The amount of air in a Suba diving tank with a capacity of 2400 liters is decreasing at a rate of 48

Answer:

6 liters

Step-by-step explanation:

Given:

The 9 litre of 50% acidic liquid.

Required:

What quantity of water should be added to reduce 9 liters of 50% acidic liquid to 30% acidic liquid ?

Explanation:

The solution steps are:

Acidic liquid in 9 liters lotion = (50/100) * 9 = 4.5 liters

Then water = 9 - 4.5 = 4.5 liters

Let 'x' liters be the required quantity of water.

Then :-

[tex]\frac{4.5}{9+x} = \frac{30}{100} = \frac{3}{10}[/tex]

That leads to :-

[tex]3(9+x) = 45 == > 3x = 18[/tex]

Which gives us :-

[tex]x=6[/tex]

Thus required quantity of water = 6 liters

Final answer:

6 liters

(Hi fyi this answer took a lot of time & effort to make sure it was accurate, precise and to the point to be produced, so if you could opt this answer as the brainliest it would mean the world to me,)

Stay positive and Take care,

A fellow mate,

Cheers !

The option that is an equivalent expression of 15x² +12x + 8 is C. 12x + 15x² + 8.

Expressions that are equivalent do the same thing even when they have distinct appearances. When we enter the same values for the variable, two algebraic expressions that are equivalent have the same values.

If two systems of equations have the same solution, they are equivalents. In algebra, 2(2x - 3y + 6) is equal to 4x -6y + 12 as an example of an equivalent expression.

In this case, it should be noted that 15x² +12x + 8 is the same as 12x + 15x² + 8. Therefore, the correct option is C.

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Percentage - The amount to pay for the policy $596,774.19

What is Percent ?

A percentage is a figure or ratio stated as a fraction of 100 in mathematics. Although the abbreviations "pct.", "pct.", and occasionally "pc" are also used, the percent symbol, "%," is frequently used to indicate it. A % is a number without dimensions and without a measurement system.

Given that,

Investment policy pay
PV = $37,000 year;
investment return: 6.2%
r = 6.2%
r = 6.2/100
r = 0.062

We must use one year as the number of periods even if we just need to calculate the value for one year. We employ: to determine the FV of a lump sum.

FV=PV/r
FV=37,000/0.062
FV= $596774.1935
to 2 decimal point
FV=$596,774.19

Hence, $596,774.19 is to pay for the policy

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Answer:

3/4 - 5/6 is

0.08333333333

branliest??

Answer:

Step-by-step explanation:

you have a 1/6 of rolling a certain number on a regular die.

if you try to get 5 or 6 you have a 2/6 chance of rolling either of them

if you try to evens you have a 3/6 chance of rolling 2,6, or 4

Answer:

The slope is -5/2

Step-by-step explanation

I tried to show how I solved this problem in the image, but its not too great, so I hope this helps. :)

The points at which the graph of f(x) has a horizontal tangent line are; x = -1, x = 0.4045, x = 2.07

The horizontal tangent of a function is simply defined as the point where the slope of the function is 0.

Now, we are give the function as;

f(x) = (2x² - 2x - 1)/(x⁴ + 1)

Slope of this function is;

f'(x) = -2(2x⁵ - 3x⁴ - 2x³ - 2x + 1)/(x⁴ + 1)²

Now, when the slope is zero, we will have that;

-2(2x⁵ - 3x⁴ - 2x³ - 2x + 1) = 0

Using an online polynomial root calculator, the roots of this slope are;

x = -1, x = 0.4045, x = 2.07

These values are the points where there is a horizontal tangent line.

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Answer:

f(-1) = 6

Explanation:

Looking at the piecewise function given, we see that

f(x) = -3x -5

for x different from -1

And

f(x) = 6

for x = -1

So, we choose the suitable one, since x = -1

Answer:

c

Step-by-step explanation:

Bertha's dive is 5 times farther than the end of Vernon's dive

A ratio can defined mathematical as an ordered pair of numbers, like variables b and c, when written form b / c with the denominator greater than the value zero.

It explains how many times a particular number is composed of another number in a given proportion.

It is also seen as the comparison of two quantities, elements or numbers having the same unit measure. It goes further to explain how much of one of the element or quantity contains another.

This is done on the basis of  their magnitude or sizes.

Given that;

Bertha's dive ended = -25 m

Vernon's dive ended = -5 m

Divide the values

= -25/-5

= 5 times

Hence, the value is 5 times

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The scale factor of model of Eiffel tower is 3:1640.

The scale factor is the ratio of measure of small length to large length. The base of both actual tower and scale down model is mentioned in question. Keep the values in ratio to find the scale factor.

Scale factor = 0.75 : 410

Removing decimal to get the whole number

Scale factor = 75:41000

Dividing the both parts of ratio by 25 to find the scale factor of mentioned model

Scale factor = 3:1640

As the Eiffel tower is scaled down in the model, the scale factor is 3:1640.

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Answer:

Equation of line is given as y = mx + c, where m is the gradient and c is the y-intercept.

First find the gradient.

Formula of gradient is given as (y2-y1)÷(x2-x1) or (y1-y2)÷(x1-x2)

Gradient = (-1-(-2))÷(3-(-2))

= (-1+2)÷(3+2)

= 1/5

Equation is y = 1/5 + c

Substitute either one of the points into the equation to find c.

-2 = 1/5(-2) + c

c = -8/5

Hence equation of the line is y = 1/5x - 8/5

A=a+b/2×h=5+10/2×4=30. this might helpful

Given:

The distance travelled by the ball is, d = 40 m.

The maximum height the ball reached is, h = 3 m.

The objective is to find the distance travelled by the ball at a height of h' = 2 m.

. (vertex)

n, the

The value of x can be calculated using the general form of the equation of parabola,

Here, (p,q) stands for the vertex of the parabola (20,3).

To find the value of a, consider a coordinate (0,0) and substitute the obtained values in the general equation of parabola.

Now, consider the coordinate of the required distance x of the ball, (x,2).

Substitute the above coordinate, the value of a and the vertex in the equation of parabola.

To solve the square on RHS, take square root on both sides of the equation.

Since, the height of 2 m of ball can be obtained at either side of the vertex.

So the distance between the vertex and the required position is

Then, the other possible position of the ball is,

Hence, the height of the ball will be 2m, either at a distance of 8.5m from origin or 31.5m from the origin.

Answer:

B. 5a² + 3b + 6a

Step-By-Step Explanation:

First, see what has like terms. 7a² and -2a² both have the exponent 2 and the letter a, so you can combine those to get 5a². 3b and 6a cannot be combined because they have a different letter. So, 5a² + 3b + 6a is your answer.

The average rate of change from

3 to 5 is -16.

0 to 2 is -4

-3 to 0 is -6.

It represents the typical amount by which the function changed for each unit over that time. On the function graph, it is calculated using the slope of the line connecting the interval's ends.

Given Data

Equation = 4 -2x²

Formula-

[tex]\frac{f(a)-f(b)}{a-b}[/tex]

a)To find the average rate of change from 3 to 5

a = 5, b = 3

Equating values in the formula

[tex]\frac{4-2(5^{2} )-(4-(3)}{5-3}[/tex]²

[tex]\frac{-46+14}{2}[/tex]

-[tex]\frac{32}{2}[/tex]

-16

The average ROC 3 to 5 is -16.

b) The average ROC from 0 to 2

a = 2 b=0

Equating values in the formula

[tex]\frac{4-2(2^{2})-(4-2(0) }{2-0}[/tex]

[tex]\frac{-4-4}{2}[/tex]

[tex]\frac{-8}{2}[/tex]

-4

The average ROC from 0 to 2 is -4

c)The average ROC from -3 to 0

a= 0 b = -3

Equating values in the formula

[tex]\frac{4-2(0)-(4-2(3^{2} )}{-3-0}[/tex]

[tex]\frac{4+14}{-3}[/tex]

-[tex]\frac{18}{3}[/tex]

-6

The average ROC from -3 to 0 is -6.

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NSWER

C. C = 5/9(F - 32); 59°F =

EXPLANATION

irst, we have to solve the formula for cC. Subtract 32 from both sides,

Then, multiply both sides by 5,

And divide both sides by 9,

Hence, the formula to convert from degrees Fahrenheit to degrees Celsius is C = 5/9(F - 32).

So, 59°F is equal to,

Hence, 59°F is equivalent to 15°C.

Answer:

Explanations:

Dilation is a transformation technique that changes the size of an object in a xy-plane.

From the given figure, there was an enlargement from AJV to A'J'V'. This shows that the scale factor is greater than 1:

Using one of the coordinates V and V'

V = (0, 1)

V' = (0, 4)

Determine the scale factor

Scale factor = V'/V

Scale factor = 4/1

Scale factor = 4

Hence the scale factor of triangle AJV till A'J'V' is 4

hello! it would help if you gave more information so we could better answer the question ^^

The equation of the line that represents Saturn Avenue is; y = 4.

The equation of a line can be ascertained using the formula,

y = mx + c

where m is the line's slope and c is just the y - intercept.

m = vertical change/ horizontal change

m = Δy/Δx

m = (y₂ - y₁)/(x₂ - x₁)

In this question, draw a line through the cleaners as well as perpendicular to Planet Drive.

We can discover the slope of the equation by contemplating two points just on line.

Consider the following points: (8, 4) and (16, 4).

Put the value sin slope.

m = (4 - 4)/(16 - 8)

m = 0/8

m = 0

So we got that,

y - intercept = 4

slope = 0  

Put back the values in equation of line.

y = mx + c

y = (0)x + 4

y = 4

As a result, y = 4 is the equation of the line which represents Saturn Avenue, given that Christopher decides that another road named Saturn Avenue, which will run past this same cleaners and be perpendicular to Planet Drive, is required.

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The point ([tex]-3\frac{1}{2}[/tex], [tex]-1\frac{1}{4}[/tex] ) on the coordinate plane is shown in the figure .

The Coordinate plane can be defined as a 2 D plane formed by the intersection of two line ,

where the horizontal line is called x axis and

the vertical line is called y axis .

In the question ,

the point is given

the point is  ([tex]-3\frac{1}{2}[/tex] , [tex]-1\frac{1}{4}[/tex] )

writing the mixed fraction  in decimal form , we get

x coordinate = [tex]-3\frac{1}{2}[/tex] ⇒ -(3*2+1)/2 = -7/2 = -3.5

y coordinate = [tex]-1\frac{1}{4}[/tex] ⇒ -(1*4+1)/4 = -5/4 = -1.25

So, the point to be plotted on the coordinate plane becomes (-3.5,-1.25)

the points plotted are shown in the figure below .

Therefore , the point ( [tex]-3\frac{1}{2}[/tex], [tex]-1\frac{1}{4}[/tex] ) on the coordinate plane is shown in the figure .

The given question is incomplete , the complete question is

Where is ([tex]-3\frac{1}{2}[/tex] , [tex]-1\frac{1}{4}[/tex]  ) on the coordinate plane?

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[tex]\displaystyle \int -\tan(\theta )\cdot \ln(3\cos(\theta )) ~~ d\theta \\\\[-0.35em] ~\dotfill\\\\ u=\ln(3\cos(\theta ))\implies \cfrac{du}{d\theta }=\cfrac{1}{3\cos(\theta )}\cdot -3\sin(\theta ) \\\\\\ \cfrac{du}{d\theta }=-\tan(\theta )\implies \cfrac{du}{-\tan(\theta )}=d\theta \\\\[-0.35em] ~\dotfill\\\\ \displaystyle \int -\tan(\theta )\cdot u\cdot \cfrac{du}{-\tan(\theta )}\implies \int u\cdot du[/tex]

Answer:

a) 27 b) 5 c) 16 d) 7

Step-by-step explanation:

Answer:

  x = 4

Step-by-step explanation:

You want to know the value of x in the arithmetic sequence x, 2x+4, 5x.

Terms of an arithmetic sequence have a common difference. This means ...

  (2x+4) -x = 5x -(2x+4)

  x +4 = 3x -4 . . . . . . . . . . simplify

  8 = 2x . . . . . . . . add 4-x

  4 = x . . . . . . divide by 2

The value of x is 4.

__

Additional comment

The common difference is x+4 = 8. The sequence is ...

  4, 12, 20, ...

1) given

2) base angles theorem

3) PN=QN

4) [tex]\angle 3=\angle 4[/tex]

5) MP=OQ

7) PQ, QP

8) MQ=PO

9) ASA

The system of linear equations and their solutions are:

1. (51, 26):  x - y = 25; 2x + 3y = 180

2. (-17, -36): x - y = 19; -2x + y/6 = 28

3. (47, 33): 2x - 3y = -5; x + y/11 = 50

4. (-31, -56): 2x - y = -6; x - 305/3 = 2y.

We can solve a system using the substitution method by finding the value of one of the variables, followed by substitution.

1. x - y = 25 -- eqn. 1

2x + 3y = 180 -- eqn. 2

Rewrite eqn. 1:

x = 25 + y

Substitute x = 25 + y into eqn. 2:

2(25 + y) + 3y = 180

50 + 2y + 3y = 180

5y = 180 - 50

5y = 130

y = 26

Substitute y = 26 into eqn. 1:

x - 26 = 25

x = 25 + 26

x = 51

The solution is: (51, 26).

2. x - y = 19 -- eqn. 1

-2x + y/6 = 28 -- eqn. 2

Rewrite eqn. 1:

x - y = 19

x = 19 + y

Substitute x = 19 + y into eqn. 2:

-2(19 + y) + y/6 = 28

-38 - 2y + y/6 = 28

-11y/6 = 28 + 38

-11y/6 = 66

-11y/6 (-6/11)= 66(-6/11)

y = -36

Substitute y = 36 into eqn. 1:

x - y = 19

x - (-36) = 19

x + 36 = 19

x = 19 - 36

x = -17

The solution is: (-17, -36).

3. 2x - 3y = -5 -- eqn. 1

x + y/11 = 50 -- eqn. 2

x + y/11 = 50

x = 50 - y/11

Substitute x = 50 - y/11 into eqn. 1

2(50 - y/11) - 3y = -5

100 - 2y/11 - 3y = -5

-35y/11 = -5 - 100

-35y/11 = -105

-35y/11(-11/35) = -105(-11/35) (multiplication property)

y = 33

Substitute y = 33 into eqn. 2:

x + 33/11 = 50

x + 3 = 50

x + 3 - 3 = 50 - 3

x = 47

The solution is (47, 33).

4. Solving the last one, we will definitely have the solution, (-31, -56).

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The force exerted by the prism on the floor = 450N

Given: height = 3m, volume = 10m³

Pressure = 75 N/m², prism

To find force

Solution:

Volume of prism = Area of base x height

= Аrеа х 3

Area = 18 = 6m²

Now,

Pressure: force / Area ⇒ 75 = force 6

force= 75×6 = 450N.

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The transformation is a reflection across the y-axis (the line x = 0).

On the image we can see two triangles, both are at the same distance of the vertical axis.

We also can notice that the figure is reflected, this is, the longest point of the triangle points to opposite ways.

With this we can conclude that we had some kind of reflection. Particularly, because both triangles are a the same distance of the vertical axis, we can conclude that the reflection was across the line x = 0.

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Answer:

False

Step-by-step explanation:

No data points pass through 2 or more vertical lines