There is 42,000 litres of water in the lake this year. Find the water in the lake, a year ago if the
water of the lake is decreased by 30% every year. ​

Answers

Answer 1

Answer:

60,000 liters

Step-by-step explanation:

30% of 60000 = 18000

60000 - 18000 = 42000


Related Questions

Line segment AB = 12, its image after a dilation is 36. What is the scale factor of the dilation?

Answers

The scale factor of the dilation is 3

How to determine the scale factor of the dilation?

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

Line segment AB = 12 units

After the dilation = 36 units

The scale factor of the dilation is then calculated as

Scale factor of the dilation = After the dilation/Line segment AB

Substitute the known values in the above equation, so, we have the following representation

Scale factor of the dilation = 36/12

Evaluate

Scale factor of the dilation = 3

Hence, the scale factor is 3

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Evaluate 5+6x,when x is 4

Answers

Answer:
29

Hope this helps!
The answer is 29 hope it helps

Can you please help me

Answers

Answer:

x=16

Step-by-step explanation:

the angle would be 1/2 of the arc so here's the steps

(2)7x+16=18x-32

14x+32=18x-32

    +32        +32

14x+64=18x

-14x .     -14x

64=4x

64/4=4x/4

x=16

What is 4 4/5 + 1 1/3?

Answers

Answer:

[tex] \frac{92}{15} [/tex]

Step-by-step explanation:

change to improper

[tex] \frac{24}{5} + \frac{4}{3} [/tex]

this gives us

[tex] \frac{92}{15} [/tex]

final answer

plz mark as brainliest

Answer:

[tex]\frac{92}{15} or 6\frac{2}{15}[/tex]

Step-by-step explanation

hope this helps have a good day :)

A matched pairs design involves: matching pairs of participants based on a variable and then randomly assigning one member of each pair to each group. randomly assigning participants to groups and then matching pairs of participants. matching pairs of participants based on a variable and then randomly assigning half the pairs of each group. an attempt to control for order effects.

Answers

Answer:

matching pairs of participants based on a variable and then randomly assigning one member of each pair to each group.

Step-by-step explanation:

A control experiment can be defined as an experiment in which a condition assumed to be a probable cause of the effect is being compared to the same situation by the scientist without involving or using the suspected condition.

A control group generally makes an experiment to work because they are not exposed to the variables and a neutral treatment.

On the other hand, an experimental group can be defined as a collection of participants that are subjected to the independent variable.

A matched pairs design involves matching pairs of participants based on a variable and then randomly assigning one member of each pair to each group. Thus, it's a process which typically involves pairing each individual in an experimental group with respect to another in the control group.

Generally, a matched pairs design is often times used when only a small group of participants are available for an experimental study or research.

What should Jayce conclude is the distance around the largest circle on the radar screen? Use pi = 3.14.

Answers

Step-by-step explanation:

plz mark as brainlist////

A 12 ft ladder leans against the side of a house. The top of the ladder is 11 ft off the ground. Find x , the angle of elevation of the ladder. Round your answer to the nearest tenth of a degree.

Answers

The value of angle of elevation (x) is 67°

What is angle of elevation?

The angle of elevation is an angle that is formed between the horizontal line and the line of sight. If the line of sight is upward from the horizontal line, then the angle formed is an angle of elevation.

Angle of elevation can be found by using trigonometry ratio

The height of the house is the opposite and the height of the ladder is the hypotenuse.

Therefore from trigonometry ratio;

sin x = 11/12

sin x = 0.92

x = sin^-1 (0.92)

x= 66.93°

x = 67° ( nearest degree)

Therefore the value of angle of elevation is 67°

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Find the measure of m∠A (inside the triangle).

Find the measure of m∠B.

Find the measure of m∠C.

Answers

Answer:

m<A=40°

m<B=55°

m<C=85°

Step-by-step explanation:

Add up all the angles to equal 180 because all triangles add up to 180.

(2x+5)+(x+15)+x=180

Simplify.

4x+20=180

Solve for x.

x=40.

Plug x into the equations. Hope this helps.

what's 6772239 - 283474

Answers

Answer:

6488765

Step-by-step explanation:

I did the math hope this helps!!

Does anyone know how to solve this?

And please explain your answer

Answers

[tex] \huge \fbox{Answer : }[/tex]

The value of k for which

[tex] \sin(k - x) = \cos(x) [/tex]

is

[tex] \dfrac{\pi}{2} [/tex]

Ellie brought 2 packs of hot dogs , 3 lbs of hamburger, and 2 lbs. of potato salad. How much did she spend?

Answers

Ellie spend of $37.8 for  2 packs of hot dogs , 3 lbs of hamburger, and 2 lbs. of potato salad

What is Equation?

Two or more expressions with an Equal sign is called as Equation.

The amount is not given for each hot dog, hamburger and potatos.

But Ellie brought 2 packs of hot dogs ,

3 lbs of hamburger, and

2 lbs. of potato salad

Let us consider each hot dog is $6

Hamburger is $5.6 and potatoes is $4.5

Total amount is 2(6)+3(5.6)+2(4.5)

12+16.8+9

$37.8

Hence, Ellie spend of $37.8 for  2 packs of hot dogs , 3 lbs of hamburger, and 2 lbs. of potato salad

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If ⅓y = 9; then y =?​

Answers

Answer:

y = 27

Eexplanation:

1/3y = 9

y/3 = 9

y = 9 × 3

y = 27

The answer is 27. We plug in 9 for y and get the equation 1/3(9). 1/3 times 9 equals 27.

An equilateral triangle with side length 2.5 is dilated with a scale factor of 6. What is the length of one side of the new figure?

Answers

Answer:

18

Step-by-step explanation:

Identify each angle pair as Complementary, Supplementary, Adjacent, or Vertical. Select from the drop
down menu. Select the most specific choice.

Answers

Answer:

A. Adjacent  

B. Complementary

C. Complementary

Step-by-step explanation:

Please help I don’t understand this

Answers

On solving the provided question, we can say that - the area of the following rectangle is 200 cm sq.

What is rectangle?

A rectangle in Euclidean plane geometry is a quadrilateral with four right angles. You might also describe it as follows: a quadrilateral that is equiangular, which indicates that all of its angles are equal. The parallelogram might also have a straight angle. Squares are rectangles with four equally sized sides. A quadrilateral of the shape of a rectangle has four 90-degree vertices and equal parallel sides. As a result, it is sometimes referred to as an equirectangular rectangle. Because its opposite sides are equal and parallel, a rectangle is also known as a parallelogram.

here,

we have

L = 20 cm

and B = 10 cm

Area of rectangle, A =L X B = 20 X 10 = 200 cm sq.

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Please help!!! Also do not put a link as your answer. Whoever answers this first with work shown will get Brainliest, and 30 points.
What is the equation of a parabola with (-3,3) as the focus, and y=5 as the directrix?
Remember no link! :)

Answers

Answer y = 1/4 (x+3)^2 + 4

Step-by-step explanation:

If the focus is (-3, 3) and the directrix is y=5, the vertex is at (-3, 4). a = 1/4p, p=1, a=1/4. (h,k) is the vertex.

y=a(x-h)^2 +k

y=1/4(x+3)^2+4

Does, this make any sense to anyone? I honestly don't understand it. I'm learning functions by the way.

Answers

Answer:     t = 7

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

Explanation:

If we replace every copy of x with t, then we go from this

F(x) = 3x+5

to this

F(t) = 3t + 5

All we've done really is change the letter. We still are dealing with a variable. We're told that F(t) is equal to 26, which would allow us to replace the "F(t)" with "26" in the second equation above.

So we now have the equation 26 = 3t+5 which is the same as 3t+5 = 26

Let's solve for t

3t+5 = 26

3t = 26-5 .... subtract 5 from both sides

3t = 21

t = 21/3 .... divide both sides by 3

t = 7  is the answer

Now note that...

F(t) = 3t + 5

F(7) = 3*7 + 5 .... replace t with 7

F(7) = 21 + 5

F(7) = 26

This means we got F(t) = 26 when t = 7

It's the same as saying x = 7 leads to F(x) = 26.

This helps confirm we have the correct answer.

Answer:

t = 7

Step-by-step explanation:

I hope this helps

Math To Do, Ready
login ready.com/student/dashboard/home
Park View Apartments has 2 buildings. Each building has 3 floors. Each floor has
16 windows. What is the total number of windows in the Park View Apartment
buildings?

Answers

Answer:

(probably) 96

Step-by-step explanation:

2 buildings, 3 floors, 16 windows.

first, 16x3=48

and then 48x2=96

So, the total number is 96.

Two straight lines are perpendicular to each other at point M. One of the lines passes through (2, 6) and the equation of the other line is 2y + 3x -5 = 0. Calculate the co-ordinates of M.​

Answers

Answer: The equation of a line in the form y = mx + b can be written as y - mx - b = 0. So we can rewrite the equation of the line as 2y - 3x + 5 = 0. This means that the slope of the line is -3/2.

The slope of a line perpendicular to this line would be the negative reciprocal of -3/2, which is 2/3. Let's call the point M (x, y). We know that the line passing through (2, 6) has a slope of 2/3. So we can write the equation of this line as:

y - (2/3)x - b = 0

Substituting the point (2, 6) into this equation, we get:

6 - (2/3)(2) - b = 0

b = 4

So the equation of the line passing through (2, 6) is:

y - (2/3)x - 4 = 0

To find the coordinates of point M, we need to find the point where these two lines intersect. Setting the two equations equal to each other and solving for x and y, we get:

2y - 3x + 5 = y - (2/3)x - 4

5 - 2y = y - (5/3)x + 4

(5/3)x = 3 - y

x = (3 - y) * (3/5)

Substituting this expression for x into one of the original equations, we can solve for y:

2y - 3((3 - y) * (3/5)) + 5 = 0

2y - (9 - 3y)(3/5) + 5 = 0

(10/5)y - (9/5) + 5 = 0

y = (9/5) + (5/5)

y = 2

Substituting this value for y back into the expression for x, we get:

x = (3 - 2) * (3/5)

x = 1

So the coordinates of point M are (1, 2).

Step-by-step explanation:

Determine which binomial is a factor of 4x^3+17x^2+7x+12 A. X+12 B. x +4 C. x +7 D. X-4

Answers

Answer:

D is correct Answer. x-4. THANK YOU.

A lumber company is making boards that are 2578.0 millimeters tall. If the boards are too long they must be trimmed, and if they are too short they cannot be used. A sample of 20 boards is made, and it is found that they have a mean of 2580.2 millimeters with a variance of 64.00. Is there evidence at the 0.1 level that the boards are either too long or too short?
1. State the hypotheses.
2. Find the value of the t test statistic.
3. Specify if the test is one-tailed or two-tailed.
4. Determine the decision rule.
5. Determine the conclusion.
A) Reject Null Hypothesis
B) Fail to Reject Null Hypothesis

Answers

Answer:

-0.750

Step-by-step explanation:

A right triangle with coordinates A (-2,5), B (-2, 9) and C (4,5) is first rotated 90 degrees counterclockwise and
then translated 2 units left and 3 units down to form triangle A'B'C'. What is the measure of angle B'A'C',
in degrees, in the resulting figure?

Answers

Answer:

90 degree

Step-by-step explanation:

since the original angle BAC is 90 degree, no matter the triangle is rotated or translated, the angle remain unchanged

PLZ Hlp extra credit imma fail no link!!!

Answers

Answer:

B, C, and F

Step-by-step explanation:

You can double check my answers and it'll make sense.

2 to the power of 4 means you multiply 2 by itself 4 times.

The answer of that would be 16.

4 x 4 also equals 16 so therefore those three answers are equivalent.

Answer:

a and c

Step-by-step explanation:

it says equivalent to

Which triangles are similar to AABC?
B
10
С
10
А

Answers

Khan academy I have it too. I will answer your question since you like khan academy
The answer is really C the reason I know is because I too have done this before

Neither of the triangles are similar to the one given.

What are similar triangles?

Two triangles are said to be similar if, they have congruent corresponding angles and sides are in equal ratios.

Given are three triangles, we need to find which of them are similar to the given one,

According to the definition of the similar triangles,

1) 10 / 5.5 = 10 / 5.5 ≠ 4 / 2

So, they are similar triangles.

2) 30 / 10 = 30 / 10 ≠ 14 / 4

Hence, Neither of the triangles are similar to the one given.

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What is the form of the difference of squares identity?

Answers

Pretty sure its a because b and c will not result in a negative
I agree with the other person it’s B

A linear function as a rule shown

Answers

The equation that represents the linear function is y = 11 + 7x.

What is the solution to the linear equation?

The solution of a linear equation is defined as the points, in which the lines represent the intersection of two linear equations. In other words, the solution set of the system of linear equations is the set of all possible values to the variables that satisfies the given linear equation.

We have given the rules:

x: a number

y: 11 more than 7 times x.

Linear equations are the equations of degree 1. It is the equation for the straight line.

The standard form of the linear equation is ax+by+c =0,

where a ≠ 0 and b ≠ 0.

From the given conditions we can form the linear equation:

That is,

y = 11 + 7x,

Hence, the equation that represents the linear function is y = 11 + 7x.

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Nevaeh has $0.80 worth of nickels and dimes. She has a total of 11 nickels and dimes altogether. Graphically solve a system of equations in order to determine the number of nickels, x,x, and the number of dimes, y,y, that Nevaeh has.

Answers

Nevaeh has 6 nickels n 5 dimes

Write in scientific notation (multiply)
(5x10^18)(3x10^6)

Answers

Answer: 3 x [tex]10^{24}[/tex]

Step-by-step explanation:

Determining Which Measure
Check
Determine the appropriate measure for each description.
Amount of confetti stuffed in a tube
Volume
Surface Area
Amount of soup in a can
Amount of paper to cover a can
Amount of paint for outside of tube
Amount of cardboard to make a tube
Amount of dirt in a flower pot
5) Intro
Done
Tutoring
Activity

Answers

Answer:

VOLUME:

amount of confetti stuffed in a tube

amount of soup in a can

amount of dirt in a flower pot

SURFACE AREA:

amount of paper to cover a can

amount of paint for outside of tube

amount of cardboard to make a tube

Step-by-step explanation:

Pllzzz help me with this!!!!

Answers

Solving the provided question, we can say that the quadratic equation is [tex]-16t^2 +vt +s[/tex] so answer is -16+48+3 = 35

What is quadratic equation?

A quadratic equation is x ax2+bx+c=0, which is a quadratic polynomial in a single variable. a 0. The Fundamental Theorem of Algebra ensures that it has at least one solution since this polynomial is of second order. Solutions may be simple or complicated. An equation that is quadratic is a quadratic equation. This indicates that it has at least one word that has to be squared. The formula "ax2 + bx + c = 0" is one of the often used solutions for quadratic equations. where are numerical coefficients or constants a, b, and c. where the variable "X" is unidentified.

the quadratic equation is

[tex]-16t^2 +vt +s[/tex]

v = 16

s =3

t =

so answer is -16+48+3 = 35

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