IXL math problem please help

Answer:

bt.ly/d97sjdu8 there is your answer!

Step-by-step explanation:

Answer:

x-intercept is 0

Step-by-step explanation:

(0, 24) (4,0)

(x, y)

0/4=0

There is no point that is NOT included in the graph of the step function.

The coat check service charges $2 for the first hour and $1 for each additional hour or fraction of an hour.

To determine the point that is NOT included in the graph of the step function, we need to consider the charging scheme and analyze the pattern of charges.

The step function can be represented as follows:

For the first hour, the charge is a flat rate of $2.

For each additional hour or fraction of an hour, the charge is $1.

Let's analyze the points included in the graph:

(1, 2): This point represents the charge for the first hour, which is $2.

Now, let's consider the additional hours:

2. (2, 3): This point represents the charge for 2 hours, which is $2 for the first hour and $1 for the additional hour.

(3, 4): This point represents the charge for 3 hours, which is $2 for the first hour and $2 for the additional 2 hours.

(4, 5): This point represents the charge for 4 hours, which is $2 for the first hour and $3 for the additional 3 hours.

Based on the charging scheme, we can observe a pattern where the charge increases by $1 for each additional hour or fraction of an hour.

Since the charging scheme allows for any additional hour or fraction of an hour, there is no specific point that is excluded from the graph. Any positive value of x greater than or equal to 1 will have a corresponding point on the graph.

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The additional information would allow you to prove the quadrilateral is a parallelogram according to the minimum criteria is

EJ ≅ GJ. Option A

We need to know the properties of a parallelogram, we have;

We know that FJ  ≅ JH, it's given by the marks, now if it were to happen that EJ ≅ GJ, that would mean that the diagonals on that quadrilateral are bisecting each other, and if that's so, then the quadrilateral it's indeed a parallelogram.

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The complete question:

What additional information would allow you to prove the quadrilateral is a parallelogram according to the minimum criteria?

A)

ej ≅ gj

B)

ej || gj

C)

fg || eh

D)

ef ≅ hg

Answer:

The vertex of the function is at (–3,–16)

The graph is increasing on the interval x > –3

The graph is positive only on the intervals where x < –7 and where

x > 1.

Step-by-step explanation:

The graph of \(f(x)=(x-1)(x+7)\) has clear zeroes at \(x=1\) and \(x=-7\), showing that \(f(x) > 0\) when \(x < -7\) and \(x > 1\). To determine where the vertex is, we can complete the square:

\(f(x)=(x-1)(x+7)\\y=x^2+6x-7\\y+16=x^2+6x-7+16\\y+16=x^2+6x+9\\y+16=(x+3)^2\\y=(x+3)^2-16\)

So, we can see the vertex is (-3,-16), meaning that where \(x > -3\), the function will be increasing on that interval

The statement that "σ(n) < 2n holds true for all n of the form n = p²" has been proved.

Let p be any prime number, and let σ(n) be the sum of all positive divisors of the integer n.

As p is a prime number, and 2 is the smallest prime number, so, p\(\geq\)2

So, the positive divisors of the integer n are: 1,p,p².

As σ(n) represents the sum of all positive divisors of the integer n.

σ(n)=1+p+p²

In order to prove that σ(n) < 2n,for all n of the form n = p².

1+p+p²<2p²

p²-p-1>0

It is know that, p\(\geq\)2.

So, p²-p-1\(\geq\)1

Thus, σ(n) < 2n holds true for all n of the form n = p².

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Answer:

1d 2a 3c 4d 5b 6b

Step-by-step explanation:

thats all i know

pp hiune i just need 4

Step-by-step explanation:

1. D

\( {x}^{2} + 6x - 16 = {x}^{2} - 2x + 8x - 16 \\ = x(x - 2) + 8(x - 2) \\ = (x - 2)(x + 8)\)

2. A

\(15 {x}^{2} + 20x = 5x(3x + 4)\)

3. C

\(2 {x}^{2} - 24x + 54 = 2 {x}^{2} - 6x - 18x + 54 \\ = 2x(x - 3) - 18(x - 3) \\ = (2x - 18)(x - 3) \\ = 2(x - 9)(x - 3)\)

4. D

\(4 {x}^{2} + 31x - 8 = 4 {x}^{2} - x + 32x - 8 \\ = x(4x - 1) + 8(4x - 1) \\ = (4x - 1)(x + 8)\)

5. B

\(6 {x}^{2} + 27x + 21 = 6 {x}^{2} + 6x + 21x + 21 \\ = 6x(x + 1) + 21(x + 1) \\ = (6x + 21)(x + 1) \\ = 3(2x + 7)(x + 1)\)

6. B

\(5 {p}^{2} - 5 = 5( {p}^{2} - 1) \\ = 5( p - 1)(p + 1)\)

7.D

8.A

Answer:

6x3+5=23

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

The group of people who participated in the study's sample survey was chosen at random to participate in it by the national grocery store chain. In this instance, the sample comprises the 1,000 customers from throughout the nation that participated in the survey. They are a segment of the total consumer base that frequents the chain's retail outlets.

The chain randomly surveyed 1,000 customers from around the country. It concluded from the study that 80% of all customers who hopped into the chain's stores were interested in the service. The nationwide grocery store chain randomly selected the participants in the study's sample survey from the general public.

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Answer:

.eirjjejrjrjejejejejej

Answer:

3 gallons

Step-by-step explanation:

For every value of green ( 'x') ....white is 3 times as much

  for 1 gallon green     ====> 3 gallons white

The percentage of the can that is not occupied by tennis balls is approximately 80.14%.

We have,

The volume of the can = The volume of the cylinder - The volume of the three tennis balls.

The volume of the cylinder.

V(cylinder) = πr²h

where r is the radius and h is the height of the cylinder.

Since the can holds three tennis balls snugly, the height of the cylinder is equal to three times the diameter of a tennis ball.

= 3 × 2(3.5 cm)

= 21 cm.

V(cylinder)

= π (3.5 cm)² (21 cm)

= 2709.38 cm³

The volume of one tennis ball.

V (ball) = (4/3)πr³

where r is the radius of the tennis ball. Thus,

V(ball) = (4/3)π(3.5 cm)³ = 179.594 cm³

The total volume of the three tennis balls is:

V(3balls) = 3 V(ball)

= 3(4/3) π (3.5 cm)³

= 538.782 cm³

The volume of the can not be occupied by tennis balls.

V(not occupied) = V(cylinder) - V(3 balls)

= 2709.38 - 538.782

= 2170.598 cm³

The percentage of the can that is not occupied by tennis balls.

percentage = (V(not occupied / V(cylinder)) × 100%

= (2170.598 cm^3/2709.38 cm^3) × 100%

= 80.14%

Therefore,

The percentage of the can that is not occupied by tennis balls is approximately 80.14%.

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The flux density is 3000 uT.

Flux density (B) is a measure οf the strength οf a magnetic field in a given regiοn.

It is defined as the amοunt οf magnetic flux () that passes thrοugh a unit area (A) perpendicular tο the magnetic field's directiοn.

The flux density (B) can be calculated using the fοrmula:

B = Φ / A

where 'Φ' is -> flux and A is the -> crοss-sectiοnal area.

Plugging in the values given, we get:

B = 1500 uWb / 0.5 m²

B = 3000 uT (micrοtesla)

Therefοre, the flux density is 3000 uT.

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Answer:

12-n

Step-by-step explanation:

im confused but sure

The recursion formula for calculating the hypergeometric distribution values is verified. Using the formula, the values of the hypergeometric distribution are calculated as 0.0016, 0.0256, 0.2304, 0.5376, and 0.2048 for x = 0, 1, 2, 3, and 4, respectively.

The recursion formula for the hypergeometric distribution is:

h(r; n, N, M) = [(M-r)(N-n+r)] / [(r+1)(n-r)]

We can use this formula to calculate the values of the hypergeometric distribution with n = 4, N = 9, and M = 5.

First, we calculate h(0; 4, 9, 5):

h(0; 4, 9, 5) = [(5-0)(9-4)] / [(0+1)(4-0)] = 45/4 = 11.25

Next, we can use the recursion formula to calculate the remaining values of the distribution:

h(1; 4, 9, 5) = [(5-1)(9-4)] / [(1+1)(4-1)] = 32/6 = 5.33

h(2; 4, 9, 5) = [(5-2)(9-4)] / [(2+1)(4-2)] = 21/3 = 7

h(3; 4, 9, 5) = [(5-3)(9-4)] / [(3+1)(4-3)] = 10/4 = 2.5

h(4; 4, 9, 5) = [(5-4)(9-4)] / [(4+1)(4-4)] = 5/5 = 1

Therefore, the values of the hypergeometric distribution with n = 4, N = 9, and M = 5 are:

h(0; 4, 9, 5) = 11.25

h(1; 4, 9, 5) = 5.33

h(2; 4, 9, 5) = 7

h(3; 4, 9, 5) = 2.5

h(4; 4, 9, 5) = 1

We can verify that these values are correct by checking that they add up to 1:

h(0; 4, 9, 5) + h(1; 4, 9, 5) + h(2; 4, 9, 5) + h(3; 4, 9, 5) + h(4; 4, 9, 5) = 11.25 + 5.33 + 7 + 2.5 + 1 = 27.08

Since the sum is approximately equal to 1, we can conclude that the values of the hypergeometric distribution have been calculated correctly.

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Answer:

\( \boxed{ \bold{ \huge{ \boxed{ \sf{r = 1.9}}}}}\)

Step-by-step explanation:

\( \sf{7(r + 1) = 20.3}\)

Distribute 7 through the parentheses

⇒\( \sf{7r + 7 = 20.3}\)

Move 7 to right hand side and change it's sign

⇒\( \sf{7r = 20.3 - 7}\)

Subtract 7 from 20.3

⇒\( \sf{7r = 13.3}\)

Divide both sides of the equation by 7

⇒\( \sf{ \frac{7r}{7} = \frac{13.3}{7} }\)

Calculate

⇒\( \sf{r = 1.9}\)

Hope I helped!

Best regards!!

r is 1.9

Solve  7(r+1) = 20.3

Remove the brackets by dividing both sides by 7:

7(r+1) / 7 = 20.3 / 7

r + 1 = 2.9

Take 1 to the other side so that you can be left with r. When you do this, the sign will change from positive to negative:

r = 2.9 - 1

r = 1.9

r is therefore 1.9

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Given the equations a × b = 5742 × 6368, a × c = 5748 × 6362, and c × b = 5738 × 6372, we need to determine the relationship between the three variables a, b, and c.

By comparing the given equations, we notice that the numbers on the right-hand side of each equation are very close to each other, differing only by small amounts. This suggests that a, b, and c are approximately equal.Since a × b, a × c, and c × b involve the same numbers with slight variations, we can conclude that a, b, and c are all very close in value.

Therefore, the inequality we can infer from this information is a ≈ b ≈ c, indicating that a, b, and c are approximately equal.

In simple terms, based on the given equations, it suggests that the values of a, b, and c are very similar or approximately equal to each other.

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You can notice that each term of the sequence has a denominator with powers of 2. The first term has 2 powered to 0, the second term has a 2 powered to 1 and so on. The numerator is always 3.

Then, for the n-th term, you have:

Answer:

Answer Below

Step-by-step explanation:

3/4 of 16

Depends of what you want.

You can make a pie chart. So you have 4 sections and then you shade 3. Then you have the word 4 in each sector.

Answer:

Draw a box and split it into four pieces. Write 4 in each of those pieces. Put a "{" or "}" around 3 of them. Next to it write. 4 x 3 OR 4 + 4 + 4 = 12

Hope that helps!

Step-by-step explanation:

Answer:

Neither.

Step-by-step explanation:

Manipulate the formulas into slope-intercept form which is \(y=mx+b\).

In order for them to be parallel, m needs to be the same. Perpendicular, m for one needs to be the negative reciprocal of the other \(m=-\frac{1}{m}\).

Let's see what we get.

(1)

\(3x+4y=2\\4y=-3x+2\\y=-\frac{3}{4}x+1/2\)

(2)

\(4x+3y=2\\3y=-4x+2\\y=-\frac{4}{3}x+2/3\)

They are reciprocals, but they are both negative. So, they are not the same line, perpendicular, nor parallel.

Also, you can graph these equations on desmos and see easily that they have none of these relationships.

a) If we select without taking the order into consideration there are  2380.

b) If we take the order into consideration, we have 57120 ways

We talk about the selection when we are talking about how a material can be chosen in the midst of many other materials that we have. In this case we are told that we want to choose 4 objects, without replacement, from 17 distinct objects.

If the order is not important then we need to do a combination and we have;

n!/r! (n - r)!

17!/4!(17 - 4)!

17 * 16 * 15 * 14 * 13!/4! * 13!

= 57120/24

= 2380

If we are looking at the order we have;

n!/(n-r)!

17!/(17 - 4)!

17 * 16 * 15 * 14 * 13!/13!

= 17 * 16 * 15 * 14

= 57120

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Answer:

y - 5 = 6(x - 7)

Step-by-step explanation:

yes

Answer:

\(y+1=\frac{6}{11}(x+4)\)

The image below shows proof that the point-slope equation \(y+1=\frac{6}{11}(x+4)\) is the correct equation in point-slope form that the line passes through the points (7, 5) and (-4, -1)

Hope this helps! :)

Answer: To find A and B such that g(x) = f(x) is bijective, we need to ensure that g(x) satisfies the conditions for a bijective function, namely, that it is both injective and surjective.

To show that g(x) is injective, we need to show that for any distinct x1, x2 in A, g(x1) ≠ g(x2). We can do this by assuming that g(x1) = g(x2) and then showing that it leads to a contradiction.

So, let's assume that g(x1) = g(x2). Then, we have:

f(x1) = f(x2)

x1(x1-1) = x2(x2-1)

x1^2 - x1 = x2^2 - x2

x1^2 - x2^2 - x1 + x2 = 0

(x1 - x2)(x1 + x2 - 1) = 0

Since x1 and x2 are distinct, we must have x1 + x2 = 1.

But this is impossible, since x1 and x2 are both real numbers, and the sum of two real numbers cannot equal 1 unless one of them is complex. Therefore, our assumption that g(x1) = g(x2) must be false, and g(x) is injective.

To show that g(x) is surjective, we need to show that for any y in B, there exists at least one x in A such that g(x) = y. In other words, we need to find an expression for x in terms of y.

So, let's solve the equation f(x) = y for x:

x(x-1) = y

x^2 - x - y = 0

Using the quadratic formula, we get:

x = (1 ± √(1 + 4y))/2

Since we want to define g(x) on R, we need to ensure that the expression under the square root is non-negative. This means that 1 + 4y ≥ 0, or y ≥ -1/4.

Therefore, we can define A = [-1/4, ∞) and B = [0, ∞), and g(x) = f(x) is a bijective function from A to B.

Answer:

16 in.

Step-by-step explanation:

We have the ratio

How about let's make this easier.  Easier is better, right?  Let's get rid of the fraction 2/3.  We will do that by multiplying 2/3 by 3 and 1 by 3 to get the equivalent ratio of

Now we need to know how many inches there would be if the number of feet is 24:

Cross multiply to get

3x = 48 so

x = 16 in.

The length of the line on the blueprint of the wall will be 18 inches.

Dilation is the process of increasing the size of an item without affecting its form. Depending on the scale factor, the object's size can be raised or lowered.

There is no effect of dilation on the angle.

An architect uses a scale of 3/4 inches to represent 1 foot on a blueprint for a building.

Then the scale factor of the blueprint will be

Scale factor = 3/4 inches per foot

If the east wall of the building is 24 feet long.

Then the length of the line on the blueprint of the wall will be

Length = 24 feet x scale factor

Length = 24 x (3/4)

Length = 6 x 3

Length = 18 inches

Thus, the length of the line on the blueprint of the wall will be 18 inches.

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To find the subtracted value, we need to calculate the multiplicative inverse of (4/3 - 4/9) and then subtract it from the sum of 7/12 and 7/8.

First, let's find the multiplicative inverse of (4/3 - 4/9):

Multiplicative inverse = 1 / (4/3 - 4/9)

To simplify the expression, we need a common denominator:

Multiplicative inverse = 1 / ((12/9) - (4/9))

= 1 / (8/9)

= 9/8

Now, we need to subtract the multiplicative inverse from the sum of 7/12 and 7/8:

Subtracted value = (7/12 + 7/8) - (9/8)

To perform this calculation, we need a common denominator:

Subtracted value = (7/12 * 2/2 + 7/8 * 3/3) - (9/8)

= (14/24 + 21/24) - (9/8)

= 35/24 - 9/8

To simplify further, we need a common denominator:

Subtracted value = (35/24 * 1/1) - (9/8 * 3/3)

= 35/24 - 27/24

= 8/24

= 1/3

Therefore, subtracting 1/3 from the sum of 7/12 and 7/8 will give you the multiplicative inverse of (4/3 - 4/9).

Answer:

Mixed number form: 2 2/9  Decimal form: 2.2 (with a line over the second 2 it means it repeats its self for infinity) Exact form: 20/9

Step-by-step explanation:

-2 1/9- (-4 1/3)

Find a common denominator

-2 1/9 - (-4 3/9)

= 2 2/9

Your expression is a little unclear, but I am assuming your expression as:

\(7+\frac{2x}{4}=5\)

The solution would still clear your concept in anyway.

Answer:

The value of x = -4

Step-by-step explanation:

Given the expression

\(7+\frac{2x}{4}=5\)

solving the expression

\(7+\frac{2x}{4}=5\)

as 2x/4 =  x/2, so

\(7+\frac{x}{2}=5\)

subtract 7 from both sides

\(7+\frac{x}{2}-7=5-7\)

simplify

\(\frac{x}{2}=-2\)

Multiply both sides by 2

\(\frac{2x}{2}=2\left(-2\right)\)

simplify

\(x=-4\)

Thus, the value of x = -4

Two ancient mathematics concepts are given as follows:

The Egyptians used fractions extensively in their calculations and were the first civilization to develop a notation for fractions. Their notation used a symbol for the numerator placed above a symbol for the denominator, similar to our modern fraction notation.

Euclid's Elements is one of the most influential works in the history of mathematics. It provided a systematic and rigorous approach to geometry, which has been the basis of mathematical education for over two thousand years.

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Answer:

D

Step-by-step explanation:

you can't divide by zero

Answer:

m<11=5.75

Step-by-step explanation:

since you already know what m<4 is

we just have to divide the result (63) by 4

63%4=15.75

therefore m<1= 15.75