Hey um can somone help me out please i dont know what is correct and wrong ​

Answer: it mean 7-9.

Step-by-step explanation:

7 is smaller than 9, so the answer is going to be negative. I like to do

7-9

Is basically just 9-7, just put a negative label

So 7-9 can be solved as 9-7=2 slap on a negative sign and -2! Hope this helps!

The expression that represents the total cost of buying and shipping the baseball cards,

= 6(1.75) + 5(9.5) + 2(20.5) + 4

Combining objects and counting them as one big group is done through addition. In arithmetic, addition is the process of adding two or more integers together. Addends are the numbers that are added, and the sum refers to the outcome of the operation.

Given:

Jake is buying baseball cards for his brother in college.

The price of a card is based on its condition.

The table shows the total cost of x number of cards for each condition.

He buys 6 that are in fair condition, 5 that are in good condition, and 2 that are in excellent condition.

The shipping cost for the baseball cards is $4.00.

The expression that represents the total cost of buying and shipping the baseball cards,

= 6(1.75) + 5(9.5) + 2(20.5) + 4

= 10.5 + 47.5 + 41 + 4

= 103

Therefore, the total cost is $103.

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Answer:

4

Step-by-step explanation:

8x + 15 = 5.5x +25

so 2.5x =10

x=4

One concept that I have learnt in geometry is the congruency of triangles.

We know that in geometry, the core of the study is the shapes. We have studied several shapes and the properties of the shapes and there are a lot of concepts that have been discussed.

One of the important concepts of geometry that we have discussed is the congruency of the triangles. There are several reasons why we can say that the triangles are congruent such as;

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The Cartesian product of A(1, 2) and B(a, b) is the set A × B, i.e., {(1, a), (1, b), (2, a), (2, b)}.

Given sets are:

A(1, 2)

B(a, b)

A × B = {1, 2} × {a, b}

         = {(1, a), (1, b), (2, a), (2, b)}

The Cartesian product, which consists of all ordered pairs of items with the first element coming from the first set and the second element coming from the second set, and so on, is a set created from two or more given sets. Once more, an ordered pair set results from the Cartesian product of sets.

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There are several methods that can be used to solve a system of nonlinear equations, but three common ones are: substitution method, elimination method and graphing method.

Substitution method: This involves isolating one variable in one equation and substituting it into the other equation to eliminate that variable. You can then solve for the remaining variable and substitute it back into the original equation to find the solution.

Elimination method: This method involves adding or subtracting the equations in such a way as to eliminate one of the variables. Then you can solve for the remaining variable and substitute it back into the original equation to find the solution.

Graphical method: This method involves graphing both equations on the same coordinate plane and finding the point of intersection of the two lines. The coordinates of this point will be the solution to the system of equations.

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Answer:

Step-by-step explanation:

Answer:

A line plot is the most appropriate way to visualize these data. The scale should be labeled starting at 14 and going up to 19, with increments of 1/8 pound. For example, the x-axis labels could be 14, 14⅛, 14¼, 14⅜, 14½, 14⅝, 14¾, 14⅞, 15, 15⅛ and so on up to 19.

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Answer:

89

Step-by-step explanation:

fibonacci sequence is a famous sequence where each number is the sum of the last two.

Therefore :

34+55 will give us the next number which is 89

The enlarged size of the poster will be 13.5 inches.

A scale factor is defined as the ratio of the scale of a given original object to the scale of a new object that is its representation but of a different size (bigger or smaller).

The scale factor is defined as the proportion of the new image's size to that of the previous image.

Given that Alisha wants to enlarge a photograph to make into a poster for her room. The photograph is 6 inches tall. The poster will be created using a scale of 4.5 inches = 2 inches.

Scale factor = 4.5 / 2 = 2.25

The enlarged size of the poster will be calculated as:-

Size = 6 x 2.25

Size = 13.5 inches

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[tex]x~~ : ~~(x+5)~~ = ~~4~~ : ~~5\qquad \implies \qquad \cfrac{x}{x+5}=\cfrac{4}{5} \\\\\\ 5x=4x+20 \implies x=20[/tex]

The sine function graphed is given as follows:

y = 0.5sin(x - π/4).

The sine function for this problem is defined as follows:

y = Asin(Bx - C).

For which the parameters are given as follows:

The difference between the highest value and the lowest value is of 1, hence the amplitude of the function is givne as follows:

2A = 1

A = 1/2

A = 0.5.

The period of the function is of 2π, hence the parameter b is obtained as follows:

2π/B = 2π

B = 1.

The sine function, without phase shift, should pass through the origin, while the function here was shifted right π/4 units, hence the parameter C is given as follows:

C = π/4.

Hence the function is:

y = 0.5sin(x - π/4).

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Any three equations do not have any solution if all the determinants associated with the system of equations are equal to 0.

For a system of 3 linear equations

a₁x + b₁y + c₁z + d₁ = 0

a₂x + b₂y + c₂z + d₂ = 0

a₃x + b₃y + c₃z + d₃ = 0

We need to find some determinants that will help us determine the no. of solutions it can have.

We have,

 [tex]\Delta = \left[\begin{array}{ccc}a_1&b_1&c_1\\a_2&b_2&c_2\\a_3&b_3&c_3\end{array}\right][/tex]

[tex]\Delta_1 = \left[\begin{array}{ccc}d_1&b_1&c_1\\d_2&b_2&c_2\\d_3&b_3&c_3\end{array}\right][/tex]

[tex]\Delta_2 = \left[\begin{array}{ccc}a_1&d_1&c_1\\a_2&d_2&c_2\\a_3&d_3&c_3\end{array}\right][/tex]

[tex]\Delta_3 = \left[\begin{array}{ccc}a_1&b_1&d_1\\a_2&b_2&d_2\\a_3&b_3&d_3\end{array}\right][/tex]

Now first we need to check the value of Δ

If, Δ ≠ 0, then we can say that the system of equations is consistent and will give us a unique solution.

However, we are concerned with the case when Δ = 0.

If Δ = 0, then we need to find the values of Δ₁, Δ₂, and Δ₃.

If at least one of the three Δ₁, Δ₂, and Δ₃ is not equal to 0 then we say that the equation is consistent.

Now if,

Δ₁ = Δ₂ = Δ₃ = 0, then we need to do the following:-

We need to take any 2 equations and get the values of x and y in terms of z.

Now we need to substitute the value of x and y for these values in the third equation.

If the third equation is satisfied, we can say that they will have infinite solutions but if they don't, then we can say the given system of equations will have no solutions.

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The point opposite to point A is not labeled in the number line.

A picture of numbers on a straight line is called a number line. It serves as a guide for contrasting and arranging numbers. Any real number, including all whole numbers and natural numbers, can be represented by it.

Given a number line,

for any number line points left of zero are negative numbers and points right to the zero are positive numbers,

Given points,  Point A is 2 units to the right = +2

Point B is 4 units to the right = +4

Point C is 2 units to the right of zero = +2

Point D is 3 units to the left of zero = -3

Point E is 5 units to the left of zero = -5

so the point opposite to +2 is -2 which is 2 units left of zero,

but it is not given on the labeled points.

Therefore, the opposite point of A is not labeled.

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Answer:

y = -64

Step-by-step explanation:

y / -8 = 8

y = -64

Answer:

y= -64

Step-by-step explanation:

I don't understand the question but

y/-8 = 8

y = 8×-8

y = -64

Answer:

Domain: is -4 ≤ x ≤ 1
which can be expressed in interval notation as

[-4, 1]

Range is -3 ≤ y ≤ 2

or in interval notation: [-3, 2]

Step-by-step explanation:

The domain is the set of x values from minimum to maximum

The range is the set of y values again from minimum to maximum

Minimum value of x = -4

Maximum value = 1

So range is -4 ≤ x ≤ 1 which can be expressed in interval notation as

[-4, 1]

Minimum y-value is -3 and maximum y-value is 2

Range is -3 ≤ y ≤ 2

or in interval notation: [-3, 2]

The solution is the set of values for the two variables (x, y) that satisfy both equations.

To solve a system of two equations with two variables that are both quadratic (2nd degree), you can use the following steps:

Write the two equations in standard form, which is ax² + bx + c = 0 for each equation, where a, b, and c are coefficients.

Solve each equation separately for one variable by factoring or by using the quadratic formula.

Substitute the value of one variable from one equation into the other equation, and solve for the other variable.

Substitute the value of the other variable from the previous step back into one of the original equations to find the value of the first variable.

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To write 10 more than a number, we use the mathematical operation of addition and the notation 10 + Number = N+10.

To write 10 more than a number, we need to use the mathematical operation of addition. Addition is the process of combining two or more numbers to find the total or sum.

In this case, we are given the number 5 and we are asked to find the number that is 3 more than it. To do this, we can use the mathematical notation: 10 + Number = N+10.

This notation means that we are adding 10 to a number, which results in N+10. The "+" symbol is the addition operator and it is used to indicate that we are performing an addition operation. The "=" symbol is used to indicate that the result of the addition is N+10.

Another way to write 10 more than a number is to use the phrase "10 plus a number". This phrase indicates that we are adding 10 to a number to get N+10.

Therefore, In short, to write 10 more than a number, we use the mathematical operation of addition and the notation 10 + Number = N+10. This means that we are adding 10 to a number, resulting in N+10. It can also be written as "10 plus N", indicating the same operation.

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Answer:

#1) [tex]\frac{1}{7}[/tex]

#2) 4

Step-by-step explanation:

#1) 37x=9x+4

37x=9x+4

-9x

28x=4

28   28

answer: [tex]\frac{4}{28} = \frac{1}{7}[/tex]

#2) 2x+3=11

2x+3=11

        -3

2x= 8

2     2

answer: [tex]\frac{8}{2} =4[/tex]

Answer:

2.29 pounds.

Step-by-step explanation:

The following is the analysis for the response to this query:

There must be some relationship among both the volume and the weight.

According to the given label's information, one cup weighs 99 grams. Given that there are 99/453.6 pounds for every cup as well as you require 7*1 1/2 cups, multiplying 10.5 cups by 99/453.6 pounds for every cup results in 2.3 pounds. A pound (avoirdupois) is defined as 453.6 grammes.

Another way to write this would be:

7 (pecan pie) * 1.5 (cup/pecan pie) * 99 (gram/cup) * 0.0022 (pounds/gram) = 2.292 pounds

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It will take 20.6 hours to paint the house if both painter A and painter B worked together.

Proportions are defined as the concept where two or more ratios are set to be equal to each other.

Suppose we have two ratio p : q and r : s.

If both these ratios are proportional, then we can write it as p: q : : r : s.

This is same as p : q = r : s or p/q = r/s

Let F represent the house fully painted.

Painting done by painter A in 50 hours = F

Painting done by painter A in 1 hour = F/50

Painting done by painter B in 35 hours = F

Painting done by painter B in 1 hour = F/35

If they both paint together,

Painting done by painter A and painter B in 1 hour = F/50 + F/35

                                                                                    = 85/1750 F

                                                                                    = 17/350 F

Time taken to paint 17/350 F = 1 hour

Time taken to paint F = 1 / (17/350)

                                    = 20.588

                                    ≈ 20.6 hours

Hence time taken to paint the house by both working together is 20.6 hours.

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To find the factored form of the quadratic equation x^2 + 8x + 16, we can use the technique of factoring by grouping.

First, we write the equation in the form of (x^2 + ax + b) + (x + c) = 0

x^2 + 8x + 16 = 0

Next, we find two numbers that multiply to b and add to a, in this case, b = 16 and a = 8

We can factor out a common factor of x from the first two terms and x + 4 from the last two terms: x^2 + 8x + 16 = (x^2 + 8x) + (16)

Finally, we can factor out a common factor of x + 4 from both terms:

x^2 + 8x + 16 = x(x + 8) + 4(4)

So the factored form of x^2 + 8x + 16 is (x+4)^2.

You can also find the factored form of the quadratic equation x^2 + 8x + 16 by using the difference of squares method:

x^2 + 8x + 16 = (x+4)^2

It's worth noting that this is a perfect square trinomial, which means that it can be factored into the square of a binomial.

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Answer: Commutative, associative, distributive

Step-by-step explanation: I hope this helped!

Answer: Quantity is the indefinite amount of any material item. It's a measurement of something.

Step-by-step explanation:

I hope this helps!

Answer:

88 yards

Step-by-step explanation:

because the park is 11 inches wide in the drawling, and the scale of it is 1:8

so the actual width of the park is

[tex]11/1/8=11*8=88 yards[/tex]

11 divided by 1/8

A scatter plot or scattergram chart will show the relationship between two different variables or reveals distribution trends.

Now, According to the question:

A graph can be defined as a pictorial representation or a diagram that represents data or values in an organized manner. The points on the graph often represent the relationship between two or more things.

Use a scatter plot to determine whether or not two variables have a relationship or correlation. Are you trying to see if your two variables might mean something when put together? Plotting a scattergram with your data points can help you to determine whether there's a potential relationship between them.

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Answer: Hi there! Your equation would be y = −4x + 8

Step-by-step explanation: I hope this helps!

[tex] \frac{x}{3° } + 49° = 180° \\ [/tex]

Cross multiply

[tex]x + 147° = 180°[/tex]

simplify

x = 180° - 147°

answer : x = 33°

A linear expression is in polynomials when it is expressed as the product of it's factor

A linear expression is an algebraic statement where each term is either a constant or a variable raised to the first power. In other words, none of the exponents can be greater than 1. For example, x² is a variable raised to the second power, but x is a variable raised to the first power.

When two linear factors are expressed together the result forms a polynomial.

A polynomial is an expression in which the power of it's variable is higher than 1. quadratic expression is also an example of polynomial.

For example if an expression is given as (x+2)(x+3). The result of the expression will give x²+5x+6 which is a quadratic expression and a polynomial.

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