The scatter plot shows the study times and test scores for a number of students. How long did the person who scored 81 study?

Answer:

625 mm

Step-by-step explanation:

$50 worth in dimes is 500 dimes. 500 dimes times 1.25mm per dime = 625mm

Answer:

75

Step-by-step explanation:

Henry started with 20 convertibles and 5 trucks.

His aunt bought him x miniature trucks.

Now, his convertibles represent 1/5 of his collection.  How many trucks did her aunt buy?

So, if his convertible represent 1/5 of his collection now, that means his collection is 5 times larger than the number of convertibles.  We know he has 20 convertibles... so the collection now counts 100 (5 * 20) items.

Out of 100 items, we remove the 20 convertibles to get a total of 80 trucks.

Then we subtract the initial 5 trucks... so, his aunt bought him 75 trucks.

His aunt bought 75 trucks

Order of Operations in Mathematics follow this following rule :

This rule is known as the PEMDAS method.

In working on a mathematical problem, we first calculate operation that is in parentheses, follow by exponentiation, then multiplication or division, and finally addition or subtraction.

Let us tackle the problem!

Let :

Number of Additional Miniature Trucks from Henry's Aunt = X

Initial Number of Convertibles = 20

Initial Number of Trucks = 5

Henry's aunt bought him some more miniature trucks,Henry found that one-fifth of his collection consisted of convertible.

[tex]\frac{1}{5}( 20 + 5 + x ) = 20[/tex]

[tex]\frac{1}{5}( 25 + x ) = 20[/tex]

[tex]( 25 + x ) = 20 \div \frac{1}{5}[/tex]

[tex]25 + x = 20 \times \frac{5}{1}[/tex]

[tex]25 + x = \frac{20 \times 5}{1}[/tex]

[tex]25 + x = \frac{100}{1}[/tex]

[tex]25 + x = 100[/tex]

[tex]x = 100 - 25[/tex]

[tex]x = \boxed {75 ~ \texttt{trucks}}[/tex]

Henry's aunt bought him 75 trucks

Grade: Middle School

Subject: Mathematics

Chapter: Percentage

Keywords: Linear , Equations , 1 , Variable , Line , Gradient , Point , Multiplication , Division , Exponent , PEMDAS , percentange , percent

ANSWER

{x|x<0} and {x|x>0}

EXPLANATION

If the two inequalities have an intersection,then it has a solution.

If the two inequalities have no intersection, then there is no solution.

The inequality {x|x<0} and {x|x>0} has no intersection, there is no solution.

The inequalities

{x|x≤0} and {x|x≥0},

{x|x≤0} or {x|x≥0}

both have intersection, therefore have solutions.

Answer:

y = √-2x+7

y = -√-2x+7

Answer:

x² + y² - 4x + 1 = 0

Step-by-step explanation:

The equation of a circle in general form is

x² + y² + 2gx + 2fy + c = 0

Given

(x - 2)² + y² = 3 ← expand the squared factor

x² - 4x + 4 + y² = 3 ( subtract 3 from both sides )

x² + y² - 4x + 1 = 0 ← in general form

Answer:

A

Step-by-step explanation:

Given 2 sides and the included angle use the Cosine rule to solve for x

x² = 1.6² + 1.1² - (2 × 1.6 × 1.1 × cos78° )

    = 2.56 + 1.21 - ( 3.52 × cos78° )

   = 3.77 - 0.7318

   = 3.0382

Take the square root of both sides

x = [tex]\sqrt{3.0382}[/tex] = 1.7 → A

Answer: 64.7

Step-by-step explanation: 258.8 divided by 4

ANSWER

(–4.5, 4.25)

EXPLANATION

The first equation is

[tex]y = - \frac{5}{2}x - 7[/tex]

This function is in the slope-intercept form

The second equation is:

x + 2y = 4

2y =-x+ 4

[tex]y = - \frac{1}{2}x + 2[/tex]

The graph of the two functions are shown in the attachment.

The point of intersection represents the solution to the system of equations they represent.

The solution is

(–4.5, 4.25)

Answer: the answer is 12 dollars

Step-by-step explanation: turn the percent 15 into a decimal, then just multiply .15*80 to get your answer

Answer: $12

Step-by-step explanation: 80$ is the cost. you're taking 15% of the cost. 15% of the cost is .15 of 80$. .15 x 80 is 12

The answer is:

The second option:

[tex]Volumen_{max}=(8-2x)(6-2x)*x[/tex]

From the statement, we know the dimensions of the box, and the length of the sides to be cut (x).

So,

Working with the length of the box:

Let be 8 the length of the cardboard for the length of the box, so, if we cut out the side of length "x", we have:

[tex]Length=(8-(x+x))=(8-2x)[/tex]

Now,

Working with the width of the box:

Let be 6 the length of the cardboard for the width of the box, so, if we cut out the side of length "x", we have:

[tex]Length=(6-(x+x))=(6-2x)[/tex]

Now that we already know the length and the width of the box, we must remember that the bottom of the box will have the same length "x", so, the greatest possible volume of the cardboard box will be:

[tex]Volumen_{max}=Length*Width*Bottom=(8-2x)(6-2x)*x[/tex]

Have a nice day!

Answer: The second option!

Step-by-step explanation:

Answer:

I don't understand the question take a snip it or take a picture of the question

Step-by-step explanation:

Answers= 12, 30 and 10.

Explanation: 12-5 is 7

30-5 is 25

15-5 is 10

Answer:

D

Step-by-step explanation:

This graph shows two vertical asymptotes, one at x = +3, the other at x = 4.  Thus, we omit the first two answer choices.  Next, we substitute 0 for x and determine the y value in Answer Choice C:  F(0) = 0.  Does the graph go through (0, 0)?  Yes, it does.  Next, evaluate F at x = 3.5 (halfway between x =  3 and x = 4); that is, evaluate function D at x = 3.5.  Does the y value come out to be -4 as shown in the graph?  Yes, it does.    So D is the correct function to match this graph.

Considering the vertical asymptotes of the function, and it's behavior, it is found that the rational function graphed below is given by:

D. [tex]f(x) = \frac{1}{(x - 3)(x - 4)}[/tex]

The vertical asymptotes are the values of x which are outside the domain, which in a fraction are the zeroes of the denominator.

In this problem:

Thus, the correct option is:

D. [tex]f(x) = \frac{1}{(x - 3)(x - 4)}[/tex]

More can be learned about vertical asymptotes at https://brainly.com/question/11598999

Answer:

The equation of the line is y = 4x

Step-by-step explanation:

* Lets revise how to form an equation of a line from its slope and

 a point on the line

- The equation of a line is written as y = mx + b where m is the

  slope of the line and b is the y-intercept.

- The line intersect the y-axis at point (0 , b)

* Lets solve the problem

- The line has slope = 4

- The line passes through the point (2 , 8)

∵ The slope = 4

∵ m is the slope of the line in the equation

∴ m = 4

- Substitute the value of m in the equation

∵ y = mx + b

∴ y = 4x + b

- To find the value of b substitute the x-coordinate and the

  y-coordinate of the point instead of x and y of the equation

∵ The point (2 , 8) lies on the line

∵ y = 4x + b

- Put x = 2 and y = 8 in the equation to find b

∴ 8 = 4(2) + b ⇒ simplify

∴ 8 = 8 + b ⇒ subtract 8 from both sides

∴ 0 = b

- That means the y-intercept = 0 and the line passing through

  the origin point

∴ y = 4x + 0

* The equation of the line is y = 4x

Answer:

3 /2

Explanation:

If two lines are perpendicular , when you multiply the gradients together you get -1

The slope of a line is 2/3 What is the slope of a line that is perpendicular to this line?

Answer:

-3/2

-$1.71

To find the average of a set of numbers, you add them all together and divide by the amount of numbers.

Start by adding the numbers together to get -8.55.

Since they are 5 numbers, divide -8.55 by 5 to get -1.71.

So, the average daily change of the stock’s value is -$1.71.

Answer:

[tex]\large\boxed{y=-(x+5)^2+4}[/tex]

Step-by-step explanation:

[tex]\text{The vertex form of an quadratic equation}\\\\f(x)=ax^2+bx+c=a(x-h)^2+k\\\\h=\dfrac{-b}{2a}\\\\k=f(k)=\dfrac{-(b^2-4ac)}{4a}\\=================================[/tex]

[tex]\text{We have:}\\\\y=-x^2-10x-21\\\\a=-1,\ b=-10,\ c=-21\\\\h=\dfrac{-(-10)}{2(-1)}=\dfrac{10}{-2}=-5\\\\k=f(-5)=-(-5)^2-10(-5)-21=-25+50-21=4\\\\y=-(x-(-5))^2+4=-(x+5)^2+4[/tex]

Final answer:

The vertex form of the quadratic equation  [tex]y = -x^2 - 10x - 21[/tex]is  [tex]y = -(x + 5)^2 + 4[/tex], with the vertex being (-5, 4).

Explanation:

To find the vertex form of the quadratic equation  [tex]y = -x^2 - 10x - 21[/tex], we need to complete the square. Here's a step-by-step guide:

Start with the given quadratic equation:  [tex]y = -x^2 - 10x - 21.[/tex]

Factor out the coefficient of the  [tex]x^2[/tex]term from the first two terms:  [tex]y = -(x^2 + 10x) - 21.[/tex]

Find the number that completes the square for the expression [tex]x^2 + 10x.[/tex]This is  [tex](10/2)^2 = 25.[/tex]

Add and subtract this number inside the parentheses, then group the perfect square and the constant terms: y = -[tex](x^2 + 10x + 25 - 25) - 21.[/tex]

Rewrite the equation, recognizing the perfect square trinomial:  [tex]y = -[(x + 5)^2 - 25] - 21.[/tex]

Combine the constant terms: [tex]y = -(x + 5)^2 + 4.[/tex]

The vertex form of the equation is  [tex]y = -(x + 5)^2 + 4[/tex], where the vertex of the parabola is (-5, 4).

X = 50

To solve this equation you would use 2x-5=95

Then you would solve and X = 50

Divide 1800 by 1/5 and then add the answer to 1800 (4/5) so you get a whole: then double.

The answer is 90 elves.

Here's how to find it

100 giants = 100/160 or 5/8

3/8 is left for the elves

3/8 x 240 = 90

Final answer:

90,708,501 cubic feet .

Explanation:

The volume of a pyramid is calculated by using the formula V = (1/3) × (base area) × (height). Since Becky learned that the Great Pyramid of Giza has a square base with each side measuring 751 feet, we can calculate the base area as follows: base area = side × side = 751 feet × 751 feet. We then multiply this area by the height of the pyramid, which is 481 feet, and divide by 3 to find the volume. The calculation is as follows:

base area = 751 ft × 751 ft

Volume = (1/3) × base area × height

Volume = (1/3) × (751 × 751) ft² × 481 ft

Volume = 90,708,501 ft³

2. and 3. are already in slope intercept form.

1. y=4x-2

4. y=3x-2

Answer:

[tex]x=\frac{4}{3}[/tex]

Step-by-step explanation:

The given logarithmic equation is

[tex]\log_{3x+4}(4096)=4[/tex]

We take antilogarithm to get:

[tex]4096=(3x+4)^4[/tex]

We write the left hand side as a power.

[tex]8^4=(3x+4)^4[/tex]

Since the exponents are the same the bases are also equal.

[tex]8=3x+4[/tex]

[tex]8-4=3x[/tex]

[tex]4=3x[/tex]

Divide both sides by 3;

[tex]x=\frac{4}{3}[/tex]

Answer:

x = [tex]\frac{-3}{k}[/tex]

Step-by-step explanation:

Given

kx + 7 = 4 ( isolate the term in x by subtracting 7 from both sides )

kx = - 3 ( divide both sides by k )

x = [tex]\frac{-3}{k}[/tex] = - [tex]\frac{3}{k}[/tex]

Answer:

The value of the equation for x is [tex]x=\frac{-3}{k}[/tex]

Step-by-step explanation:

Consider the provided equation.

[tex]kx+7=4[/tex]

We need to solve the equation for x.

Subtract 7 from both the sides.

[tex]kx+7-7=4-7[/tex]

[tex]kx=-3[/tex]

Divide both sides of the equation with k.

[tex]\frac{kx}{k}=\frac{-3}{k}[/tex]

[tex]x=\frac{-3}{k}[/tex]

Hence, the value of the equation for x is [tex]x=\frac{-3}{k}[/tex]

Answer:

Final answer is [tex]F\left(1\right)=0.2625[/tex].

Step-by-step explanation:

Given function is [tex]F\left(t\right)=\frac{2.1}{2^3t}[/tex].

Now we need to use that function [tex]F\left(t\right)=\frac{2.1}{2^3t}[/tex] to find the value of F(1).

F(1) means value of functino F(t) at t=1, So plug t=1 into given function.

[tex]F\left(t\right)=\frac{2.1}{2^3t}[/tex]

[tex]F\left(1\right)=\frac{2.1}{2^3(1)}[/tex]

[tex]F\left(1\right)=\frac{2.1}{8(1)}[/tex]

[tex]F\left(1\right)=\frac{2.1}{8}[/tex]

[tex]F\left(1\right)=0.2625[/tex]

Hence final answer is [tex]F\left(1\right)=0.2625[/tex].

Answer:

The solution is [tex]F(1) = \frac{1}{4}[/tex]

Step-by-step explanation:

Given function is [tex]2\times \frac{1}{2^{3t}}[/tex]

We need to find the value of function [tex]F(t) = 2\times \frac{1}{2^{3t}}[/tex] at t = 1

Replace t with 1 in [tex]F(t) = 2\times \frac{1}{2^{3t}}[/tex]

[tex]F(1) = 2\times \frac{1}{2^{3(1)}}[/tex]

[tex]F(1) = 2\times \frac{1}{2^{3}}[/tex]

[tex]F(1) = 2\times \frac{1}{8}[/tex]

[tex]F(1) = \frac{2}{8}[/tex]

[tex]F(1) = \frac{1}{4}[/tex]

Therefore, the solution is [tex]F(1) = \frac{1}{4}[/tex]

The square root of 44 is 6.633249581

If you were going to round to the nearest whole number, it would be seven.

Hope that helps!

The value square root of 44 is 6.63 thus nearest integer of the square root of 44​ will be 7.

To round up or down tens place then we need to look at the unit place if it is less than 5 then we need to keep it as it and if it is greater than 5 then we need to round up the tens digit.

In order to round to a hundred, we need to look at the tens digit if it is less than 5 then we keep it as it is.

As per the given,

The square root of 44​ = √44

√44 = 6.633249581

Since 6 > 5 so it will round up to the nearest integer.

6.633249581 → 7

Hence "The value square root of 44 is 6.63 thus nearest integer of the square root of 44​ will be 7".

To learn more about rounding a digit,

https://brainly.com/question/116595

#SPJ2

Answer: [tex]1.38\frac{g}{cm^3}[/tex]

Step-by-step explanation:

You need to remember the formula for calculate the density:

[tex]density=\frac{mass}{volume}[/tex]

In this case:

[tex]density_{(rock)}=\frac{mass_{(rock)}}{Volume_{(rock)}}[/tex]

You know that:

[tex]mass_{(rock)}=15.5g[/tex]

And when it is placed in a graduated cylinder, the volume is displaced from 25.0 mL to 36.2 mL.

Then, the volume of the rock is:

[tex]Volume_{(rock)}=36.2mL-25.0mL=11.2mL[/tex]

Since [tex]1mL=1cm^3[/tex], you can rewrite the volume as:

[tex]Volume_{(rock)}=11.2cm^3[/tex]

Substituting values into the formula, you get that the density of the rock is:

[tex]density_{(rock)}=\frac{15.5g}{11.2cm^3}=1.38\frac{g}{cm^3}[/tex]

Answer:

Their people deserved to determine their own political futures.

Step-by-step explanation:

Answer:

Wilson believed that in conquered empires their people deserved to determine their own political futures

Step-by-step explanation:

Wilson was convinced that democracy was gaining ground allover the world so he declared that he believed "just government must rest upon the consent of the governed" during his taking over  of office. he worked with the secretary of state Bryan to sign 22 bilateral treaties to agreed to cooling periods

conquered Latin American states were granted freedom to conduct there own affairs without American interference during this period

Answer:

Step-by-step explanation:

This explains step by step

Hope this helps! <3 -K

Answer:

25

Step-by-step explanation:

Pythagorean theorem :

a² + b² = c²

Substitute the values:

24² + 7² = x² (c = x)

576 + 49 = x²

625 = x²

x = √625

x = 25

Answer:

one solution : x = -1

Step-by-step explanation:

look this solution :

The solutions of the given rational equation are negative one and three.

If the value of a numerical expression is terminating then they are the rational number then they are called the rational number and if the value of a numerical expression is non-terminating then they are called an irrational number.

The rational equation is given below.

[tex]\rm \dfrac{1}{x-4} + \dfrac{x}{x-2} = \dfrac{2}{x^2-6x+8}[/tex]

By solving the equation, then we have

[tex]\begin{aligned} \dfrac{1}{x-4} + \dfrac{x}{x-2} &= \dfrac{2}{x^2-6x+8}\\\\ \dfrac{x- 2 + x(x - 4)}{(x-4)(x - 2)} &= \dfrac{2}{x^2-6x+8}\\\\\dfrac{x^2 -4x + x - 2}{x^2 - 6x + 8} &= \dfrac{2}{x^2-6x+8}\\\\x^2 - 3x - 2 &= 2\\\\x^2 - 3x - 4 &= 0\end[/tex]

Then the solution of the equation will be

          x² - 3x - 4 = 0

    x² - 4x + x - 4 = 0

x(x - 4) + 1 (x - 4) = 0

       (x - 4)(x + 1) = 0

                       x = -1, 4

More about the rational number link is given below.

https://brainly.com/question/9466779

#SPJ2