find the gradint of the given line;
y = 4x + 3

y= -8x + 6

4y = 8x +3

y+x=8

y -x = 5

4y + 5x = 30

The fraction of the container that is empty, based on the capacity of the container and the water added, is 12 / 25

The fraction of the container that is empty can be found by the formula:

= (Capacity of container - Amount of water added ) / Capacity of container

Capacity of container = 2.5 liters

Amount of water added = 1 . 3 liters

The fraction of the container which is empty is:

= (2 . 5 - 1.3) / 2.5

= 1.2 / 2.5

= (1 . 2 x 10) / ( 2 . 5 x 10)

= 12 / 25

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Answer:

[tex]6\frac{3}{8}[/tex]

Step-by-step explanation:

to multiply fractions turn them into improper fractions and then multiply numerator by numerator and denominator by denominator

-4 1/4*-1 2/4

-17/4*-6/4

102/16

51/8

6 3/8

Hopes this helps please mark brainliest

Any algebraic expression can be represented graphically. The given problem can be solved as shown in the image attached.

A polynomial in one variable is also an algebraic expression. It can be written in the form aˣn. Here, n is a non-negative integer and a is a real number. The a is also called the coefficient of the term.

The given problem also consists of a polynomial in one variable. It can be solved as such.

We have been told that = y = -3x+7

We need to graph this. For this, we plot at least two values for x and y -

x  = 0 and y = 7

x = 1 and y = 4

We plot both these coordinates on the graph which has been attached below.

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The value of the blocks he used is 80 blocks.

The difference is that expressions, which are essentially mathematical "phrases," do not contain an equal sign. Equations have an equal sign and demonstrate that two mathematical expressions are equivalent. An algebraic equation is 2x + b = 14, but 2x + b is an algebraic expression.

Arithmetic operations are the most fundamental type of mathematical expression. Any combination of numbers and a mathematical operation, such as multiplication, addition, subtraction, or division, are considered arithmetic operations.

Given ,

A)How many blocks has he used?

150-70

= 80

B) 35 - 20

= 15

70/15

= 4

Therefore the value of the blocks he used is 80 blocks

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The slope of the line from the equation is 2/3.

The line:

A line is a straight one-dimensional figure having no thickness and extending infinitely in both directions.

The formula of a line:

y = mx + c

m = slope

c = y-intercept

Here we are provided with the equation:

8x - 12y = 108

12y = 8x - 108

y = 2/3x - 9

So by equating we get the slope:

m = 2/3

Therefore the slope is 2/3.

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If we want to estimate the population mean time for previews at movie theaters with a margin of error of minute, then 56 sample size should be used and if we want to estimate the population mean time for previews at movie theaters with a margin of error of minute, then 22 sample size should be used.

In the given question,

A preliminary sample conducted by the wall street journal showed that the standard deviation of the amount of time devoted to previews was 4 minutes.

(a) We have to estimate the population mean time for previews at movie theaters with a margin of error of seconds, what sample size should be used.

Assuming the confidence interval 98% and margin error of 75 seconds.

We can write 98% as 0.98.

So the value of z at 98% confidence interval using the standard table of z is 2.326.

Standard Deviation= 4 minutes

Converting minutes in seconds so,

Standard Deviation= 4*60

Standard Deviation= 240

Margin of error is 75 seconds.

So the sample size = (Value of z * Standard Deviation)/Margin Error

Sample Size = ((2.326*240)/75)^2

Sample Size = (558.24/75)^2

Sample Size = (7.4432)^2

Sample Size = 55.401

Approx value of Sample Size = 56

Hence, if we want to estimate the population mean time for previews at movie theaters with a margin of error of 75 seconds, then 56 sample size should be used.

(b) We have to estimate if we want to estimate the population mean time for previews at movie theaters with a margin of error of minute, what sample size should be used.

The given margin of error is 75 seconds.

Now converting the error in minute by dividing 60.

Now the margin of error = 75/60=5/6 minute

Standard Deviation= 4 minutes

The confidence interval 98% and margin error of 75 seconds.

We can write 98% as 0.98.

So the sample size = (Value of z * Standard Deviation)/Margin Error

sample size = {(0.98*4)/(5/6)}^2

sample size = {6(0.98*4)/5}^2

sample size = (6*3.92/5)^2

sample size = (23.52/5)^2

sample size = (4.704)^2

sample size = 22.13

Approx value of Sample Size = 22

Hence, if we want to estimate the population mean time for previews at movie theaters with a margin of error of minute, then 22 sample size should be used.

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A spurious correlation is the implied causal relationships between events that are statistically  linked.

Spurious correlation;

A spurious correlation (or spuriousness) in statistics is an apparent causal relationship between two variables. Any reported dependencies between variables are solely the result of chance or are both a result of an unidentified confounder when there is misleading correlation.

When the price of higher education and the cost of living both rise, for instance, this doesn't necessarily indicate a causal link between the two factors because higher education tuition isn't always the result of rising living costs.

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If the rate of change is constant, the volume of the water in the pond by the year 2030 will be 147 gallons.

Define volume.

Any three-dimensional solid's volume is just the amount of space it takes up. It can be any shape like a cube, cuboid, cone, cylinder, etc. Various forms have various volumes. We have studied the several solids and forms that are specified in three dimensions, such as cubes, cuboids, cylinders, cones, etc., in 3D geometry. The SI unit of volume is cubic units.

Solution Explained:

Based on the conditions given in the question, we formulate as follows

(612 X (2024 - 2020) + (612 - 798) X (2030 - 2020) / (2024-2020)

= (612 X 4 - 186 X 10) / 4
= (2448 - 1860) / 4
= 588 / 4
= 147

Therefore, by 2030 the volume of the water in the pond will be 147 gallons.

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Answer:

Step-by-step explanation:

32

Answer:

The answer is 923.6111 because 166430÷180 is 923.6111

The sides of the triangle are 17, 19 and 21 and 19 is middle of the three side lengths.

What are triangles?

Let the side of triangle = x

x-2, x, x+2 are the three sides and their sum is 3x.  

3x = 57

 x = 57/3

 x = 19.

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Answer:Consumidores primarios: comen a los productores. Consumidores secundarios: comen a los primarios. Consumidores terciarios: comen a los carnívoros. Descomponedores: se alimentan de restos de seres vivos.

Step-by-step explanation:Consumidores primarios: comen a los productores. Consumidores secundarios: comen a los primarios. Consumidores terciarios: comen a los carnívoros. Descomponedores: se alimentan de restos de seres vivos.

Hello..!

¿What is consumidores primarios?

They are the ones that eat plants. They are herbivores or are parasites of these.

The multiplication of the quotient and the fraction is 1 (2/5).

A fraction is a part of the whole represented by a/b, where a and b are any integers.

The given expression is (1/5) × 7.

Perform the multiplication:

(1/5) × 7

= 7/5

= 1 (2/5)

Hence, the multiplication of the quotient and the fraction is 1 (2/5).

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Answer:thhe one on top good

Step-by-step explanation:

The equation that represents the altitude h of the balloon over time.

h = 1500t.

Option B is the correct answer.

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

Example:

2x + 4 = 5 is an equation.

3x + 5x = 5 is an equation.

We have,

A hot air balloon rises 1,500 feet in 25 minutes.

This means,

25 minutes = 1,500 feet

h = altitude

The equation that represents the altitude h of the balloon over time.

h = 1500t.

Thus,

The equation that represents the altitude h of the balloon over time.

h = 1500t.

Option B is the correct answer.

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Answer:

Equation: 3x - 4 = 6 - 2x

Solution: x = 2

Step-by-step explanation:

Look at the key.

Left side of the equal sign:

A grey rectangle means x.

There are 3 grey rectangles on the left side, so that is 3x.

A white square means -1.

There are 4 white squares on the left side, so that means -4.

Altogether, the left side is 3x - 4.

Right side of the equal sign:

A black square means 1.

There are 6 black squares, so that means 6.

A white rectangle means -x.

There are 2 white rectangles, so that means -2x.

Altogether, the right side is 6 - 2x.

Put both sides together, and you have

3x - 4 = 6 - 2x

Solve the equation:

Add 2x to both sides.

5x - 4 = 6

Add 4 to both sides.

5x = 10

Divide both sides by 5.

x = 2

Answer:

Equation: 3x - 4 = 6 - 2x

Solution: x = 2

The cost for Enrique's ad which he wants to run for 3 weeks is $207

Given,

Number of lines in Enrique's ad = 6 lines

Charge for first two lines of ad = $42

Charge for extra lines after 2 lines = $6.75 each

The above given charges are for one week.

We have to find the cost for Enrique's ad which he wants to run for 3 weeks;

Here,

Total charge for Enrique's ad = 42 + (4 x 6.75) = 42 + 27 = 69

Enrique's 6 line ad charges $69 for a week

Now,

Charge of ad for 3 weeks = 69 x 3 = 207

That is,

The cost for Enrique's ad which he wants to run for 3 weeks is $207

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The absolute value of 4 by 3 would be 3.33

What is the absolute value?

The absolute value or modulus of a real number x denoted |x| in mathematics, is the non-negative value of x regardless of its sign.

We have to find the absolute value of 4/3.

So |4/3| = |3.33|

             = 3.33

Hence, the absolute value of 4 by 3 would be 3.33

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0.86 of the exam scores are between 68 and 77.99 points

Since the set of computer science exam scores are normally distributed, we would apply the formula for normal distribution which is expressed as

z = (x-μ)/σ

Where

X = computer science exam scores.

μ = mean score

σ = standard deviation

From the information given,

μ = 71.33 points

σ = 333 points

We want to find the proportion of the exam scores are between 68 and 77.99 points. It is expressed as

P(68 < x ≤ 77.99)

For x = 68,

z = (68 - 71.331)/333 = - 0.01

Looking at the normal distribution table, the probability corresponding to the z score is -0.01

For x = 68,

z = (77.99 - 71.33)/333 = 0.25

Looking at the normal distribution table, the probability corresponding to the z score is 0.25

P(68 < x ≤ 77.99) = 0.25 + 0.01 = 0.26

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The formula to find the length l of a baking sheet that has an area of 117 square units is l = 117/w.

According to the question,

We have the following information:

Formula to find area = lw

Now, l is the length of a baking sheet.

Area of a baking sheet = 117 square units

So, we have the following expression:

lw = 117

Now, in order to find the value of l, we will divide both sides by w:

l = 117/w units

Hence, the formula to find the length l of a baking sheet that has an area of 117 square units is l = 117/w.

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The standard deviation is 70 %.

acc to our question=

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The value of the expression 2b plus 4a minus a minus 2 plus 12b is 3a + 14b - 2.

Expression:

An expression is defined as the a combination of operators, constants and variables. And it may consist of one or more operands, and zero or more operators to produce a value.

Given,

Here we have the statement "2b plus 4a minus a minus 2 plus 12b".

Now, we have to find the simplified form of this statement.

In order to find the simplified form,

First we have to convert the statement into expression form, then we get

2b plus 4a minus a minus 2 plus 12b = 2b + 4a - a - 2 + 12b

Now, we have to combine the like terms, then we get,

=> (2b + 12b) + (4a - a) - 2

Perform the appropriate arithmetic operations, then we get the simplified form of the expression as,

=> 14b + 3a - 2

Now, we have to arrange them in order then we get,

=> 3a + 14b - 2

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Answer:

Step-by-step explanation:

Domain is the input

Range is the output

Function is the equation that is set up by the given information

1)

Domain   2 to 8

Range   1 to 6

Yes, this is a function

2)

Domain  2 to 3

Range  7 to 13

No, this is not a function , b/c functions need a 1 to 1 correspondence

3)

Domain  0 to 4

Range   -1 to 5

No, this is not a function , b/c functions need a 1 to 1 correspondence

n = -0.5714

Step-by-step explanation:

[tex]{ \tt{1.8n + 0.2 = 3.2n + 1}}[/tex]

[tex]{ \tt{1.8n = 3.2n + 1 - 0.2}}[/tex]

[tex]{ \tt{1.8n = 3.2n + 0.8}}[/tex]

[tex]{ \tt{1.8n - 3.2n = 0.8}}[/tex]

[tex] { \tt{ - 1.4n = 0.8}}[/tex]

Divide both sides by -1.4 then,

[tex]{ \tt{ \frac{ - 1.4}{ - 1.4}n = - \frac{ 0.8}{1.4}}} [/tex]

Let us convert 0.8 to 8 and 1.4 to 14 by shifting the points. Then,

[tex]{ \tt{n = - \frac{8}{14}}} [/tex]

[tex]{ \tt{n = - \frac{4}{7}}} [/tex]

[tex]{ \blue{ \boxed{ \green{\sf{n = -0.571428571}}}}} [/tex]

Andre made a mistake after getting 14x=8x. He divided each side by x, but this is not valid since x may be 0 and dividing by 0 gives an undefined result.

Andre should have collected the like terms in order to have all the variables x on one side before taking the difference.

Inequality expression

Given the inequality expression solved by andre expressed as:

14x + 3 ≤ 8x + 3

Simplify to have:

14x - 8x ≤ 3-3

6x ≤ 0

x ≤ 0

Hence andre should have collected the like terms in order to have all the variables x on one side before taking the difference.

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Based on the box plot, the number of students that gained more than 48 marks is 80 students.

In Mathematics, the five-number summary of any box and whisker plot include the following:

By critically observing the box and whisker plots which represent the scores of students in a test, we can reasonably and logically deduce that the third quartile (75%) is 70 and the median score is 48. Therefore, we would calculate the total number of students as follows:

Total number of students = 75/100 × T

120 = 0.75T

T = 120/0.75

T = 160 students.

From the median score of 48, the number of students that gained more than 48 marks is given by:

Students = 50/100 × 160

Students = 50/100 × 160

Students = 80 students.

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Answer:

f(x) = 1/2x + 3

Answer:

3/2

Step-by-step explanation:

(y2-y1)/(x2-x1)

(-1-2)/(-4+2)

-3/-2

the slope of the line is 3/2

x + y ≤ -4 and 3x + 2y ≤ -5

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

Explanation:

The given point has coordinates of x = 3 and y = -7.

Let's plug those coordinates into the first inequality of choice A.

x+y < -4

3 + (-7) < -4

-4 < -4

The last statement is false. A number cannot be smaller than itself.

Since the last inequality is false, it causes the first to be false for those x,y values. Therefore, we rule out choice A.

--------------

We'll do the same idea for the first inequality in choice B

x + y ≤ -4

3 + (-7) ≤ -4

-4 ≤ -4

This time we get a true statement at the end. The key difference is the "or equal to" portion.

Let's check the other inequality of choice B

3x + 2y < -5

3(3) + 2(-7) < -5

9 - 14 < -5

-5 < -5

We run into a similar issue as we did with choice A. We have no choice but to cross choice B off the list as well.

--------------

Choice C is eliminated for the same reason choice A was.

Choice D is the final answer because both inequalities involve "or equal to". So the -5 < -5 is now -5  ≤ -5 which is true.

It turns out that (3, -7) is on the boundary of each shaded region. It's at the intersection of the two boundary lines x+y = -4 and 3x+2y = -5.

D. x + y ≤ -4

3x + 2y ≤ -5

To see if (3, -7) satisfies both inequalities.

x + y ≤ -4:

Substitute x = 3 and y = -7 into the first inequality:

3 + (-7) ≤ -4

-4 ≤ -4

Since -4 is less than or equal to -4, the first inequality is true for the point (3, -7).

3x + 2y ≤ -5:

Substitute x = 3 and y = -7 into the second inequality:

3(3) + 2(-7) ≤ -5

9 - 14 ≤ -5

-5 ≤ -5

Since -5 is equal to -5, the second inequality is also true for the point (3, -7).

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