pls help!!!! i have eight more minutes to answer
eeeeeeeeee

Pls Help!!!! I Have Eight More Minutes To Answereeeeeeeeee

Answers

Answer 1
Answer: B) 16 units

Step-by-Step Explanation:

As we can observe from the graph,

Length (l) = 5 units
Breadth (b) = 3 units

Perimeter = 2(l + b)

Therefore,
= 2(l + b)
= 2(5 + 3)
= 2(8)
= 2 * 8
=> 16

Perimeter = 16 units

Related Questions

The graph of the function f (x) = StartFraction 3 Over x + 5 EndFraction is shown below.

On a coordinate plane, a hyperbola is shown. Both curves approach x = negative 5.

What is the vertical asymptote of the function?

Answers

Using it's concept, it is found that the vertical asymptote of the function [tex]f(x) = \frac{3}{x+5}[/tex] is of x = -5.

What are the vertical asymptotes of a function f(x)?

The vertical asymptotes are the values of x which are outside the domain, which in a fraction are the zeroes of the denominator.

In this problem, the function is fraction given by:

[tex]f(x) = \frac{3}{x + 5}[/tex]

At the denominator, we have that:

x + 5 = 0 -> x = -5

Hence the vertical asymptote of the function [tex]f(x) = \frac{3}{x+5}[/tex] is of x = -5.

More can be learned about asymptotes at https://brainly.com/question/16948935

#SPJ1

Answer: A) x= -5

Took the test and got 100% :)

7x+8y=-18
-5+y=-14
system by substitution ^​

Answers

Answer:

y=5+14=19

Step-by-step explanation:

Y=5+14=19 this is the right answers

A craftsperson must attach a lead strip around all four sides of a stained glass window that is
6 4/5 in. by
15 14/25 in. before it is installed. find the length of lead stripping needed.

Answers

Answer: 37.9 inch the length of lead stripping .

Step-by-step explanation:

Given ,

Sides of windows are [tex]6\frac{4}{5}[/tex]  and [tex]15\frac{14}{25}[/tex]

[tex]= (6\frac{4}{5} + 15 \frac{14}{25} ) * 2\\ \\=\frac{34}{5} + \frac{389}{25} * 2\\\\ \frac{170}{25} + \frac{389}{25}* 2 \\\\= \frac{559}{25} * 2\\\\= \frac{948}{25} \\\\= 37.9 inch[/tex]

So , the answer is 37.9 inch

#SPJ1

If 0.15% of budget is spent on office supplies, what decimal should you multiply budget

Answers

Answer:

0.015

Step-by-step explanation:

0.15% = 0.0015

{transfer}

GRADE 11 MATH

PLEASE HELP!

Nelson received $10,000 on his 17th birthday. This is the accumulated amount of an

investment his parents made on the day he was born. The investment earned 9.5%/a,

compounded semi-annually.

a) Determine the amount that Danny’s parents invested 17 years ago. [3 marks]

b) How much interest did the investment earn? [1 mark]

Answers

The amount that was invested 17 years ago is $2064.25.

The interest earned is  $7935.75.

What is the amount invested 17 years ago?

The formula that would used to determine the amount that was invested 17 years ago is:

P = FV / (1 + r)^nm

Where:

FV = Future value = 10,000P = Present value R = interest rate = 9.5 / 2 = 4.75%m = number of compounding = 2 N = number of years = 17

10,000 / (1.0475)^(17 x 2) = $2064.25

Interest earned = 10,000 - 2064.25 = $7935.75

To learn more about future value, please check: https://brainly.com/question/18760477

#SPJ1

Find a fraction equivalent to 5/7 whose squared terms add up to 1184.

Answers

The system of equations of two unknowns is formulated and solved.

[tex]\large\displaystyle\text{$\begin{gathered}\sf \bf{ \left\{\begin{matrix} \ \ \ \dfrac{x}{y} = \dfrac{5}{7} \\ x^2+y^2 = 1184 \end{matrix}\right. \ \Longrightarrow \ x=\dfrac{5}{7}y } \end{gathered}$}[/tex]

[tex]\large\displaystyle\text{$\begin{gathered}\sf \bf{ \left (\dfrac{5}{7}y \right )^2+y^2=1184\ \Longrightarrow\ 25y^2+49y^2=58016 } \end{gathered}$}[/tex]

                                                              [tex]\large\displaystyle\text{$\begin{gathered}\sf \bf{74y^{2}=58016} \end{gathered}$}\\\large\displaystyle\text{$\begin{gathered}\sf \bf{ \ \ \ \ \ \ y^{2}=784 } \end{gathered}$}\\\large\displaystyle\text{$\begin{gathered}\sf \bf{ \ \ \ \ \ y=\pm\sqrt{784}=\pm28 } \end{gathered}$}[/tex]

                                                                  [tex]\large\displaystyle\text{$\begin{gathered}\sf \bf{ x=\dfrac{5}{7}(\pm 28)=\pm 20 } \end{gathered}$}[/tex]

The fraction that satisfies the request is [tex]\bf{\dfrac{20}{28}}[/tex] , since in [tex]\bf{\dfrac{-20}{-28}}[/tex] the negative signs are canceled and the first fraction is obtained.

Given that p(x) = 2(x - 12)2 + 5, what is the value p(3)

Answers

Answer:

p(3) = 25

Step-by-step explanation:

p(3) = 2(3 - 12)2+5

p(3) = 6 - 24 + 2 + 5

p(3) = 25

The equation in Question 4 shows a relationship between the length of arc EF in circle AB and the radius of circle AB. So, for a given central angle, what does the length of the arc it intersects depend on?

Answers

For a given central angle,  the length of the arc it intersects depends on the radius of the circle and the central angle.

What is the Length of an Arc?

Any smooth curve connecting two points is called an arc. The arc length is the measurement of how long an arc is. The length of an arc is given by the formula,

Length of an Arc = 2π×R×(θ°/360°)

where

θ is the angle, that which arc creates at the center of the circle in degree.

The measurement of the length of an arc formed by a central angle that intersects the circle at two points is given as,

[tex]\rm {Length\ of\ the\ arc} = 2\pi \times \text{Radius of the circle}\times \dfrac{\text{(Measurement of central angle)}}{360^o}[/tex]

Now, the length of the arc EF will be,

Arc EF = 2π × (AB) × (θ/360°)

Where θ is the measurement of the central angle.

Hence, For a given central angle,  the length of the arc it intersects depends on the radius of the circle and the central angle.

Learn more about the Length of an Arc:

https://brainly.com/question/1577784

#SPJ1

Answer: Plato/edmentum sample answer  

Step-by-step explanation:

For a given central angle, the length of the arc it intersects depends only on the radius of the associated circle.


A car used of a gallon of gas to drive of a mile. At this rate, how many miles
can the car travel using 1 gallon of gas?

Answers

Answer: 4/64
• 29
^ 3.5
Step-by-step explanation:
Since 1/4 * 4 = 1
We just have to multiply 1/64 times 4 to get the
answer
1/64 * 4 = 4/64

so i have 56 8 year old kids in my basement and i auction off 25 of them how many kids do i have left?

Answers

Answer:

none because i boiled them all

Step-by-step explanation:

Answer:

31 kids

Step-by-step explanation:

56-25=31

geometry please help!

Answers

Answer:

x = 3

Step-by-step explanation:

Angle S and Angle T are consecutive interior angles. Therefore, we know that T + S = 180°.

First, we need to solve for T, and since angles S and T are consecutive interior angles, we know that T + S = 180°. If we reorganize the equation to include the things we know (S = 105°), then we get 180° - 105° = 75°. So T is 75°.

Now, we use T = 75° and the information given to us in the picture to set up an equation. 75 = 24x + 3. Now, we can find x by isolating it. Do this by:

1) Subtracting 3 from both sides to give you 72 = 24x. We do this to get rid of the 3 from the "x side", but we must also do it to the other to keep the equation true. This moves the 3 from the "x side" to the other since we're trying to isolate x.

2) Divide 24 by both sides to get 3 = x. We use the same logic as we did for 3, except this time we divide since that's the opposite of multiplying.

In conclusion, x = 3.

the average wieght of three children a b and c is 60 lbs if another child D is included in the grouo in the place of C the average weight of the group becomes 54 lb what is

Answers

The weight of the last child is 36 lbs.

How to calculate the mean?

The average weight of the three children is 60 lbs. The total weight will be:

= 60 × 3

= 180 lbs.

When another child is added, the weight is 54lb. The total weight will be:

= 54 × 4

= 216 lbs

The weight of the last child will be:

= 216 - 180

= 36 lbs.

Learn more about mean on:

brainly.com/question/1136789

#SPJ1

The probability that Janet will win the marathon is 44%. What is the probability that Janet will not win the marathon? Write the probability as a percent and include the percent symbol.

Answers

Answer:

56%

Step-by-step explanation:

If the percentage that she wont win is 44% she still has a 64 percent chance of winning

If ten rolls of tape cost $30, how much will 12 rolls cost?​

Answers

Answer:

Step-by-step explanation:

10 rolls = $30

12 rolls = ...

Because $3 for each roll of tape, so 3 x 10 = 30. All we have to do is multiply 3 by 12 to get how much for 12 rolls.

36.

PLEASE HELP!!! 50 POINTS!!!

Answers

Answer:

Part A:

In order to find a coterminal angle, or angles of the given angle, simply add or subtract 360 degrees of the terminal angle as many times as possible.

Part B:Simply put, coterminal angles start at 0° and end at the same place, though in different directions and multiple times around (you're probably going to want to make that sound a little more formal). Since each time around is 360°, boom

Part C: 75° is in Quadrant II, right? If I go one more time around, 75 + 360 = 435°. I can also go "backward. Starting at 0 and going clockwise, I'm going 75 fewer degrees than all the way around, so 360-75 = 285° but since I'm going "backward" 75 - 360 = -285°. One more is on you.

Step-by-step explanation:

#24. you and your friends go to the county fair the cost to get in is $8 and the tickets per game to my cost $0.25 each. Write an equation to create a table of reasonable values and identify the domain and range for the scenario.​

Answers

The equation of the scenario is y = 8 + 0.25x and the domain is x ≥ 0 and the range is y ≥ 8

How to determine the equation?

The given parameters are:

Entrance fee = $8Rate = $0.25 per person

Let the total cost be y, and the number of people be x.

The equation would be:

y = Entrance + Rate * x

This gives

y = 8 + 0.25x

Hence, the equation of the scenario is y = 8 + 0.25x

The table of values

Set x = 0 to 5, and calculate the function values

y = 8 + 0.25 * 0 = 8

y = 8 + 0.25 * 1 = 8.25

y = 8 + 0.25 * 2 = 8.50

y = 8 + 0.25 * 3 = 8.75

y = 8 + 0.25 * 4 = 9.00

y = 8 + 0.25 * 5 = 9.25

So, the table of values is:

x    y

0    8

1      8.25

2     8.50

3     8.75

4     9.00

5    9.25

The domain and the range

The domain is the set of people that can get in (i.e. at least 0), while the range is the total amount (i.e. at least the entrance fee)

Hence, the domain is x ≥ 0 and the range is y ≥ 8

Read more about linear functions at:

https://brainly.com/question/14323743

#SPJ1

Martin wants to use coordinate geometry to prove that the opposite sides of
a rectangle are congruent. He places parallelogram ABCD in the coordinate
plane so that A is (0, 0), B is (a,0), C is (a, b), and D is (0, b).
What formula can he use to determine the distance from point D to point A?
A. 0-0)2+(b-0)² = √√b² = b
B. (a-a)2+(b-0)² = 6²
C. (0-0)² + (b-0)² = 6²
OD. √(-a)2+(b-0)²-√√b² = b

Answers

The correct answer is option A which is the distance between A and D will be  AD = [tex]\sqrt{(0-0)^2-(b-0)^2}=\sqrt{b^2}=b[/tex].

What is coordinate geometry?

A coordinate plane is a 2D plane which is formed by the intersection of two perpendicular lines known as the x-axis and y-axis.

The formula utilised to find the distance between two points is;-

X = [tex]\sqrt{(x_2-x_1)^2+(y_2-y_1)^2[/tex]

We have the coordinates of the point A = (0, 0) and D is  (0, b).By applying the formula to find the distance between A and D.

AD = [tex]\sqrt{(0-0)^2-(b-0)^2}=\sqrt{b^2}=b[/tex].

Therefore the correct answer is option A which is the distance between A and D will be  AD = [tex]\sqrt{(0-0)^2-(b-0)^2}=\sqrt{b^2}=b[/tex].

To know more about Coordinate geometry follow

brainly.com/question/18269861

#SPJ1

A biologist hypothesizes that the mean life expectancy of a mosquito is 14 days. Researchers believe the true mean is less than 14 days and they plan a hypothesis test at the 5% significance level on a random sample of 60 of these mosquitos. If the alternative hypothesis is correct, for which of the following values of μ is the power of the test greatest?
μ = 9
μ = 7
μ = 10
μ = 14
μ = 18

Answers

Based on the alternative hypothesis, the value of μ that will have the greatest test power is μ = 7.

Which value of μ will have the greatest power of test?

The alternative hypothesis is that Hₐ : μ < 14.

For the alternative hypothesis to be right, μ will have to be less than 1.4.

μ will also give a greater test power the lower it is below 14. From the options therefore, μ with the greatest test power would be 7.

Find out more on alternative hypothesis at https://brainly.com/question/14016208.

#SPJ1

Answer:

μ = 7

Step-by-step explanation:

Got this right on the segment exam. Good luck, my FLVS fellows!

Later on in this module, you will learn how to model events by writing trigonometric functions. for now, do some research on events that are cyclical or periodic. write a discussion post about one of those events. be sure to describe the event and the period.

Answers

The events that are cyclical are:

The change of seasons each yearEarth Rotation.Moon Phases.Tides.

The  events that are  periodic are:

Pendulum  OscillationSimple harmonic motionstuning fork,, etc.

What are Cyclical events?

Cyclical events are known to be event that occurs in a specific order e.g. Changes in the economy.

The Events that take place only after a regular interval of time are known to be periodic event.

Therefore, the events that are cyclical are:

The change of seasons each yearEarth Rotation.Moon Phases.Tides.

The  events that are  periodic are:

Pendulum  OscillationSimple harmonic motionstuning fork,, etc.

Learn more about Cyclical events from

https://brainly.com/question/17720206

#SPJ1

If ab = 10 ft, ac = 14 ft, and bc = 20 ft, what is rs? 10 ft 14 ft 20 ft 24 ft

Answers

The side |rs| is congruent to side |ac| which is 14 ft.

What are congruent triangles?

Congruent triangles are two similar triangles that have corresponding sides and angles and they are of equal measure.

The figures from the textbook illustrate that following rotation, the two triangles are congruent.

This signifies that the angles and sides of the first triangle are equal to the angles and sides of the other triangle.

Therefore:

ab = tr = 10 ftac = rs = 14 ftbd = ts = 20 ft

Learn more about congruent triangles here:

https://brainly.com/question/1675117

#SPJ1

Can I get help with this pls

Answers

Answer:

2 [tex]\leq[/tex] x [tex]\leq[/tex] 7

Step-by-step explanation:

See attachment.

Sofia's audio player has 15,000 songs. the play time for the songs is skewed to the right, with a mean of 255 seconds and a standard deviation of 30 seconds. part a: can you accurately calculate the probability that the mean play time is more than 260 seconds for an srs of 15 songs? explain. (4 points) part b: if you take a random sample of 40 songs instead of 15, explain how the central limit theorem allows you to find the probability that the mean play time is more than 260 seconds. calculate this probability and show your work. (6 points)

Answers

Using the normal distribution and the central limit theorem, it is found that:

a) Since the distribution is skewed and the sample size is less than 30, the probability cannot be calculated.

b) There is a 0.1469 = 14.69% probability that the mean play time is more than 260 seconds.

Normal Probability Distribution

The z-score of a measure X of a normally distributed variable with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex] is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The z-score measures how many standard deviations the measure is above or below the mean. Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.By the Central Limit Theorem, the sampling distribution of sample means of size n has standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex], as long as the underlying distribution is normal and the sample size is at least 30.

The mean and the standard deviation are given by, respectively:

[tex]\mu = 255, \sigma = 30[/tex]

In item a, according to the Central Limit Theorem, since the distribution is skewed and the sample size is less than 30, the probability cannot be calculated.

For item b, we have that n = 40 > 15, hence the standard error is given by:

[tex]s = \frac{30}{\sqrt{40}} = 4.74[/tex]

The probability is one subtracted by the p-value of Z when X = 260, hence:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

By the Central Limit Theorem

[tex]Z = \frac{X - \mu}{s}[/tex]

[tex]Z = \frac{260 - 255}{4.74}[/tex]

Z = 1.05

Z = 1.05 has a p-value of 0.8531.

1 - 0.8531 = 0.1469.

There is a 0.1469 = 14.69% probability that the mean play time is more than 260 seconds.

More can be learned about the normal distribution and the central limit theorem at https://brainly.com/question/24663213

#SPJ1

The NUK Energy Company is designing a new logo, as shown in the accompanying
diagram, with mNK-130 and mNK-m.NU.
N
K
What is the measure of ZKNU?
1) 80°
2) 65°
3) 50°
4) 100°
U

Answers

The measure of the angle KNU (∠KNU) of the cyclic quadrilateral is; Option 3: 50°

How to find the angle in a quadrilateral?

From the attached cyclic quadrilateral of NUK Energy Company's new logo, we can say that equal angles intercept equal arcs and as such, the measure of angle KNU will be;

∠KNU 1/2 * 100 = 50°

This is because If two inscribed angles of a circle intercept the same arc or arcs of equal measure, then the inscribed angles have equal measure.

Read more about quadrilateral angles at; https://brainly.com/question/27420229

#SPJ1

plss help, ill give brainiest

Answers

Answer:

A

Step-by-step explanation:

Cylinder volume= V = π r ^2 h

So you times Pie by the radius (diametre divided by two- 3.5) you then square this. After that, times it by the height (10)

So the volume is 384.85.

You then find 30% of this, so times 384.85 by 30%.

You then get an answer of 115.455, and this is equal to A.

I hope this helps, have a lovely day.

what is pi times squared

Answers

Answe

Step-by-step explanation:

cuanto es 3,072 en fraccion ?

What critical value of t* should be used for a 95% confidence interval for the population mean based upon a random sample of 20 observations

Answers

Using a calculator, the critical value of the t-distribution that should be used for a 95% confidence interval with 20 observations is of t* = 2.0930.

How to find the critical value of the t-distribution?

A calculator is used, with two inputs:

The confidence level.The number of degrees of freedom, which is one less than the sample size.

In this problem, we have a 95% confidence interval, with 20 - 1 = 19 df, hence the critical value is of t* = 2.0930.

More can be learned about the t-distribution at https://brainly.com/question/16162795

#SPJ1

Two lines, A and B, are represented by the equations given below: Line A: y = x − 6 Line B: y = 3x + 4 Which of the following shows the solution to the system of equations and explains why? (1 point) a (−5, −11), because the point satisfies both equations b (−5, −11), because the point does not lie on any axis c (−3, −5), because the point satisfies one of the equations d (−3, −5), because the point lies between the two axes

Answers

The solution to the system of linear equations is: (−5, −11).

What is the Solution to the System of Linear Equations?

The solution to a system is the x and y -coordinates that satisfies the two linear equations.

Given the linear equations:

Line A: y = x − 6

Line B: y = 3x + 4

Now, equating these two equations

x - 6 = 3x + 4

2x = -10

x = -5

y = -11

Hence, the solution is: (−5, −11), because the point satisfies both equations.

Learn more about solution to a system here:

brainly.com/question/13729904

#SPJ1

As the sample size increases, the margin of error _____.

Answers

The margin of error is inversely proportional to the sample size. As the sample size increases, the margin of error decreases.

What is the margin of error?

The probability or the chances of error while choosing or calculating a sample in a survey is called the margin of error.

The margin of error is given as

[tex]\rm ME = z\times \sqrt{\dfrac{p(1-p)}{n}}[/tex]

We know that margin of error is inversely proportional to the sample size.

As the sample size increases, the margin of error decreases.

More about the margin of error link is given below.

https://brainly.com/question/6979326

#SPJ1

The sum of the lengths of any two sides of a triangle is greater than the length of the third side. What can you conclude about AC in ABC?
BC + AC = 22; AB + BC = 12

Answers

Answer:

ab<6 units

Step-by-step explanation:

One of the basic property of any triangle is that the sum of the length of any two sides of a triangle is always greater than the length of the third side. Here we are given a triangle abc, in whicn bc=4ac= 8-abIf have to make some conclusion about ab.As per the property discussed above ab<ac+bcab<8-ab+42ab<12ab<6Hence the length of ab must be less than 6 units

When written in factored form, 4w² -11w-3 is equivalent to

Answers

When written in factored form, 4w² -11w-3 is equivalent to (4w+1)(w−3).

What is the factored form of an expression?

When an expression is written as a result of the multiplication of some terms, then that multiplication form is called the factored form of that expression.

Example:   6 = 3 x 2 is a factored way of writing 6.

Given expression as

4w² -11w-3

4w²- 12 w− 1w − 3

(4w+1)(w−3)

Thus, the factored form of 4w² -11w-3 is (4w+1)(w−3).

Learn more about factored form of an expression here:

https://brainly.com/question/1249625

#SPJ1

Other Questions
please help me with this Which detail from the text best supports the answer to the previous questions labeled "part a"? question 2 options: "harbor and city" (line 4) "sits looking" (line 3) "moves on" (line 6) "silent haunches" (line 5) Brett draws the shape shown below.He says the shape can be classified as a quadrilateral, parallelogram, rhombus, and square.Is Brett correct? Explain. Stage of photosynthesis 1.)which of the following is the formula to find the volume of rectangular prism? A. V =lwh B. V = lw C. 1/3(Bh) D. 1/2(Bh)2.)the volume of a cone is _____ the volume of a cylinder with the same base area (B) and height (h). A. 1/2 B. 1/3 C. 1/4 D. 1/5 find the measure of the missing angle Not long after Henriettas death, planning began for a HeLa factorya massive operation that would grow to produce trillions of HeLa cells each week. It was built for one reason: to help stop polio.By the end of 1951 the world was in the midst of the biggest polio epidemic in history. Schools closed, parents panicked, and the public grew desperate for a vaccine. In February 1952, Jonas Salk at the University of Pittsburgh announced that hed developed the worlds first polio vaccine, but he couldnt begin offering it to children until hed tested it on a large scale to prove it was safe and effective. And doing that would require culturing cells on an enormous, industrial scale, which no one had done before. The National Foundation for Infantile Paralysis (NFIP)a charity created by President Franklin Delano Roosevelt, whod himself been paralyzed by poliobegan organizing the largest what is the central idea of this paragraph? 8. Simplify (+2) (+6) (-3) What are the solutions to this system ofequations?x + 2x - 8 = 0y = x + 3x + 5y = x + 13x = 2 and x = -4A(15, 2); (9,-4)B(2, 15); (-4, 9) Given: x - 5> -2.Choose the solution set.OxIXER, x> -7}OxIXER, x> -3}OxIxER, x> 3} 3Select the correct texts in the passage.Marlo is an account executive at an advertising agency. Select the two sentences that best demonstrate Marlo's self-management skills.Mario takes directions from his supervisor and works in harmony with everyone. He closely tracks his time and tasks and rarely missesdeadlines. He's willing to go the extra mile and work longer hours to make sure work gets completed. On a regular basis, he's able to completehis assignments without the need of close supervision. He also helps his coworkers when they need his support.ResetNext Graph: y+2=-3/4(x+4) The image shows a model of a nuclear reaction. Which objects could hit other atoms, producing a chain reaction? Which of these is an example of an idiom? A. It was fun to watch my baby sister play in the field of grass. B. I wasn't sure why he was angry. His mood came out of left field. C. My brother and I got in a huge fight. My best friend had to stop us.D. The cat seemed angry. She hissed every time l came near. Heat that flows by conduction is the transfer of thermal energy between substances in contact. What must occur for thisto happen?O The two systems must be the same temperature.O The two systems must not be touching each another.OOne system must have higher kinetic energy than the other system.The thermal energy of one system must be the same as the thermal energy of the other system. What is the pH of a 0.8 M LiOH solution?a)0.097b)13.9c)6.29d)9.84 Which historical monument was dedicated on memorial day in 1922?. Explain how the popular and electoral college votes decide the presidency? Without using a calculator, determine the number of real zeros of the functionf(x) = x3 + 4x2 + x 6.PLEASE HELP!!! I 10. how many grams of koh are there in 200 grams of 10% by mass koh solution?