points and getting the coordinates of the points that makes the initial point and the terminal point the hypotenuse of the triangle

From the graph, the coordinates are:

component 1: (6, -6) to (3, -6)

component 2: (7, -6) to (6, -6)

Learn more about vectors at

https://brainly.com/question/25705666

#SPJ1

9514 1404 393

Answer:

  more than one triangle

Step-by-step explanation:

Any number of triangles can have those angle measures.

  more than one triangle

Answer:

the answer is more than one triangle

If you join Gym A, it will cost $20 to join for 1 month plus $3 per visit. If you visit the gym x times, your total cost will be 20 + 3x dollars.

If you join Gym B, it will cost a flat rate of $40 for 1 month.

To determine which membership is more cost-effective, you would need to compare the costs for different number of visits. For example, if you plan to visit Gym A 10 times in a month, your total cost would be 20 + 3(10) = $50. If you plan to visit Gym B only 2 times in a month, membership B is more cost-effective. If you plan to visit more than 13 times, membership A is more cost-effective.

It would be helpful to make a table with different number of visits to compare the cost of both gym memberships.

Answer:

A growth function has the following form.

where  = Original amount,

r = annual rate of change,

n = number of periods,

t = time in years

Since the time is in years, we need to convert t into days. We know that 1 year = 365 days. So t years = 365t days.  

So in this case, n = 365, r = 0.0095.

Then the function is rewritten as follows.

The daily growth rate would be  

Step-by-step explanation:

Lets find year wise population for example

\(\\ \sf{:}\longrightarrow P(3)=25,000(1.1023)3^2\)

\(\\ \sf{:}\longrightarrow P(3)=27557.5(9)\)

\(\\ \sf{:}\longrightarrow P(3)=248017.5\)

Answer:

1) L = 54", W = 6", H = 9"

2) Extra Space = 1389.96 in³

Step-by-step explanation:

1)

LENGTH:

Since, there will be 18 balls along the length of box. Therefore,

Length = L = (18 balls)(Diameter of 1 ball) = (18)(3'')

L = 54"

WIDTH:

Since, there will be 2 rows of cans, and hence, 2 balls along the width of box. Therefore,

Width = W = (2 balls)(Diameter of 1 ball) = (2)(3'')

W = 6"

HEIGHT:

Since, each can can hold 3 balls along the height of box. Therefore,

Height = H = (3 balls)(Diameter of 1 ball) = (3)(3'')

H = 9"

2)

First we calculate the total volume of box:

Total Volume = L*W*H = (54")(6")(9") = 2916 in³

Now, we calculate volume of one ball:

Volume of 1 Ball = (4/3)π(d/2)³ = (4/3)π(3"/2)³ = 14.13 in³

Now, we calculate the total number of balls in box:

No. of Balls = (Balls along length)(Balls along width)(Balls along height)

No. of Balls = (18)(2)(3) = 108 balls

Now, we calculate the total volume of box occupied by balls:

Total Volume occupied by Balls = (No. of balls)(Volume of 1 Ball)

Total Volume occupied by Balls = (108)(14.13 in³)

Total Volume occupied by Balls = 1526.04 in³

Hence, the extra space will be:

Extra Space = Total Volume of Box - Total Volume Occupied by Balls

Extra Space = 2916 in³ - 1526.04 in³

Extra Space = 1389.96 in³

Answer:

6.0p+1.65p=7.65

Step-by-step explanation:

The area of a rhombus can be found by multiplying the length of one of its sides by the height of a perpendicular line from the center to a side.

The height of the rhombus is the distance from the center of the rhombus to one of its sides, perpendicular to that side.

The formula for the area of a rhombus can be written as A = s*h, where A is the area, s is the length of one of the sides of the rhombus, and h is the height of the rhombus.

It's important to note that this method of finding the area of a rhombus without diagonals can only be used when the rhombus is a regular polygon, a polygon with all sides and angles congruent. When the rhombus is not a regular polygon, then you can find the area by using the diagonals.

Additionally, it's important to mention that a rhombus can be defined as a parallelogram with all sides congruent or a square with its angles not 90 degrees.

To know more about area of a rhombus on the link below:

https://brainly.com/question/12783973#

#SPJ11

The answer is B. No, because while the histogram is unimodal, it is not symmetric.

While the histogram is unimodal, it is not symmetric. It is skewed to the right, which means that the data is not evenly distributed. This can have an effect on the analysis of the data using a normal model. The normal model assumes that the data is symmetric and evenly distributed, which is not the case in this situation.

In addition, the sample size of 27 trees may not be large enough to support the use of a normal model. Generally, a sample size of at least 30 is recommended for using a normal model.

Therefore, the forester may not be justified in using a normal model to analyze these woods. A non-parametric approach, such as the Wilcoxon rank-sum test or the Kruskal-Wallis test, may be more appropriate for analyzing this data.

Learn more about histogram here brainly.com/question/30664111

#SPJ4

Answer: 5/40

Step-by-step explanation: If you do 1/8 times 5 it is 5/40

Answer:

c

Step-by-step explanation:

The total surface area of a 3-dimensional object is the sum of the areas of the faces or surfaces of a 3 dimensional object

for example, the total surface area of a cube is the sum of the area of all the six faces

the total surface area of a cube = 6a²

where a = edge

if a = 6

total surface area

6(6²) = 216

Sigma factors are necessary in the initiation phase of transcription. This phase requires a complex called RNA polymerase to locate the DNA's start site and begin the synthesis of a new RNA strand.

RNA polymerase recognizes promoters, which are DNA sequences adjacent to the transcription start sites that define the start site for RNA synthesis. Sigma factors are subunits of RNA polymerase that help it recognize promoters.Sigma factors regulate the initiation of RNA synthesis by RNA polymerase.

The sigma factor is a DNA-binding protein that recognizes specific promoter sequences and recruits RNA polymerase to the DNA molecule at the appropriate location. When the sigma factor binds to a promoter, RNA polymerase becomes anchored and initiates transcription. There are several sigma factors, each of which recognizes a different promoter sequence.

They are required for transcription of different sets of genes in response to environmental cues or other cellular stimuli.It is worth noting that the promoter sequence that sigma factors bind to can vary in terms of its similarity to the consensus sequence recognized by the sigma factor.

Sigma factors can also recognize alternative promoter sequences that bind to the RNA polymerase core enzyme with lower affinity than the consensus sequence. In general, a promoter with a perfect match to the consensus sequence is more effective than one with a non-perfect match in initiating transcription.

To learn more about Sigma factors, visit

brainly.com/question/30518693

#SPJ11

Answer:

neither

Step-by-step explanation:

got it right 2020

Answer:

E

Step-by-step explanation:

Answer:

20

Step-by-step explanation:

The distance formula is:

\(d = \sqrt {\left( {x_1 - x_2 } \right)^2 + \left( {y_1 - y_2 } \right)^2 }\)

where (x₁, y₁) and (x₂, y₂) are the points. We are given the points (-3,10) and (9,-6). Therefore,

\(x_{1}=-3 \\y_{1}= 10\\x_{2}=9 \\y_{2}=-6\)

Substitute the values into the formula.

\(d = \sqrt {\left( {-3 - 9} \right)^2 + \left( {10- -6} \right)^2 }\)

\(d = \sqrt {\left( {-3 - 9} \right)^2 + \left( {10+6} \right)^2 }\)

Solve inside the parentheses. Subtract 9 from 3. Add 10 and 6.

\(d = \sqrt {\left( {-12} \right)^2 + \left( {16} \right)^2 }\)

Evaluate the exponents.

⇒ -12²= -12*-12= 144

\(d = \sqrt {\left144 + \left( {16} \right)^2 }\)

⇒ 16²= 16*16=256

\(d = \sqrt {\left144 + \left256}\)

Add 144 and 256.

\(d=\sqrt{400}\)

Take the square root of 400.

\(d=20\)

The distance between the two points is 20.

The value of the expression is 1/(9x)^2

From the question, we have the following parameters that can be used in our computation:

(-9x)^-2

We can write the expression without negative exponents by using a fraction with a positive exponent:

(-9x)^-2 = 1/(-9x)^2

And without parentheses, this expression becomes:

1/(9x)^2

Read more about expression at

https://brainly.com/question/15775046

#SPJ1

Answer: The whole equation is simplified down to -20.

Step-by-step explanation:

Here's how I got my answer:

Equation is 4p^2 + 7q^3

All you need to do is plug in the values they have given you. If you apply them, you get:

4 (-3)^2 + 7 (-2)^3

Which simplifies to:

4 (9) + 7 ( -8)

Simplify furthermore:

36 + (-56)

Which gives you:

-20

The distance between Points A and B is 12 units. If we were to draw a number line with Point A at -5 and Point B at 7, we could count the number of units between them.

In order to determine the distance between points A and B on a number line, we need to know the values of each point and then calculate the absolute value of the difference between them.

Point A has a value of -5 and Point B has a value of 7. The absolute value of the difference between -5 and 7 is 12.

Therefore, the distance between Points A and B is 12 units. If we were to draw a number line with Point A at -5 and Point B at 7, we could count the number of units between them.

However, it is more efficient to simply subtract the values of the two points and take the absolute value of the result.

This gives us the distance between the two points, regardless of which one is greater or smaller. In this case, the distance between Points A and B on the number line is 12 units.

For more such questions on number line

https://brainly.com/question/28223520

#SPJ8

The set of ordered pairs {(-2,0), (3, 1), (3,2), (1,3)} that is a function. The correct answer would be an option (C).

A function is a set of ordered pairs such that for every unique input, there is only one unique output.

A set A {(9,0), (9, 1), (9,2), (9,3)} contains multiple outputs for the same input, so it's not a function.

B set B [(-1,0), (-2, 0), (2,0), (1,0)] contains multiple outputs for the same input, so it's not a function.

C set C {(-2,0), (3, 1), (3,2), (1,3)} contains only one output for every unique input, so it's a function.

D set D {(9,5), (9,5), (9,5), (9,5)} all the ordered pair has the same inputs and outputs, it's not a function.

Therefore, the set of ordered pairs that is a function is C set C {(-2,0), (3, 1), (3,2), (1,3)}.

Learn more about the function here:

brainly.com/question/12431044

#SPJ2

Using mathematical operations we can conclude that Jada drinks 8/15 liters of water.

So, liters of water Jada drinks:

We know that,

The container holds 4/5 liters of water.

Jada drinks 2/3 liters of water.

Now, liters of water Jada drinks is:

4/5 × 2/3

4×2/5×3

8/15

Therefore, using mathematical operations we can conclude that Jada drinks 8/15 liters of water.

Know  more about mathematical operations here:

https://brainly.com/question/28937023

#SPJ4

A correlation coefficient is consistently a number between 1 and - 1 .

The correlation coefficient is a factual measure that demonstrates the strength and heading of the straight connection between two factors. It goes from - 1 to 1, where - 1 addresses a completely bad correlation (i.e., as one variable expands, different declines), 0 addresses no correlation, and 1 addresses an entirely sure correlation (i.e., as one variable builds, the other likewise increments).

The indication of the correlation coefficient demonstrates the heading of the relationship, while the extent of the coefficient shows the strength of the relationship. A correlation coefficient of 0 shows no straight connection between the factors, while values nearer to - 1 or 1 demonstrate a more grounded direct relationship.

Find out more about correlation coefficient

brainly.com/question/9436626

#SPJ4

Answer:

Step-by-step explanation:

(x-2)(2x+3)(x+1)

=x(2x+3)-2(2x+3)(x+1)

=(2x^2+3x-4x-6)(x-1)

=(2x^2-x-6)(x-1)

=2x^2(x-1)-x(x-1)-6(x-1)

=2x^3-2x^2-x^2+x-6x+6

=2x^3-3x^2-5x+6

( x - 2 )( x + 1 )( 2x + 3 ) =

( x^2 - x - 2 )( 2x + 3 ) =

2x^3 - 2x^2 - 4x + 3x^2 - 3x - 6 =

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

2x^3 + x^2 - 7x - 6

c.) A ∩ C = {1, 2}

d.) B' (complement of B) = {2, 4, 6, 8}

e.) C ∪ B' = {1, 2, 4, 6, 8}

f.) (C ∪ B') ∩ A = {1, 2, 8}

g.) n(C ∪ B') (cardinality of C ∪ B') = 5

a.) Venn Diagram:

css

Copy code

     U

    _______

   |       |

A   |   B   |

   |_______|

    _______

   |       |

 C |       |

   |_______|

b.) Set D is added to the universe above so that D ⊂ B.

There are 15 possible subsets of set B:

D = {}, {1}, {3}, {5}, {7}, {1, 3}, {1, 5}, {1, 7}, {3, 5}, {3, 7}, {5, 7}, {1, 3, 5}, {1, 3, 7}, {1, 5, 7}, {3, 5, 7}

c.) A ∩ C = {1, 2}

d.) B' (complement of B) = {2, 4, 6, 8}

e.) C ∪ B' = {1, 2, 4, 6, 8}

f.) (C ∪ B') ∩ A = {1, 2, 8}

g.) n(C ∪ B') (cardinality of C ∪ B') = 5

h.) F × E = {(6, 1), (6, 8), (7, 1), (7, 8), (8, 1), (8, 8)}

Learn more about  complement from

https://brainly.com/question/98924

#SPJ11