Which sum or difference identity would you use to verify that cos (180° - q) = -cos q?


a.
sin (a -b) = sin a cos b – cos a sin b
b.
cos (a -b) = cos a cos b – sin a sin b
c.
cos (a -b) = cos a cosb + sin a sin b
d.
sin (a + b) = sin a cos b + cos a sin b

Answers

Answer 1
Answer: Choice C

cos(a - b) = cos(a)cos(b) + sin(a)sin(b)

In this case, we'd have a = 180 and b = q, so,

cos(a-b) = cos(a)cos(b) + sin(a)sin(b)

cos(180 - q) = cos(180)cos(q) + sin(180)sin(q)

cos(180 - q) = -1*cos(q) + 0*sin(q)

cos(180 - q) = -cos(q) + 0

cos(180 - q) = -cos(q)


Related Questions

Solve for x.
to
118°

Answers

Answer:

[tex] \boxed{ \bold{ \huge{\boxed{ \sf{62}}}}}[/tex]

Step-by-step explanation:

[tex] \sf{x ° + 118 ° = 180 ° }[/tex]

( Sum of angle in straight line )

Move 118 to right hand side and change it's sig

⇒[tex] \sf{x ° = 180 ° - 118 °}[/tex]

Calculate

⇒[tex] \sf{x = 62 °}[/tex]

Hope I helped!

Best regards!!

Ari received $100 as a birthday gift and has decided to save this money as well as add $20 of his own money each month. The total money Ari has saved can be estimated using the equation y = 20x + 100, where x is the number of months and y is the total amount of money saved. How much money will Ari have saved after 6 months?

Answers

Answer:

$220

Step-by-step explanation:

As per the equation:

y = 20x + 100

For x = 6 we get:

y = 20*6 + 100 = 220

So Ari will have saved $220 after 6 months

Answer:

14 pennies and 8 nickels

Expla-- Im smart

As x goes to positive infinity, y (the function) goes to...

Answers

Infinity depends on the graph you are looking at but should be positive

Which point lies on the line with point-slope equation y - 3 = 4(x + 7)?

A.
(7, 3)

B.
(7, -3)

C.
(-7, -3)

D.
(-7, 3)

Answers

Answer:

D.

(-7, 3)

Step-by-step explanation:

Given equation

y - 3 = 4(x + 7)

points are in form of (x,y) that is first value represent value of coordinate and

second value y represents value of y coordinates.

to find which point lies on given line equation we need to substitute value of x and see if value of y obtained is same as given in the option or not.

______________________________________

A.

(7, 3)

substituting x with 7 in the equation

y - 3 = 4(7 + 7)

=> y - 3 = 4(14)

=> y - 3 = 56

=> y = 56+3 = 59

Thus, we see value of y when x is 7 is 59

which is not equal to 3 as given in option A hence option A is not correct choice

B.

(7, -3)

As seen above for x = 7 , y is 59 hence option B is also incorrect

C.

(-7, -3)

substituting x with -7 in the equation

y - 3 = 4(-7 + 7)

=> y - 3 = 4(0)

=> y - 3 = 0

=> y = 0+3 = 3

Thus, we see value of y when x is -7 is 3

which is not equal to -3 as given in option C hence option C is not correct choice

D.

(-7, 3)

As calculated above value of y when x is -7 is 3

hence

option D is correct choice.

Find a fundamental matrix solution for the system x 0 1 7x1 + 4x2 + 12x3, x 0 2 x1 + 2x2 + x3, x 0 3 −3x1 − 2x2 − 5x3. Then find the solution that satisfies x®(0) h 0 1 −2 i .

Answers

Here is the correct format for the question.

[tex]x'_1 = 7x_1 +4x_2+ 12x_3 , \ \ x'_2 = x_1 + 2x_2 + x_3 , \ \ x'_3 = -3x_1 -2x_2 -5x_3[/tex] . Then find the solution that satisfies  [tex]x \limits ^{\to} = \left[\begin{array}{c}0\\1\\-2\end{array}\right][/tex]

Answer:

[tex]\mathbf{c_1 = -3, c_2 = 2, c_3 = 2}[/tex]

Step-by-step explanation:

From the figures given above:

the matrix can be computed as,

[tex]\left[\begin{array}{ccc}7&4&12\\1&2&1\\-3&-2&-5\end{array}\right] x \limits ^{\to} = \left[\begin{array}{c}x_1\\x_2\\x_3\end{array}\right] = x \limits ^{\to} = \left[\begin{array}{c}x_1'\\x_2'\\x_3'\end{array}\right][/tex]

The first thing we need to carry out is to determine the eigenvalues of A,

where:

[tex]A = \left[\begin{array}{ccc}7&4&12\\1&2&1\\-3&-2&-5\end{array}\right][/tex]

[tex]|A-rI|=0[/tex]

[tex]\begin {vmatrix} 7-r&4&12\\1&2-r&1\\-3&-2&-5-r \end {vmatrix}=0[/tex]

the eigenvalues are r = 0, 1, 3

However, the eigenvector correlated to each eigenvalue can be calculated as follows.

suppose  r = 0

(A - rI) x = 0

[tex]\left[\begin{array}{ccc}7&4&12\\1&2&1\\-3&-2&-5\end{array}\right] \left[\begin{array}{c}x_1\\x_2\\x_3\end{array}\right] = \left[\begin{array}{c}0\\0\\0\end{array}\right][/tex]

now the eigenvector is [tex]\left[\begin{array}{c}-4\\1\\2\end{array}\right][/tex]

However, for eigenvalue = 1, we have :  [tex]\left[\begin{array}{c}-4\\1\\2\end{array}\right][/tex]

for eigenvalue = 3, we have:[tex]\left[\begin{array}{c}-2\\-1\\1\end{array}\right][/tex]

The solution now can be computed as :

[tex]x(t)= c_1 \left[\begin{array}{c}-4\\1\\2\end{array}\right] + c_2e^t \left[\begin{array}{c}-4\\3\\1\end{array}\right]+ c_3e^{3t} \left[\begin{array}{c}-2\\-1\\1\end{array}\right][/tex]

Similarly, the fundamental matrix solution is:

[tex]\left[\begin{array}{ccc}-4&-4e^t&-2e^{3t}\\1&3e^t&-e^{3t}\\2&e^t&e^{3t}\end{array}\right][/tex]

[tex]-4c_1 -4c_2-2c_3 =0 \\ \\ c_1 + 3c_2 -c_3 = 1\\ \\ 2c_1+c_2 +c_3 = -2[/tex]

Solving the above equation, we get:

[tex]\mathbf{c_1 = -3, c_2 = 2, c_3 = 2}[/tex]

Determine the level of measurement of the variable.Livability rankings for cities Choose the correct level of measurement.A. Ratio.B. Ordinal.C. Nominal.D. Interval.

Answers

Answer:

B. Ordinal

Step-by-step explanation:

The level of measurement used for a variable in statistical analysis determines what summary statistics and analysis are possible. In statistical analysis, we have three types of level of measurement.

Nominal , Ordinal  , Interval/ Ratio

The nominal is the most basic level of measurement. It is the  qualitative level of measurement such as color or number.  Data in Nominal scale of measurement are  stored as a word or  as numerical code.

Ordinal level of measurement  are variables based on ranks or hierarchy. Ordinal level of measurement posses a sequential step-wise order but the intervals between the variables are not  equal. They are usually expressed in frequencies.

Therefore, the level of measurement of variable that determines the livability rankings for cities based on their ranks or hierarchy is Ordinal.

The interval/ratio level of measurement  is the highest  level of measurement where  data are  being measured and ordered in a sequential process.

The number, N, of napkins used in a restaurant is N =f(C) = 2C, where C is the number of customers.
What is the dependent variable? The independent variable?

Answers

Answer:

The dependent variable is N; Number of Napkins

The independent variable is C; Number of Customers

Step-by-step explanation:

Given

[tex]N = f(c) = 2c[/tex]

Required

Determine the dependent and independent variable

Dependent variables are variables that standalone and are not influenced by other variables;

In the given parameters

The customers, C is the independent variable

Independent variables are the opposite of the dependent variables; They depend on other variables for their own values.

In the given parameters

The number of Napkin, N is the dependent variable

Solve for y. 7x-5y=-35

Answers

Answer:

y = 7(1 + x/5)

Step-by-step explanation:

7x - 5y = -35

-5y = -35 - 7x

5y = 35 + 7x

y = (35 + 7x) / 5

y = 7 + 7x/5

y = 7(1 + x/5)

how many 1/16 pieces are in 2/8? how many 1/8 pieces are in 10/16? how many 1/8 pieces are in 4/4?

Answers

Answer:

4/16 pieces are in 2/8, 5/8 pieces are in 10/16, 8/8 pieces are in 4/4

Step-by-step explanation:

multiply or divide both the numerator (top number) and the denominator (bottom number) by a number that will give you a common denominator

[tex]\frac{2*2}{8*2} =\frac{4}{16} \\\frac{10/2}{16/2} =\frac{5}{8} \\\frac{4*2}{4*2}=\frac{8}{8}[/tex]

for surge works at the super market as a casheir a bagger and a stocker he earns 7.00$ per hour as a casheir , $6.00 per hour as a bagger and $5.00 oer hour as a stocker in a given week serge works 4 hours as a cashier 9 hours as a bagger and 7 hours as a stocker what is serge average pay per hour

Answers

Answer:

$117.00

Step-by-step explanation:

-earns $7.00 per hour as a cashier

-earns $6.00 per hour as a bagger

-earns $5.00 per hour as a stocker

-works 4 hours as a cashier

-works 9 hours as a bagger

-works 7 hours as a stocker

First, find the amount of money earned in the week while working as a cashier.  We know from the information we picked out that Surge works $7.00 per hour as a cashier and he works 4 hours that week.  Therefore, we need to multiply the amount of money made per hour by the amount of hours worked in a week.:

$7.00/hr * 4 hrs=$28.00 made as a cashier

Next, find the amount of money Surge made as a bagger.  Do the same thing as you did with the cashier calculations, except that this time, he earns $6.00 per hour and he works 9 hours as a bagger.:

$6.00/hr * 9 hrs=$54.00 made as a bagger

Then, find the amount of money made as a stocker.  It's the same as everything else, just that Surge know earns $5.00 per hour and he works 7 hours as a stocker.  So, do the last set of multiplication:

$5.00/hr * 7hrs=$35.00 made as a stocker

Finally, the question asks for the average amount of money made per week, so add up all you calculations to get that average amount:

$28.00+$54.00+$35.00=$117.00

Surge makes an average of $117.00 in a given week.

The serge average pay per hour will be $117.00.

What is an expression?

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

It is given that earns $7.00 per hour as a cashier, earns $6.00 per hour as a bagger, earns $5.00 per hour as a stocker, and works 4 hours as a cashier -works 9 hours as a bagger -works 7 hours as a stocker.

First, find the amount of money earned in the week while working as a cashier.  We know from the information we picked out that Surge works $7.00 per hour as a cashier and he works 4 hours that week.  Therefore, we need to multiply the amount of money made per hour by the number of hours worked in a week.:

$7.00/hr  x  4 hrs=$28.00 made as a cashier

Next, find the amount of money Surge made as a bagger.  Do the same thing as you did with the cashier calculations, except that this time, he earns $6.00 per hour and he works 9 hours as a bagger.:

$6.00/hr x 9 hrs=$54.00 made as a bagger

Then, find the amount of money made as a stocker.  It's the same as everything else, just that Surge now earns $5.00 per hour and he works 7 hours as a stocker.  So, do the last set of multiplication:

$5.00/hr x  7hrs=$35.00 made as a stocker.

Finally, the question asks for the average amount of money made per week, so add up all your calculations to get that average amount:

$28.00+$54.00+$35.00=$117.00

Therefore,  the serge average pay per hour will be $117.00.

To know more about Expression follow

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A building feet tall has a shadow that is feet long. Find the angle of elevation of the sun to the nearest hundredth of a degree.

Answers

Answer:

The angle of elevation of the sun to the nearest hundredth of a degree is 44.07°

Step-by-step explanation:

Here is the complete question:

A building 86.53 feet tall has a shadow that is 89.39 feet long. Find the angle of elevation of the sun to the nearest hundredth of a degree.

Step-by-step explanation:

Please see the attachment below for an illustrative diagram:

From the diagram

/AC/ is the height of the building

/CB/ is the length of the shadow

/AC/ = 86.53 feet

/CB/ 89.39 feet

θ is the angle of elevation

Consider triangle ABC

/AC/ is the opposite

and /CB/ is the adjacent

From

tanθ =[tex]\frac{Opposite}{Adjacent}[/tex]

Then,

tanθ = [tex]\frac{/AC/}{/CB/}[/tex]

tanθ = [tex]\frac{86.53}{89.39}[/tex]

tanθ = 0.9680

∴θ = tan⁻¹(0.9680)

θ = 44.0686°

θ = 44.07° (to the nearest hundredth of a degree)

Hence, the angle of elevation of the sun to the nearest hundredth of a degree is 44.07°

The sum of Micah’s age and Aria’s age is 29. Aria is 5 years older than twice Micah’s age. Let x represent Micah’s age. The equation that can be used to find Micah’s age is x + (x + 5) = 29. x + (2 x + 5) = 29. x + (2 x) = 29. x + (2 x minus 5) = 29

Answers

Answer:

B) x+(2x+5)=29

Step-by-step explanation:

Micah = x

Aria =2x+5

x+(2x+5)=29

Answer:

let micah age be X and Aria age be Y then go through with question what did it say .

What’s half of 4,538

Answers

Answer: 2,269

Step-by-step explanation: Divide by 2 to get half of a number

Answer:

2269

Step-by-step explanation:

just simply divide 4538 by 2

A plane is 2 dimensional. Group of answer choices True False

Answers

Answer:

Step-by-step explanation:

False

What is the graph of the parent linear function. It shows 3 graphs & we pick one! Please help! I have to get this done ASAP! Will give lots of points for the correct answer!!!

Answers

Answer:

I'd ont now that your questions

what is the input set of a function called

Answers

Answer:

A function is a mathematical device that converts one value to another in a known way. ... The set of allowable inputs to a given function is called the domain of the function. The set of possible outputs is called the range of the function.

Step-by-step explanation:

Hopefully this was mindfull

The input set of a function is called the "Domain" of the function.

What is the range and domain of a function?

A function's range is the set of all values that the function accepts, and its domain is the set of all values for which the function is defined.

The domain is for the independent variable while the range is for the dependent variable.

For any function, the values which we are putting form a set of intervals called domain.

For example f(x) = x²

Now if we put x = 1 then it is called as domain variable while the value of function at x = 1 its that f(1) = 1 called range variable.

Hence "The input set of a function is called the "Domain" of the function".

For more details about the range and domain of the function,

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i will GIVE THE BRAINIEST
Without simplifying, select all the expressions that represent a rational number.​

Answers

Answer:

The first and the fourth one.

The ones that could be rationalized are automatically the ones you should pick.

Simplify
20/3root5 solve it​

Answers

Step-by-step explanation:

hope it will help you.......

The sun is 24 degreesabove the horizon. It makes a 51 m long shadow of a tall tree. how talll is the tree

Answers

Answer:

The tree is approximately 22.707 meters tall.

Step-by-step explanation:

The geometric diagram of the problem is included below as attachment. The height of the tree is found by means of trigonometric functions:

[tex]\tan \alpha = \frac{h}{w}[/tex]

Where:

[tex]\alpha[/tex] - Elevation angle, measured in sexagesimal degrees.

[tex]h[/tex] - Height of the tree, measured in meters.

[tex]w[/tex] - Length of the tree shadow, measured in meters.

The height of the tree is cleared in the equation:

[tex]h = w\cdot \tan \alpha[/tex]

If [tex]w = 51\,m[/tex] and [tex]\alpha = 24^{\circ}[/tex], the height is:

[tex]h = (51\,m)\cdot \tan 24^{\circ}[/tex]

[tex]h \approx 22.707\m[/tex]

The tree is approximately 22.707 meters tall.

The combined (verbal + quantitative reasoning) score on the GRE (Graduate Record Exam) is normally distributed with mean 1049 and standard deviation 189. Suppose n = 16 randomly selected students take the GRE on the same day.
a. What is the probability that one randomly selected student scores above 1100 on the GRE?
b. Describe the sampling distribution of the sample mean for the 16 students (description should include mean, standard deviation and shape).
c. What is the probability that a random sample of 16 students has a mean GRE score that is less than 1100?
d. What is the probability that a random sample of 16 students has a mean score that is more than 1100?
e. If the sample size in (d) above was increased to 64, what affect would it have on the probability (more, less, the same, can't tell) and why?

Answers

Answer:

Kindly check explanation

Step-by-step explanation:

Given The following :

Assume score is normally distributed with;

Mean (m) = 1049

Standard deviation (sd) = 189

Numbw rof observations (n) = 16

A) What is the probability that one randomly selected student scores above 1100 on the GRE?

Zscore = (x - m) / sd

X = 1100

Zscore = (1100 - 1049) / 189

Zscore = 51 / 189 = 0.27

From z-table ; 0.27 correspond to 0.6064

P(X > 1100) = 1 - P(X < 1100) = 1 - 0.6064 = 0.3936

2) sample mean will be equal to population mean = 1049

Sample Standard deviation : (population standard deviation / sqrt (n))

= 189 / sqrt(16) = 189/4 = 47.25

Shape of distribution is approximately normal

3)

P(Z < 1100)

X = 1100

Zscore = (x - m) / standard error

Standard Error = population standard deviation / sqrt (n)

= 189 / 4 = 47.25

Zscore = (1100 - 1049) / 47.25

Zscore = 51 / 47.25 = 1.0793650 = 1.08

From z-table :

P(Z < 1100) = 0.8599

4)

D.)

P(Z > 1100)

X = 1100

Zscore = (x - m) / SE

Zscore = (1100 - 1049) / 47.25

Zscore = 51 / 47.25 = 1.0793650 = 1.08

From z-table :

P(X > 1100) = 1 - P(X < 1100) = (1 - 0.8599) = 0.140

E)

With a sample size of 64

Standard Error becomes:

189 / sqrt(64) = 189/ 8 = 23.63

Zscore = (1100 - 1049) / 23.63

Zscore = 51 / 23.63 = 2.16

P(Z > 2.16) = 1 - P(Z < 2.16) = 1 - 0.9846 = 0.0154

Probability is less due to increase in sample size

Find the domain of the function.
f(x) = - 4x + 5
The domain is (Type your answer in interval notation.)

Answers

Answer:

(-∞,∞)

Range (-∞,∞)

Step-by-step explanation:

Today,the badminton team and the basketball team had games.the badminton team plays every 4 days and the basketball team plays every 6 days.after how many days will the teams have their games in the same day?? Please help asap im really struggling right now!

Answers

Answer:
12 days

Explanation:
So what the question us a king us to do is find the LCM (lowest common multiple).

We can list all the multiples of 4 and then 6, and then find the LCM.

Multiples of 4: 4, 8, 12, 16, 20, 24
Multiples of 6: 6, 12, 18, 24

They both have 12 and 24 as their common multiple.
We have got to find the lowest common multiple, which is 12 as it is smaller than 24.

Hope this helped you!

Please help me out!!!

Answers

Answer:

[tex]= 2^2^8 \times 3^-^2^0\times 9^4[/tex]

Step-by-step explanation:

[tex]\mathrm{Apply\:exponent\:rule}:\quad \left(a\times\:b\right)^n=a^nb^n\\\left(2^7\times\:3^{-5}\times\:9\right)^4=\left(2^7\right)^4\times\left(3^{-5}\right)^4\times\:9^4\\=\left(2^7\right)^4\cdot \left(3^{-5}\right)^4\cdot \:9^4\\\\= 2^2^8 \times 3^-^2^0\times 9^4[/tex]

Answer:

[tex] {2}^{28}. {3}^{ - 20}. {9}^{4} [/tex]

Multiply the exponent 4 by each of the exponents inside the parentheses.

Hope this helps..

Good Luck!

One in 1000 adults is afflicted with a rare disease forwhich a diagnostic test has been developed. The test is such,that when an individual has the disease, a positive result willoccur 98% of the time, while an individual without the disease willshow a positive result only 1% of the time. If a randomlyselected individual is tested and the result is positive, what isthe probability that the individual has the disease?

Answers

Answer:

0.0893

Step-by-step explanation:

Let A be the event that the individual has the disease

Let Aⁿ be the event that the individual doesn't have the disease

Let B be the event of a positive result showing.

Now,

We are told One in 1000 adults is afflicted with the disease.

Thus;

P(A) = 1/1000 = 0.001

P(Aⁿ) = 1 - 0.001 = 0.999

Also,we are told that when an individual has the disease, a positive result will occur 98% of the time.

Thus;

P(A|B) = 98% = 0.98

Also, we are told that an individual without the disease will show a positive result only 1% of the time. Thus;

P(Aⁿ|B) = 1% = 0.01

Now, from fundamental rule, let's find P(B). Thus;

P(B) = [P(A|B) × P(A)] + [P(Aⁿ|B) × P(Aⁿ)]

P(B) = (0.98 × 0.001) + (0.01 × 0.999)

P(B) = 0.01097

Now, from Baye's theorem, If a randomly selected individual is tested and the result is positive, the probability that the individual has the disease is given by;

P(A|B) = [P(A|B) × P(A)]/P(B)

P(A|B) = (0.98 × 0.001)/0.01097

P(A|B) = 0.0893

Find an equation of a sphere if one of its diameters has endpoints (4, 1, 6) and (8, 3, 8).

Answers

Answer:

The equation of a sphere with endpoints at (4, 1, 6) and (8, 3, 8) is [tex](x-6)^{2}+(y-2)^{2}+(z-7)^{2} = 6[/tex].

Step-by-step explanation:

Given the extremes of the diameter of the sphere, its center is the midpoint, whose location is presented below:

[tex]C(x,y,z) = \left(\frac{4+8}{2},\frac{1+3}{2},\frac{6+8}{2}\right)[/tex]

[tex]C(x,y,z) = (6,2,7)[/tex]

Any sphere with a radius [tex]r[/tex] and centered at [tex](h,k,s)[/tex] is represented by the following equation:

[tex](x-h)^{2}+(y-k)^{2}+(z-s)^{2} = r^{2}[/tex]

Let be [tex](x,y,z) = (4,1,6)[/tex] and [tex](h,k,s) = (6,2,7)[/tex], the radius of the sphere is now calculated:

[tex](4-6)^{2}+(1-2)^{2}+(6-7)^{2}=r^{2}[/tex]

[tex]r = \sqrt{6}[/tex]

The equation of a sphere with endpoints at (4, 1, 6) and (8, 3, 8) is [tex](x-6)^{2}+(y-2)^{2}+(z-7)^{2} = 6[/tex].

What did Taylor and her schoolmates do to be certain their educational endeavors remained secret?

Answers

Answer:

They wrapped their school textbooks with paper.

Step-by-step explanation:

Susie King Taylor was born in 1848, a period when African Americans were not allowed to learn how to read and write. She lived with her grandmother and siblings. Taylor would secretly go to the house of her grandmother's friend known as Mrs. Woodhouse. For two years, she would do this secretly with her brother, wrapping her textbooks with paper so as not to be seen by the policemen.

She also made a white friend known as Katie O'Connor who promised to teach her if she did not tell her father. Katie did this for four months. Later, their landlord's son also volunteered to teach Susie.

50pts.
A problem states: "There are 2 more horses than cows in a field. There are 16 animals in the field in all. How many horses are there in the field?" Let c represent the number of cows. Which equation represents the situation?

c + 2 = 16

2c−2=16

2(c+2)=16

2c + 2 = 16

Answers

Answer:

its the 3rd 1

Step-by-step explanation:

Whats the prime factorization of 42

Answers

Answer:

3,7,2

Step-by-step explanation:

42 = 21*2

42 = 3*7*2

Ta da!

Hope this helps! :)

(pls mark brainliest)

Answer: The prime factorization is 46 = 2 times 3 times 7.

Step-by-step explanation:

So we have the number 42.

First, break 42 up into 2 and 21.

Then split those two numbers further into 3 and 7 from 21 (because they are the factors of 21).

Since you can't break it down any further, take the prime numbers from there and multiply them against each other. This is why it is called prime factorization.

Don't simplify any further and don't multiply them together. Just keep it as 46 = 2 times 3 times 7. There you go!

a pool in the shape of a rectangular prism is 6 meters long and 3 meters wide. the water in the pool is 1 meter deep.
a. the density of water is about 1 gram per cubic centimeter. find the number of kilograms of water in the pool. question 2
b. you add 6000 kilograms of water to the pool. what is the depth of the water in the pool? write your answer as a fraction. the water is about meters deep.

Answers

Answer:

1). Mass of water present= 18000 kg

2).4/3 meters deep

Step-by-step explanation:

Area of the rectangle= 6*3= 18m²

Volume of water in the pool

= Deepness of water*area of rectangle

= 1*18

= 18 m³

density of water is about 1 gram per cubic centimeter

In kg per m³= 1000 kg/me

Mass of water present= density*volume

Mass of water present= 1000*18

Mass of water present= 18000 kg

2)6000 kilograms of water is added to 18000 of

Total mass present= 6000+18000

Total mass present=24000 kg

If density= 1000kg/m³

Volume present= mass/density

Volume present= 24000/1000

Volume present= 24 m³

Area of the rectangle= 18 m²

deepness of the pool= volume/area

deepness of the pool= 24/18

deepness of the pool= 4/3 meters deep

Fabio is climbing a tree. He climbs up 7 feet. Then he falls back 3 feet.

Answers

Answer: Fabio is four feet above the ground level.

Step-by-step explanation:

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