Help please i can’t do the math right I’m not getting any of those 4 options right

Answer:

True

Step-by-step explanation:

The point [tex](0,3)[/tex] lies on the graph.

The slope of the equation 3x+20=-4 is 8.

How may mathematical expressions be made simpler?

Mathematical operations may be made more simpler by using the right order of operations. Exponents, words in parentheses, multiplication, division, addition, and ultimately subtraction are the right order of operations. PEMDAS is a helpful acronym that you may use to remember this.

1. Subtract 20 from both sides

[tex]\begin{aligned}& 3 x+20=-4 \\& 3 x+20-20=-4-20\end{aligned}[/tex]

2. Simplify

Subtract the numbers

3 x=-24

3. Divide both sides by the same factor

[tex]\begin{aligned}& 3 x=-24 \\& \frac{3 x}{3}=\frac{-24}{3}\end{aligned}[/tex]

4 Simplify

Cancel terms that are in both the numerator and denominator

Divide the numbers

x=-8

Y = mx + b, where m is the slope and b is the y-intercept, is the slope equation utilising the equation of a line.

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Answer:

Zhi's Expression:

18: The total number of tickets

3: The number of tickets required for each game

g: The number of games played

Diego's Expression:

3: The number of tickets required for each game

(6 - g): The total number of tickets minus the number of games played

Step-by-step explanation:

Therefore ,0.62097 % proportions  of students scored at least 27 points on this test

The Z-score provides information on how far a given value deviates from the standard deviation. The Z-score, also known as the standard score, indicates how many standard deviations above or below the mean a specific data point falls. The level of variability within a particular data collection is effectively reflected in the standard deviation.

Here,

z = (x - μ)/σ

here ,raw score =x ,standard deviation=σ   and mean= μ  

μ = 22, σ = 2

For x > 27:

z = (27 - 22)/2 = 1

P(z > 1) = 1 - P(z < 1) = 1 -  0.99379  =  0.0062097

Therefore , 0.62097 % of students scored at least 27 points on this test

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Integer values of x in the interval [-4, 2] that satisfy the following Inequality: 4x + 5 < -6 are -4 and -3.

In mathematics, inequalities specify the connection between two non-equal numbers. Equal does not imply inequality. Typically, we use the "not equal sign (≠)" to indicate that two values are not equal. But several inequalities are utilized to compare the numbers, whether it is less than or higher than.

A sign of inequality can be used to show that one of the two variables is larger than, more than or equal to, less than, or equal to another value.

Income gap, gender inequality, access to health care, and social class are some of the most prominent instances of social inequality.

Given the inequality:

4x + 5 < -6

Therefore the all values of x which satisfy the given inequality on the interval [-4,2].

So, x= -4 and x= -3

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Answer: C

Step-by-step explanation:

Slope is rise over run. Let's start at (0,0) and we want to see when the line hits another point, which can be (2,1.5). We count that starting from 0, the point goes up by 3 and then runs by 4. Therefore, the answer is 3/4, which is C.

The maximum number changes of direction (turning points) = 3

What is Direction?

The direction of an object's motion or tendency is indicated by its direction.

The main directions are East, South, West, and North.

Concept:

Not every cubic function has a definite turning point. but their are 3 turning point and depends upon the type of the cube

The first derivative of the function becomes zero and the second derivative might either be positive or negative at a turning point of the function.

The function would not have a turning point if the set of real numbers containing the roots of the first derivative of the function included none.

The point would not be a turning point but an inflexion point of the curve if the function has a root in the set of real numbers but its second derivative is zero at that location. Additionally, such a process would not have a turning point.

Think about the equation f(x)=x3. There isn't a turning point in this function. Rather, it has an inflection point at x=3.

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A reflection across the x-axis and horizontal shift right 10 units are transformations that can be applied.

Transform the shapes on a coordinate plane by rotating, reflecting, or translating them. Felix Klein introduced transformational geometry, a fresh viewpoint on geometry, in the 19th century. In geometry, object transformations constitute the foundation for the majority of proofs. Transformations allow us to change any image in a coordinate plane. The rules of transformations can be utilised to better understand the images used in video games. Any operation, or a combination of operations, such as translation, rotation, reflection, and dilation, can be used in this transformation.

Given

Transformations that apply,

A reflection across the x-axis

A horizontal shift right 10 units

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The transformations that took for mapping ΔA onto ΔB are:

a) Translated the triangle A 2 units to the right,

b) Reflected the ΔA' (translated A) over the y-axis,

c) Reflected the ΔA'' (reflected A) over the x-axis, resulting in ΔB.

The transformation rules are:

a) Translation: (x, y) ⇒ (x + 2, y) (In the right side direction)

b) Reflection over the y-axis: (x, y) ⇒ (-x, y)

c) Reflection over the x-axis: (x, y) ⇒ (x, -y)

The given vertices of triangle A are: (-2, 3), (-5, 3), and (-5, 5).

a) Applying translation by 2 units to the right to triangle A:

(-2, 3) → (-2 + 2, 3) → (0, 3)

(-5, 3) → (-5 + 2, 3) → (-3, 3)

(-5, 5) → (-5 + 2, 5) → (-3, 5)

So, triangle A is translated to triangle A'.

b) Applying reflection over the y-axis to the triangle A':

(0, 3) → (0, 3)

(-3, 3) → (3, 3)

(-3, 5) → (3, 5)

So, triangle A' is reflected as triangle A''.

c) Applying reflection over the x-axis to triangle A'':

(0, 3) → (0, -3)

(3, 3) → (3, -3)

(3, 5) → (3, -5)

Thus, the formed triangle is B at the vertices (0, -3), (3, -3), and (3, -5).

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Answer:

All Real Numbers

Step-by-step explanation:

I assume you are solving for x.
The Interval Notation would be: (-∞,∞)

Answer:12

Step-by-step explanation:

270/3=90, this is the amount it costs for 1 person to go

1080/90=12

12 people can go for $1080

An angle is outside a circle if its vertex is outside the circle and its sides are tangents or secants. Here the angle is formed by two tangents,

The value of x is 80°.

The tangent is defined as a line touching circles or an ellipse at only one point. Suppose a line touches the curve at P, then the point “P” is called the point of tangency.

As we know that the complete angle of the circle is 360°

The answer for x° is 360° - 260° = 100°

⇒ 260°- 100° = 160° now,

⇒ 160°/2 = 80°

∴ x = 80°

Hence, for the given two tangents formed the answer for x° = 80°

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Answer: E

Step-by-step explanation:

Answer:

volume of cube= l^ 3

=(4x)^3

=64x^3 cubic units

Answer:

Step-by-step explanation: To solve the problem, we can use the given information to set up a system of equations and solve for the values of $x$ and $y$. Specifically, we are given that one number is 4 less than 3 times a second number, and that two times the first number decreased by two times the second is 8.

Let $x$ represent the larger number, and $y$ represent the second number. We can write the given information as a system of equations as follows:

x &= 3y - 4

2x - 2y &= 8

Solving this system of equations, we find that $x = 12$ and $y = 2$. Therefore, the value of the larger number is 12

Age, BMI, creatinine, and the amount of time between conception and death are a few examples of quantitative characteristics.

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Answer:

6. Scalene, No congruent sides

7. Isosceles, 2 congruent sides

8. Equilateral, All congruent sides

Answer:

2xy + 3x + 6y + 9

Step-by-step explanation:

2y times x = 2xy

3 times x = 3x

2y times 3 = 6y

3 times 3 = 9

a. 4(x - 5)^2

= 4 * (x - 5)^2

= 4 * ((x - 5) * (x - 5))

= 4x^2 - 40x + 100

b. 3(x + 1) (2x - 9)

= (3(x + 1)) (2x + −9)

= (3(x + 1))(2x) + (3(x + 1))(−9)

= 6x^2 + 6x − 27x − 27

= 6x^2 − 21x − 27

c. -2(4x + 2)^2

= -2 * (4x + 2)^2

= −2 * ((4x + 2) * (4x + 2))

= 32x^2 − 32x − 8

or d. -2(4x + 2)^2 - 5 (with subtracting 5)

= −32x^2 + −32x + −8 + −5

= (−32x^2) + (−32x) + (−8 + −5)

= −32x^2 + −32x + −13

d. -3(5x - 2)^2 + 5 (with negative)

= 75x^2 + −60x + 12 + 5

= 75x^2 + −60x + 12 + 5

= (75x^2) + (−60x) + (12 + 5)

= 75x^2 + −60x + 17

or d. 3(5x - 2^2 + 5 (without negative)

= (3)(5x + −4 + 5)

= (3)(5x) + (3)(−4) + (3)(5)

= 15x − 12 + 15

= 15x + 3

The equation Sharon can use to find c, the average amount the cable company charges per channel is 300(c - 0.20) = 180.

The cable company charges an average of $0.80 per channel.

An equation involves two expressions or statement on two sides connected with an equal sign.

Total number of channels = 300

Let c be the cable company charges per channel.

Then the charge satellite company charges per channel = c - 0.20

Monthly charge of satellite company = 300(c - 0.20)

Monthly satellite bill = $180

So,  300(c - 0.20) = $180

⇒ c - 0.20 = 180/300

⇒ c - 0.20 = 0.60

⇒ c = 0.60 + 0.20

⇒ c = 0.80

Hence the equation used to find the cable company charge per channel is 300(c - 0.20) = 180 and the cable company charge per channel is $0.80.

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Answer:

i think that answer is correct

Step-by-step explanation:

Answer:

Step-by-step explanation:

The range of the square footage values for the given mean , standard deviation and  95% confidence interval is equal to (1257.26 , 508.74).

As given in the question,

Sample size 'n' = 2

Sample mean '[tex]\bar{x}[/tex]' = 883 sq ft

Standard deviation 'σ' = 270 sq ft

95% confidence interval.

95% confidence interval = 1 - 0.95

                                        = 0.05

Critical value for 95% is [tex]Z_{0.05}[/tex] = 1.96

Population mean for the given confidence interval is given by :

= [tex]\bar{x}[/tex] ± [tex]Z_{0.05}[/tex] (σ / √n)

= 883 ± 1.96 ( 270 / √2)

= 883 ± 374.26

= ( 1257.26 , 508.74 )

Therefore , the range of the square footage values for the 95% confidence interval is equal to ( 1257.26 , 508.74 ).

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The number of petals that the flower should have is of:

8 petals.

A figure has rotational symmetry when it can be rotated by an angle measure which is greater than 0º and less than 360º and the rotated image is equals to the original figure, that is, the image is equals to the pre-image.

In this problem, we want the flower to have a rotation symmetry of 45 degrees.

The total angle measure of the flower is given as follows:

360º.

Then the number of petals needed for the flower to have a rotational symmetry of 45º is calculated as follows:

360/n = 45.

Applying cross multiplication, we have that:

45n = 360

n = 360/45

n = 8 petals.

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The coordinate location of the hill halfway between them is  (1, -1).

Jack's house is located at the point (-2, 3) and Jill's house is located at the point (4, -5).  They plan to meet up at the hill located halfway between there two houses.

The coordinate location of the hill can be calculated as follows:

using mid point formula,

(x, y) = (x₁ + x₂ / 2, y₁ + y₂ / 2)

using the end points (-2, 3) and (4, -5)

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

(x, y) = (2 / 2. -2 / 2)

(x, y) = (1, -1)

Therefore, the coordinate location of the hill is (1, -1).

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Answer:

-5/3

Step-by-step explanation:

m=(y2-y1)/(x2-x1)  ==> (x1, y1), (x2, y2) are the coordinates and

                                   m is the slope

  (x1, y1), (x2, y2)  ==> (x1=-4, y1=7), (x2=5, y2=-8)

m=(-8-7)/(5-(-4))  ==> plug in known values

m=(-15)/(5+4)  ==> simplify

m=-15/9

m=-5/3

The equations found for the number of tickets sold when 22 tickets are sold on Monday and 30 per day after are sold by Madelyn, and 53 tickets are sold on Monday and 20 per day after that are;

Tickets sold by Madelyn is; y = 22 + 30·x

Tickets sold by Kaia is; y = 53 + 20·x

A system of equation obtained from the details in the question can be presented as follows

y = 22 + 30·x...(1)

y = 53 + 20·x...(2)

The appropriate method for solving the system is to equate equivalent values of one of the variable obtained from each equation in the system.

The solution of the system of equation is; x = 3.1, which indicates that it takes about 3.1 days for the number of tickets sold by Madelyn and Kaia to be equivalent.

An equation consists of two expressions that are joined by the 'equals to' (=) sign.

The number of tickets for the Winter Dance Madelyn sold = 22

Number of tickets per day Madelyn sold after that = 30 per day

Number of tickets Kaia sold on Monday = 53

Number of tickets per day Kaia sold after that = 20 per day

Let x represent the number of days since Monday, and let y represent the number of tickets sold

Therefore;

The number of tickets Madelyn sold, y = 22 + 30·x

The number of tickets Kaia sold, y = 53 + 20·x

The system of equations from the specified information is the equation for the number of tickets Madelyn sold and the number of tickets Kaia sold combined, which can be presented as follows;

y = 22 + 30·x...(1)

y = 53 + 20·x...(2)

The method of solving the equations is by plugging in the value of y from equation (1) in equation (2), as follows;
22 + 30·x = 53 + 20·x

30·x - 20·x = 53 - 22 = 31

10·x = 31

x = 31 ÷ 10 = 3.1

The meaning of the solution of the system of equation, x = 3.1, is that the number of days for the number of tickets sold by Madelyn and Kaia to be the same is about 3 days

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a. Harold's monthly payment is given as follows: $164.13.

b. The total amount paid is given as follows: $9,847.8.

c. The finance charge is of: $847.8.

The monthly payment formula is defined as follows:

[tex]A = P\frac{\frac{r}{12}\left(1 + \frac{r}{12}\right)^n}{\left(1 + \frac{r}{12}\right)^n - 1}[/tex]

In which the parameters are listed as follows:

The values of these parameters for this problem are given as follows:

P = 9000, r = 0.036, n = 5 \times 12 = 60.

Then:

r/12 = 0.036/12 = 0.003.

Then the monthly payment is calculated as follows:

[tex]A = P\frac{\frac{r}{12}\left(1 + \frac{r}{12}\right)^n}{\left(1 + \frac{r}{12}\right)^n - 1}[/tex]

[tex]A = 9000\frac{(0.003)(1.003)^{60}}{(1.003)^{60} - 1}[/tex]

A = $164.13.

Then the total amount paid is of:

Total = 60 x 164.13 = $9,847.8.

Meaning that the finance charge is given as follows:

9847.8 - 9000 = $847.8.

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Yes , the triangles ΔSTU and ΔSRQ are similar triangles

What are similar triangles?

If two triangles' corresponding angles are congruent and their corresponding sides are proportional, they are said to be similar triangles. In other words, similar triangles have the same shape but may or may not be the same size. The triangles are congruent if their corresponding sides are also of identical length.

Corresponding sides of similar triangles are in the same ratio. The ratio of area of similar triangles is the same as the ratio of the square of any pair of their corresponding sides

Given data ,

Let the first triangle be ΔSTU

Let the second triangle be ΔSRQ

Now , for the triangles to be similar , the corresponding sides of the triangles should be in the ratio

So , on simplifying , we get

The measure of side ST = 21

The measure of side SU = 35

The measure of side SQ = 6

The measure of side SR = 10

Now , for similar triangles ,

ST / SQ = SU / SR

Substituting the values in the equation , we get

21 / 6 = 35 / 10

3.5 = 3.5

Therefore , the corresponding sides of the triangles are equal

Hence , the pair of triangles are similar triangles

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