i need help cuz im poopy dooky at math

Answer:

ANSWER FOR QUESTION 7

X=1,Y=1

Step-by-step explanation:

2x+3y=5.

4x-y=3.

In this question, we simply find the value of y from equation 2 because by doing this there will be no term in the denominator so it quiet be easy for us.

y= -3+4x(4x-3) put in eq 1

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

2x+12x-9=5

14x=14

divide 14 into both sides

x=1.

put in eq 1 or eq 2 to find the value of y Answer will be the same.

let's put in eq 1

2(1)+3y=5

3y=3

divide 3 into both sides

y=1.

Same for question 8 and 9.

The probability that a randomly chosen student is studying a language other than English is 0.43.

The probability that a randomly chosen student is studying french, german, or Spanish is 0.4.

This is a legitimate probability model since the random variable as well as the probability distribution function otherwise known as pdf has been provided in the question.

From the question, we can obtain the pdf as follows;

    Language:  Spanish   French   German   All others   None

    Probability:  0.30         0.08        0.02         0.03         0.57

The probability that a randomly chosen student is studying a language other than English is 1 - 0.57 = 0.43.

The probability that a randomly chosen student is studying french, german, or Spanish is the sum of the individual probabilities of french german, and Spanish which is equal to

0.30 + 0.08 + 0.02 = 0.4.

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The distance between the two parallel lines is 26 units

Parallel lines are lines that do not meet or intersect.

If y = mx +c as the equation of a straight line

For the line y = -5x

comparing with the standard equation of a line,

y = -5x has no y-intercept, so the coordinates of the point is (0,0)

For the second line y = -5x + 26

comparing with the standard equation

The y-intercept is 26, which means the coordinates of the point is (0, 26)

The distance between these two points is the distance between the two lines.

Formula for distance between two point,

D = [tex]\sqrt{(y_{2} -y_{1}) ^{2} + (x_{2} - x_{1}) ^{2} }[/tex]

D = [tex]\sqrt{(26-0)^{2} + (0-0)^{2} }[/tex]

D = 26 units

In conclusion, the distance between the two parallel lines is 26 units

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The radical expression 10√6 ÷ 2√2 has a value of 5√3, when evaluated

The expression is given as

10√6 ÷ 2√2

The above expression is a radical expression

So, we have

(10√6 ÷ 2√2) = (10 ÷ 2) x (√6 ÷ √2)

Evaluate the quotient of 10 and 2

So, we have

(10√6 ÷ 2√2) = 5 x (√6 ÷ √2)

Rewrite the expression as

(10√6 ÷ 2√2) = 5 x √(6 ÷ 2)

Evaluate the quotient of 6 and 2

(10√6 ÷ 2√2) = 5 x √3

This gives

(10√6 ÷ 2√2) = 5√3

Hence, the value of the expression is 5√3

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LCM of 15 and 35 = 105

3x5x7 = 105

Answer:

3x5x7

The coordinates of the point's image (1,-4) under the same translation are (2, 0)

Therefore,

The coordinates of the point's image (1,-4) under the same translation are (2, 0)

The x coordinate increased by 1, and the y coordinate increased by 4.

Now, do these same transformations to the other point, (1, -4)

x coordinate: 1 + 1 = 2

y coordinate: -4 + 4 = 0

So, the new point is (2, 0)

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[tex]\sqrt{2}[/tex] units

The line segment formed by  joining (-3, 4) and (-2, 3) , the distance of line segment is  [tex]\sqrt{2}[/tex] units

                      D = [tex]\sqrt{(x2 - x1)^{2} + (y2 - y1)^{2} }[/tex]

Given two points , (-3 , 4) and (-2 , 3)

to find the distance formula is ,

         distance = [tex]\sqrt{(x2 - x1)^{2} + (y2 - y1)^{2} }[/tex]

   by substituting the values,

            d = [tex]\sqrt{(-2 - (-3)^{2} + (3 - 4)^{2} }[/tex]

            d = [tex]\sqrt{(-2 + 3)^{2} + (-1)^{2} }[/tex]

            d = [tex]\sqrt{1^{2} + (-1)^{2} }[/tex]

            d = [tex]\sqrt{2}[/tex] units.

So the distance of line segment formed by joining (-3, 4) and (-2, 3) is

[tex]\sqrt{2}[/tex] units.

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[tex]x = \frac{5 +\sqrt{109} }{2} \text{ or }\\\\ x = \frac{5-\sqrt{109} }{2}[/tex]

How to find x?

4 x + 2 + x =  ___ x – 19

⇒ 4 x + 2 + x =  x(x) – 19

⇒ 5x+ 2  = [tex]x^{2}[/tex] - 19

⇒ 5x +2 - [tex]x^{2}[/tex] + 19 = 0

⇒ 5x - [tex]x^{2}[/tex] + 21 =0

⇒ -[tex]x^{2}[/tex] + 5x + 21 = 0

    [tex]x^{2}[/tex] - 5x - 21 = 0   ----(1)

(1) is of the form [tex]ax^{2} +bx+c=0[/tex]

In (1)  a = 1, b = - 5 , c = -21

Applying quadratic formula,

[tex]x = \frac{-b\pm\sqrt{b^{2} -4ac } }{2a} \\\\x = \frac{-(-5)\pm\sqrt{(-5)^{2} -4(-21)} }{2(1)} \\\\x = \frac{(5)\pm\sqrt{25 +84} }{2}\\\\x = \frac{5\pm\sqrt{109} }{2}\\\\x = \frac{5 +\sqrt{109} }{2} \text{ or } \frac{5-\sqrt{109} }{2}[/tex]

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The inequality to solve is:

Whenever we have absolute value inequality, we solve it in:

Now, solving it:

The quadratic quadratic equation represented in the graph has the equation  y = 2x² + 7x + 4 .

The values of x that satisfy the equation are the roots or zeros of the expressions on the left side of the equation. In a quadratic problem, there can only be two possible solutions.

The graph of the function which is quadratic can be represented by the equation in the standard form of

y=ax²+bx+c

The graph passes through the points (-4,0) , (-0.5,0) and (0,4)

Putting the values in the equation we get:

0 = 16a - 4b + c

4 = c

0 = 0.25 a +0.5b + c

Solving the equations we get :

16 a - 4 b = -4

0.25a -0.5 b = -4

a =2 and b = 7

The required quadratic equation is  y = 2x² + 7x + 4

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Answer:

Step-by-step explanation:

Let's analyze the graph.

We observe that:

Based on our observations, the least degree polynomial function will have the form of:

To find the value of a we'll use the y-intercept:

Let's prove it with local maximum:

So the function is:

Answer:

It should be 1. If y(x)= 4 then x should equal 1. This way we get 4=4 which is true.

Step-by-step explanation:

4x1 = 4, so if you substitute 1 for x in your equation you get 4.

hello

the answer to this question is false

Answer:

The answer is 0

Step-by-step explanation:

-57 cancels out 57 making it 0.

Answer:

C: x = 13

Step-by-step explanation:

It looks like the question is f(x) = sqrt(x - 11)

DOMAIN

The domain of a function refers to values of x that the function can graph and give a definite y value for. Functions can graph x values that do not result in undefined or complex numbers.

If that is the case then x would have to be greater than or equal to 11 because you can not get the square root of negative numbers unless you want to deal with complex numbers.

13 - 11 >= 0 so it is the answer.

Answer: The value of f (1) is -6

Step-by-step explanation:

Substitute the 1 into the equation: f (1) = -(1)2 - 4

f (1) = -2 - 4

f (1) = -6

Answer:

The angle measures are

x + (x + 30) + 2x = 180

x = 37.5

Step-by-step explanation:

x + (x + 30) + 2x = 180.  (combine x and 2x)

3x + (x + 30) = 180.  (combine 3x and x, 30 cant combine)

4x + 30 = 180.  (subtract 30 from both)

4x = 150.  (divide both sides by 4)

x = 37.5

Answer:

The discriminant of the quadratic formula is given by

[tex] {b}^{2} - 4ac[/tex]

Answer:

11 to 20

Step-by-step explanation:

first you get the number 11

second you add 11 and 9 which equals 20

third you make it a ratio which is 11:20 or (11 to 20) and that's your final answer.

From the blue pre-image to the pink image. The transformation that occured is

(a) Reflection (x,y) → (x, -y)

Define reflection.

A flip is a term for a reflection in geometry. The shape is mirrored in a reflection. The line of reflection is a line through which an image will reflect. Every point in a figure is said to reflect the other figure if and only if it is equally spaced from every corresponding point in the other figure.

A line of reflection is required to perform a geometry reflection; the resulting orientation of the two figures is the opposite. The figures' corresponding parts are spaced at the same distance apart from the reflection axis. Ordered pair rules are reflected along the x-axis at (x, -y), the y-axis at (-x, y), and the line at y=x.

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Before the launching its latest line of health drinks, a beverage manufacturer provided free samples of the health drinks to a large and culturally diverse set of families. This is a qualitative research.

Qualitative research is the study of the nature of phenomena and is particularly effective for clarifying why something is (or is not) seen, assessing complicated multi-component interventions, and focusing on intervention improvement.

Data from first-hand observation, interviews, questionnaires, focus groups, participant-observation, recordings recorded in natural settings, documents, case studies, and artifacts are used in qualitative research. The information is mostly non-numerical.

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Answer:

the answer is 93,721

    Two or more algebraic equations that share variables, such as x and y, are said to be simultaneous equations. Since the equations are solved simultaneously, they are known as simultaneous equations. These equations alone could have an endless number of solutions.

Eq. 1: 20c + 10l = 320

Equation 2: c - l = 10

where x = total hours Caleb puts in y hours of work. Landon has a job

The total number of shirts that Caleb and Landon iron in an hour depends on how many hours each of them works overall.

The total number of shirts they can both iron is equal to the product of the number of shirts Caleb can iron in an hour and the number of hours he worked (shirts that Landon can iron in an hour x number of hours Landon worked)

Eq. 1: 20c + 10l = 320

Equations 1 and 2 must be solved jointly because they are simultaneous equations, and doing so will yield the solution.

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The best way to find the distance between the points (2,-1) and (6,6) is by using the distance formula.

The distance between the two points (2,-1) and (6,6) is 8.062 units (approximately).

Distance formula

The distance formula, is the algebraic expression that gives the distances between pairs of points in their coordinates.

The distance between two points [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex]  is given by:-

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

It is derived from the Pythagoras theorem.

We have,

[tex](x_1,y_1)[/tex] = (2,-1)

[tex](x_2,y_2)[/tex] = (6,6)

We have to find the distance between the two points (2,-1) and (6,6).

Hence, distance between the two points  (2,-1) and (6,6) is given by:-

[tex]\sqrt{(6-2)^2+(6-(-1))^2}=\sqrt{4^2+7^2}=\sqrt{16+49}=\sqrt{65}[/tex] ≈ 8.062 units.

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Answer: 5.50 (c + a)

Step-by-step explanation:

Answer:

938.4 normal time

Step-by-step explanation:

13.8 times 68.also what is overtime pay that no answer

Answer: $20.7 per hour of overtime

$1131.6 gross pay for the week

Step-by-step explanation: traditional overtime pay is 1.5 times regular pay meaning that she earns 13.8•1.5 for her overtime

multiply 13.8 times her regular 40 hour work week plus 28 hours of overtime pay

(13.8•40)+(13.8•1.5)•(hours of overtime)=gross pay

this is all subjective depending on your states overtime laws and if they count overtime as double for hours worked in excess of 48 hours in a week.

I would look at your states overtime laws and work on a conclusion.

if this is the case then the answer would be

(13.8•40)+(20.7•8)+(27.6•20)=gross pay

The volume of the water in the pool decreases by 7200 gallons an hour, considering the slope of the linear function.

The slope-intercept representation of a linear function is given as follows:

y = mx + b

The coefficients of the function are described as follows:

From the given graph, two points are given as follows:

(2,8640) and (4,7200).

Given two points, the slope is given by change in y divided by change in x, hence:

m = (7200 - 8640)/(4 - 2) = -720 gallons an hour.

The graph of the function is given by the image at the end of the answer.

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Answer:

That would be a 30% profit. 

Step-by-step explanation: