im confused someone help :(

Answer:

3

Step-by-step explanation:

65-23= 42

42/14= 3

Answer:

14x+23 =65 x=3CDs

Step-by-step explanation:

So for any question where you need to write your own equation, it is first necessary that you determine what each number in the problem means in order to determine where they should go. James has $65 so the equation needs to be set equal to 65. The problem says he wants to buy a DVD for $23 so that would be a constant $23 spent regardsless of how many CDs he buys. We are trying to use the equation to determine how many CDs James can buy so the number of CDs is the x value at $14 each which would be 14x in the equation. so the equation would be the 14x for the unknown number of CDs, plus 23 for the constant DVD that James would buy set equal to the $65 he can use to buy everything.

To solve the equation, you must now isolate for x. To start, cancel out the +23 on the left side by subtracting 23 from both sides. This will leave 14x=42. You must then cancel the 14 by dividing both sides by 14 leaving your answer of x=3CDs.

I hope this helps.

Each pizza cost $ 12.65

An Equation is used in determination of unknown variables in an expression .

It is given that

Brian ordered 3 large cheese pizzas and a salad.

The salad cost $4.95

Total amount spend = $47.60

Tip = $5

The amount spend in food is $ 47.60-5

= $42.60

Let the price of Pizza is x then the equation that can be formed to determine the price of pizza is

3x + salad = 42.60

3x + 4.95 = 42.60

3x = 37.65

x = $12.65

Therefore each pizza cost $ 12.65

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Answer:

12.55

Step-by-step explanation:

Answer:

The ratio of women to men that the school employs can be expressed as:

6:8

This ratio can be simplified by dividing both sides by their greatest common factor, which is 2:

6 ÷ 2 : 8 ÷ 2

3 : 4

Therefore, the ratio of women to men in simplest form is 3:4.

Step-by-step explanation:

Answer:

3:4

Step-by-step explanation:

To reduce a fraction to its simplest term, we always divide both the numerator and denominator by the Least Common Multiple (LCM)

Answer:

D

Step-by-step explanation:

x^2-12x+36

type into desmos and see where it touches the the line

In interval notation, the domain is (1, ∞).

The Riemann zeta function for real numbers is defined as ζ(x) = ∑n=1 to ∞ (n^-x) for all x for which the series converges.

To find the domain of the function, we need to determine for which values of x the series converges.

Using the p-series test, we know that the series ∑n=1 to ∞ (n^-x) converges if x > 1. Therefore, the domain of the Riemann zeta function is x > 1.

In interval notation, the domain is (1, ∞).

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Answer:

2/3

Step-by-step explanation:

slope = rise/run

Start at point (0, -3).

Go up 2. That is a rise of 2.

Go right 3. That is a run of 3.

slope = rise/run = 2/3

Answer:

ssss

Step-by-step explanation:

dddd

Answer:

hey there!

I guess you shouldn't be saying ugly to anyone..

that's not good..

Answer:

hi

Step-by-step explanation:

Given Z2, the integer system modulo 2, and the set G whose elements are a 2×2 . matrix with the component in Z2 and whose determinant is different from 0, we need to show the set G equipped with matrix multiplication operations to form groups.

A group is a set of elements with an operation that combines any two of its elements to form a third element, and the operation satisfies four properties:

Closure property: Let A, B ∈ G, then

A = $\begin{bmatrix}a_{11}&a_{12}\\a_{21}&a_{22}\end{bmatrix}$,

B = $\begin{bmatrix}b_{11}&b_{12}\\b_{21}&b_{22}\end{bmatrix}$

Now,

AB

=$\begin{bmatrix}a_{11}b_{11}+a_{12}b_{21}&a_{11}b_{12}+a_{12}b_{22}\\a_{21}b_{11}+a_{22}b_{21}&a_{21}b_{12}+a_{22}b_{22}\end{bmatrix}$.

The determinant of AB is $(a_{11}b_{22} - a_{12}b_{21})(a_{21}b_{12} - a_{22}b_{11})$.

This determinant is not equal to 0, because determinant of A and B are not equal to 0.

Therefore, the matrix AB is an element of G.

Thus G is closed under multiplication property.

Associativity property: Let A, B, C ∈ G, then(A.B).C = A.(B.C).

Let I denote the 2 x 2 identity matrix.

It is a matrix with elements 1's in the main diagonal and 0's elsewhere, then AI = IA

= A for all A ∈ G.

Hence, I is the identity element in G.

Inverse element,

For A = $\begin{bmatrix}a_{11}&a_{12}\\a_{21}&a_{22}\\

end {bmatrix}$, $\begin{vmatrix}a_{11}&a_{12}\\a_{21}&a_{22}\

end{vmatrix}

= a_{11}a_{22} - a_{12}a_{21} ≠ 0$.

Thus, there exists a matrix $A^{-1}$ such that AA-1 = A-1A

= I,

where$$A^{-1} = \frac{1}{a_{11}a_{22} - a_{12}a_{21}}\begin{bmatrix}a_{22}&-a_{12}\\-a_{21}&a_{11}\end{bmatrix}$$.

Therefore, the set G equipped with matrix multiplication operations to form groups.

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Total contribution margin is an accounting metric that evaluates how well a company's sales income covers its variable expenses. The company's total contribution margin can be found using the formula: Total Contribution Margin = Total Revenue - Total Variable Costs.

1. Determine the total revenue: This is the amount of money the company makes from selling its products or services. You can find this by multiplying the selling price of each product by the number of units sold.

2. Determine the total variable costs: These are the costs that change depending on the level of production or sales. Examples of variable costs include raw materials, direct labor, and shipping costs. Calculate the variable cost for each product by multiplying the variable cost per unit by the number of units produced or sold.

3. Subtract the total variable costs from the total revenue to find the total contribution margin. This value represents the amount of money the company has remaining after covering its variable costs, which can be used to cover fixed costs and contribute to profit.

So, to calculate the company's total contribution margin, use the formula: Total Contribution Margin = Total Revenue - Total Variable Costs, and follow the steps above.

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Answer:

128 <33

Step-by-step explanation:

6 ÷ 3 + 32 • 4 - 2 = 128

▪︎▪︎▪︎▪︎▪︎▪︎

Since both group sizes are prime numbers, there are no common factors between them. Thus, the LCM is simply the product of the two group sizes: 8 * 7 = 56.

To find the minimum number of daisies and lilies that Andrea must have watered, we need to determine the least common multiple (LCM) of the group sizes, which in this case are 8 for daisies and 7 for lilies.

The LCM of 8 and 7 is 56. This means that Andrea must have watered at least 56 flowers in total, with an equal number of daisies and lilies. The LCM represents the smallest multiple that both 8 and 7 can divide evenly into.Since both group sizes are prime numbers, there are no common factors between them. Thus, the LCM is simply the product of the two group sizes: 8 * 7 = 56.

Therefore, Andrea must have watered a minimum of 56 flowers, with an equal number of daisies and lilies, in order to meet the given planting arrangement.

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The expression equivalent to\(-4x^2 + 2x - 5(1 + x)\)  is \(4x^2 + 8x + 5.\)

This expression matches the form \(x^2 + x + c,\) where c = 5.

To simplify the given expression \(-4x^2 + 2x - 5(1 + x)\) and make it equivalent to the expression \(x^2 + x + c,\) where c is a constant term, we need to perform some algebraic operations.

First, let's distribute the -5 to the terms inside the parentheses:

\(-4x^2 + 2x - 5 - 5x\)

Next, we can combine like terms:

\(-4x^2 + (2x - 5x) - 5 - 5x\)

Simplifying further:

\(-4x^2 - 3x - 5 - 5x\)

Now, let's rearrange the terms to match the form \(x^2 + x + c:\)

\(-4x^2 - 3x - 5x - 5\)

To make the leading coefficient positive, we can multiply the entire expression by -1:

\(4x^2 + 3x + 5x + 5\)

Now, we can combine the x-terms:

\(4x^2 + 8x + 5\)

So, the expression equivalent to \(-4x^2 + 2x - 5(1 + x)\) is \(4x^2 + 8x + 5.\)This expression matches the form \(x^2 + x + c,\) where c = 5.

It's important to note that the original expression and the equivalent expression have different coefficients and constants, but they represent the same mathematical relationship.

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Answer:

Step-by-step explanation:

See attached image.

Answer:

A

Step-by-step explanation:

Answer:

78.5 ft² (nearest tenth)

Step-by-step explanation:

area of circle = \(\pi r^2\)

⇒ area = \(\pi\) x 5² = 25\(\pi\) = 78.5 ft² (nearest tenth)

Two triangles are said to be similar when; two of their corresponding angles are the same angle measure.

A triangle is a polygon with three sides and three angles.

Types of triangles

Two triangles are said to be similar if two pairs of their corresponding angles are congruent. This is because if two pairs of angle are the equal, then the third pair must also be equal.

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Answer:

85 degrees Fahrenheit

Step-by-step explanation:

Answer:

2.5 in.

Step-by-step explanation:

The triangle formed by the beams is a right triangle so we can apply the Pythagoras theorem:

6.5^2 = x^2 + 6^2

x^2 = 42.25 - 36

x^2 = 6.25

x = 2.5,

Factor using the perfect square rule.

( 3 y − 4 ) ^2

Answer: 3x+ 4 units

Step-by-step explanation:

9x^2 + 24x + 16 =(3x +4) (3x + 4)          

lenth of each side 3x+  units

Step-by-step explanation:

mass(m)= 3kg

height(h)= 2m

gravity(g)= 9.8 m/s^2

P.E.= mgh

=3*2*9.8

=58.8 Joule

Answer:

58.84 Joules

Step-by-step explanation:

3(Mass)*2(Height)*9.8=58.84J

Answer:

  B.  across the y-axis

Step-by-step explanation:

The line of reflection is the perpendicular bisector of the segment between the orginal point and its image. If you plot the two points, you see that the y-axis is that bisector.

The point was reflected across the y-axis.

__

Additional comments

Changing the sign of the x-coordinate means a point that was some distance on one side of the y-axis is now that same distance on the other side. That is, the y-axis is the line of reflection when the sign of x changes.

Similarly, the x-axis is the line of reflection when the sign of y changes.

  (x, y) ⇒ (-x, y) . . . . reflection across the y-axis

  (x, y) ⇒ (x, -y) . . . . reflection across the x-axis

__

Changing the signs of both coordinates (in either order) is effectively a reflection across the origin. There are other names for this reflection, too.

  (x, y) ⇒ (-x, -y) . . . . reflection across both axes, across the orign, rotation 180°

The statement "I estimate that the probability of my getting married in the next 3 years is 0.7" does make sense.

As individuals, we can make personal estimates or predictions about events that are relevant to our lives, such as the probability of getting married in a certain timeframe. These estimates are based on our own subjective beliefs, experiences, and expectations. While they may not be based on precise mathematical calculations or rigorous statistical analysis, they can still reflect our personal opinions or perceptions.

In this case, the person is providing an estimate that they believe there is a 0.7 (or 70%) probability of getting married within the next 3 years. This estimate is a subjective assessment of their own chances based on various factors such as their current relationship status, personal goals, or cultural norms.

It is important to note that personal estimates like this are not necessarily based on concrete evidence or universally applicable probabilities. They can vary greatly from person to person and are subjective in nature. However, they can still hold personal meaning and influence one's decision-making or expectations regarding future events.

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Answer:

The equation for this picture(graph) is:

y = -x+3

Slope: Rise/run

= 3/3

= 1

= -1 (negative because the slope is decreasing).

Y-intercept is where the line touches the y-axis

Answer:

y=5x

Step-by-step explanation:

slope =5

y intercept= 0

Answer:

I cant solve it without the inequality symbol sorry.

Step-by-step explanation:

The depth of the water in the cone-shaped tank is increasing at a rate of approximately 1.385 meters per second.

To determine the rate at which the depth of the water is changing, we can use related rates. Let's denote the depth of the water as h(t), where t represents time. We are given that dh/dt (the rate of change of h with respect to time) is 12 m/sec, and we want to find dh/dt when h = 18 meters.

To solve this problem, we can use the volume formula for a cone, which is V = (1/3)πr^2h, where r is the base radius and h is the depth of the water. We can differentiate this equation with respect to time t, keeping in mind that r is a constant (since the base radius does not change).

By differentiating the volume formula with respect to t, we get dV/dt = (1/3)πr^2(dh/dt). Now we can substitute the given values: dV/dt = 12 m/sec, r = 26 meters, and h = 18 meters.

Solving for dh/dt, we have (1/3)π(26^2) (dh/dt) = 12 m/sec. Rearranging this equation and solving for dh/dt, we find that dh/dt is approximately 1.385 meters per second. Therefore, the depth of the water in the tank is increasing at a rate of about 1.385 meters per second.

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