how to turn fractions into percentages

Lisa must swim 30 laps to cover the distance of 450 meters, by dividing the total distance she wants to swim by the length of one lap.

To calculate how many laps Lisa must swim to cover a distance of 450 meters, we divide the total distance she wants to swim by the length of one lap. Since the length of one lap is 15 meters, we perform the following calculation:

Therefore, Lisa needs to swim 30 laps to reach her goal of swimming 450 meters this week.

Answer:

8n=20+6(n-2)

Step-by-step explanation:

n is the number of GB

Plan A has no initial fee and charges 8$ per each GB

So A has an equation that is y=0+8n or just y=8n.

Plan B has 20 for the first 2 GB and $6 for each addition GB after the first 2.

So B has an equation  that is y=0+20+6(n-2) assuming n is 2 are greater.

So the two equations are y=8n and y=20+6(n-2).

We want Plan A to be the same as Plan B.

So we need to solve:

8n=20+6(n-2).

Let's check our equation:

Distribute:

8n=20+6n-12

Subtract 6n on both sides:

2n=20-12

2n=8

Divide both sides by 2:

n=4

Plan A charges 8 dollars ber GB, so plan A charges 4(8)=32 dollars.

Plan B charges 20 dollars for the first 2GB and 6 dollars for each GB after so we used 4 which means we are spending 20+6(2)=20+12=32 dollars.

They are the amount so n=4 is right.

I am very late to answer this, but I want to help others who struggle on this question! The answer and explanation is in the picture, thank me later! :)

Answer:

[tex]\large\boxed{f^{-1}(x)=\dfrac{1}{3}x+5}[/tex]

Step-by-step explanation:

[tex]f(x)=3x-15\to y=3x-15\\\\\text{exchange x to y and vice versa:}\ x=3y-15\\\\\text{solve for}\ y:\\\\3y-15=x\qquad\text{add 15 to both sides}\\\\3y=x+15\qquad\text{divide both sides by 3}\\\\y=\dfrac{x}{3}+5\\\\y=\dfrac{1}{3}x+5[/tex]

Answer:

Step-by-step explanation:

The equation is in vertex form ...

  y = a(x -h)² +k . . . . . . . . vertex (h, k) and vertical scale factor "a"

  y = (x +2)² -1

so, you can read the vertex coordinates directly from the equation:

  (h, k) = (-2, -1)

__

The line of symmetry is the vertical line through the vertex, so has equation ...

  x = h

  x = -2 . . . . for this parabola

__

The vertex is always a point on the graph.

At x-values ±1 either side of the vertex, the vertical distance from the vertex is "a". Here, that is 1 unit, so the points (-3, 0) and (-1, 0) are on the graph.

At x-values ±2 either side of the vertex, the vertical distance from the vertex is a·2². Here that is 4 units, so the points (-4, 3) and (0, 3) are on the graph.

This is basically what the vertex form of the equation is telling you.

Answer:

11.84 feet

Step-by-step explanation:

The given scenario will form a right angled triangle where the distance and the point from where the angle of elevation is measured will be the base of the triangle.

We know

Angle of elevation = x = 28 °

Height of pole = p = 6.3 feet

Distance from pole = d= ?

So,

[tex]tan\ x = \frac{p}{b}\\ tan\ 28 = \frac{6.3}{b} \\0.5317 = \frac{6.3}{b}\\b = \frac{6.3}{0.5317}\\b=11.84\ feet[/tex]

Therefore, the distance from the pole is 11.84 feet ..

Answer:

A should be the answer

Step-by-step explanation:

ok so first find area of a circle the area of this circle

pi r sqared

the area of the circle is 3.14

since the raduis is diamter ÷ 2

the area of the small rectangle would be 2a sqared

so if i did it right the answer should be A

I could be wrong tho

hope this helped

Answer:

4names: z3, zt, zstu, zuts

Answer:

x+3y=14

Step-by-step explanation:

Standard form for an equation of a line is ax+by=c . Some books have restrictions on a,b, and c.

So first thing I'm going to do is state the equation I'm going to use to get there.

I'm going to use the point-slope form because we are given a point (2 really) and we can find the slope using two points (we have).

Line up points and subtract. You will then put second difference over the first difference.  This will give you the slope. You could just use (y2-y1)/(x2-x1).

( -1 , 5)

-(  2, 4)

-----------

-3     1

So the slope is 1/-3 or -1/3 .

So the equation in point-slope form, y-y1=m(x-x1), is y-4=-1/3 (x-2) .

y-4=-1/3 (x-2)

First step: I'm going to get rid of the fraction by multiplying both sides by 3.

3y-12=-1(x-2)

Second step: Distribute

3y-12=-x+2

Third step: add x on both sidfes

x+3y-12=2

Fourth step: add 12 on both sides

x+3y=14.

Answer:

$104,000

The probability that the average salary between two groups is the same, is actually low. It could be close, but it's quite difficult to get the same exact amount.

Answer:

y= 125,000 (1.15x)

Step-by-step explanation:

Answer:

A. [tex]y=125,000\cdot (1.15)^x[/tex]

Step-by-step explanation:

We have been given that Jessa bought her home for $125,000 in 2010 Property values have increased 15% every year since she has owned the home.

We can see that increase in value of house is not constant, so the value of house in increasing exponentially.

We know that an exponential function is in form [tex]y=a\cdot b^x[/tex], where,

a = Initial value,

b = For growth b is in form [tex](1+r)[/tex], where r represents growth rate in decimal form.

[tex]r=\frac{15}{100}=0.15[/tex]

[tex]y=125,000\cdot (1+0.15)^x[/tex]

[tex]y=125,000\cdot (1.15)^x[/tex]

Therefore, the equation [tex]y=125,000\cdot (1.15)^x[/tex] represents the price of the home x years after 2010.

Answer:

-10 is the answer

Step-by-step explanation:

Diving 10 feet below sea level increases the pressure by 1 atmosphere (ATA), causing the body's air pockets to compress. Divers must equalize the pressure by adding air to these airspaces on the descent.

When diving 10 feet below sea level, the pressure increases by 1 atmosphere (ATA). According to Boyle's law, the volume of gases decreases as pressure increases. The increase in pressure can compress the body's air pockets, such as those in the ears and lungs, which can cause discomfort or injury. Divers must equalize the pressure by adding air to these airspaces on the descent.

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Answer:

150 bags

Step-by-step explanation:

Given the total area:

The area will be:

=75*50

= 3750 square feet

As it is given that one bag covers 25 square feet. To find the total number of bags we have to find how many 25s will be in 3750 square feet.

So,

Total number of bags = 3750 / 25

= 150 bags

Hence, total number of bags that will be used are 150 ..

Answer:

Two line segments are congruent if they have the same length. Two angles are congruent if they have the same measure.

Two angles are said to be congruent if they are equal. For example, if two triangles each have an angle of 42 degrees, then those angles are congruent.

The Inverse of the function f(x) = (1/3)^x is derived by swapping x and y and solving for y, resulting in f^-1(x) = log base (1/3) of x.

To find the Inverse of a function in the form f(x) = (1/3)^x, you need to interchange x and y and solve for y.

So, the Inverse of the function f(x) = (1/3)^x is first represented as x = (1/3)^y. However, we need to isolate y. We can do this by taking a logarithmic function on both sides. It turns out that y = log base (1/3) of x.

In other words, the inverse of f(x) = (1/3)^x is f^-1(x) = log base (1/3) of x.

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Answer:

So we have [tex]\csc(\theta)=\frac{3 \sqrt{5}}{5} \text{ and } \tan(\theta)=\frac{-\sqrt{5}}{2}[/tex].

Step-by-step explanation:

Ok so we are in quadrant 2, that means sine is positive while cosine is negative.

We are given [tex]\cos(\theta)=\frac{-2}{3}(\frac{\text{adjacent}}{\text{hypotenuse}})[/tex].

So to find the opposite we will just use the Pythagorean Theorem.

[tex]a^2+b^2=c^2[/tex]

[tex](2)^2+b^2=(3)^2[/tex]

[tex]4+b^2=9[/tex]

[tex]b^2=5[/tex]

[tex]b=\sqrt{5}[/tex]  This is the opposite side.

Now to find [tex]\csc(\theta)[/tex] and [tex]\tan(\theta)[/tex].

[tex]\csc(\theta)=\frac{\text{hypotenuse}}{\text{opposite}}=\frac{3}{\sqrt{5}}[/tex].

Some teachers do not like the radical on bottom so we will rationalize the denominator by multiplying the numerator and denominator by sqrt(5).

So [tex]\csc(\theta)=\frac{3}{\sqrt{5}} \cdot \frac{\sqrt{5}}{\sqrt{5}}=\frac{3 \sqrt{5}}{5}[/tex].

And now [tex]\tan(\theta)=\frac{\text{opposite}}{\text{adjacent}}=\frac{\sqrt{5}}{-2}=\frac{-\sqrt{5}}{2}[/tex].

So we have [tex]\csc(\theta)=\frac{3 \sqrt{5}}{5} \text{ and } \tan(\theta)=\frac{-\sqrt{5}}{2}[/tex].

Answer:

[tex]tan\theta{3}=-\frac{\sqrt5}{2}[/tex]

[tex]cosec\theta=\frac{3}{\sqrt5}[/tex]

Step-by-step explanation:

We are given that [tex]\theta[/tex] be an  angle in quadrant II and [tex]cos\theta=-\frac{2}{3}[/tex]

We have to find the exact values of [tex]cosec\theta[/tex] and [tex]tan\theta[/tex].

[tex]sec\theta=\frac{1}{cos\theta}[/tex]

Then substitute the value of cos theta and we get

[tex]sec\theta=\frac{1}{-\frac{2}{3}}[/tex]

[tex]sec\theta=-\frac{3}{2}[/tex]

Now, [tex]1+tan^2\theta=sec^2\theta[/tex]

[tex]tan^2\theta=sec^2\theta-1[/tex]

Substitute the value of sec theta then we get

[tex]tan^2\theta= (-\frac{3}{2})^2-1[/tex]

[tex]tan^2\theta=\frac{9}{4}-1=\frac{9-4}{4}=\frac{5}{4}[/tex]

[tex]tan\theta=\sqrt{\frac{5}{4}}=-\frac{\sqrt5}{2}[/tex]

Because[tex] tan\theta [/tex] in quadrant II is negative.

[tex]sin^2\theta=1-cos^2\theta[/tex]

[tex]sin^2\theta=1-(\farc{-2}{3})^2[/tex]

[tex]sin^2\theta=1-\frac{4}{9}[/tex]

[tex]sin^2\theta=\frac{9-4}{9}=\frac{5}{9}[/tex]

[tex]sin\theta=\sqrt{\frac{5}{9}}[/tex]

[tex]sin\theta=\frac{\sqrt5}{3}[/tex]

Because in quadrant II [tex]sin\theta[/tex] is positive.

[tex]cosec\theta=\frac{1}{sin\theta}=\frac{1}{\frac{\sqrt5}{3}}[/tex]

[tex]cosec\theta=\frac{3}{\sqrt5}[/tex]

[tex]cosec\theta[/tex] is positive in II quadrant.

[tex]\huge{\boxed{\text{vertical}}}[/tex]

[tex]\text{A vertical line is a line where all of the x values are the same.}[/tex]

[tex]\text{In this case, both of the points have an x value of -3, so this is a vertical line.}[/tex]

Answer:

2(x - 3) = 7

Step-by-step explanation:

Set up the difference part first.

x - 3

Now deal with the "Twice."

2(x - 3)

Next equals

2(x - 3) =

And finally what it equals

2(x - 3) = 7

Answer:

2(x-3)=7

Step-by-step explanation:

Dont take my word for it double check with someone else.

Answer:

[tex]x = 11[/tex]

Step-by-step explanation:

The bases of a trapezoid are parallel

The angles,

[tex](9x) \degree[/tex]

and

[tex](7x + 4) \degree[/tex]

are same side interior angles. These two angles are supplementary.

[tex](7x + 4) + 9x = 180 \degree[/tex]

[tex]7x + 9x = 180 - 4[/tex]

[tex]16x = 176[/tex]

Divide both sides by 16.

[tex]x = \frac{176}{16} [/tex]

[tex]x = 11[/tex]

Answer:

[tex]x=11[/tex]

Step-by-step explanation:

We have been given that a carpenter cuts the corners of a rectangle to make the  trapezoid. We are asked to find the value of x.

Since trapezoid is made of rectangle, so both bases will be parallel to each other.

We know that two consecutive interior angle of parallel lines are supplementary. We can set an equation to solve for x as:

[tex]9x+7x+4=180[/tex]

[tex]16x+4=180[/tex]

[tex]16x+4-4=180-4[/tex]

[tex]16x=176[/tex]

[tex]\frac{16x}{16}=\frac{176}{16}[/tex]

[tex]x=11[/tex]

Therefore, the value of x is 11.

Answer:

c. 19.73

Step-by-step explanation:

The Cosine rule shows states that:

a²=b²+c²-2bcCos A, where a, b and c are the sides of the triangle and A is the angle at vertex A.

A=108°

b=9

c=15

Substituting with the values above gives:

a²=9²+15²-(2×9×15 Cos 108)

a²=389.4346

a=19.73

Answer:

y - 1 = -2(x + 1).

Step-by-step explanation:

The slope = (-3-1)/(1 - -1)

= -4 / 2

= -2.

In point slope form:

y - y1 = m(x - x1)

Using m = -2 and the point (-1, 1):

y - 1 = -2(x + 1).

Answer:

see explanation

Step-by-step explanation:

The equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (- 1, 1) and (x₂, y₂ ) = (1, - 3)

m = [tex]\frac{-3-1}{1+1}[/tex] = [tex]\frac{-4}{2}[/tex] = - 2

Using either of the 2 points as a point on the line, then

Using (- 1, 1)

y - 1 = - 2(x - (- 1)), that is

y - 1 = - 2(x + 1) ← in point- slope form

The answer is:

A.

[tex]h(x)=9x-13[/tex]

To solve the problem, we need to perform the shown operation.

We have the functions:

[tex]f(x)=2x-1\\g(x)=7x-12[/tex]

So, performing the following operation, we have:

[tex]f(x)+g(x)=h(x)[/tex]

[tex]h(x)=f(x)+g(x)=(2x-1)+(7x-12)=7x+2x-1-12=9x-13[/tex]

[tex]h(x)=9x-13[/tex]

Hence, we have that the correct option is:

A. [tex]h(x)=9x-13[/tex]

Have a nice day!

Answer: A

Step-by-step explanation:

Answer:

The mode is 4 and the median is 8

Step-by-step explanation:

The mode is the number the occurs the most in the set, and as you can see 4 appears twice. The median is the number that lies in the middle of the set when put together from least to greatest. When you write it out it results in 2,4,4,8,9,10,12. As you can see the number 8 lies right in the middle, with three numbers on it's left and three numbers on it's right. Hope this helps :)

Final answer:

median: 8

mode: 4

Explanation:

Calculate the median and mode for a data set, including step-by-step instructions.

Median: To find the median, arrange the data set in numerical order first. As the data set has seven values, the median will be the fourth value, which is 8. Median represents the middle most value of the data

Mode: The mode is the value that appears most frequently in the data set. In this case, the mode is 4 as it occurs twice. Mode represents the maximum frequency.

Answer:

C.

Step-by-step explanation:

The remote exterior angles are angle x and y

The sum of two  interior angles (x +y) is equal to the value of exterior angle (z)

m∠x=(5n-19)°

m∠y=(n+7)°

m∠z=(144-6n)°

Equate as

∠x+∠y=∠z

(5n-19)° +(n+7)°=(144-6n)°

5n-19+n+7=144-6n----------------------collect like terms

5n+n+6n=144+19-7

12n=156---------------------divide both sides by 12 to get value of n

n=156/12= 13°

substitute value of n is equations

∠x=(5n-19)° =(5×13)-19 =65-19=46°

∠y=(n+7)°= (13+7)=20°

Measure of remote exterior angle will be 20°+46°=66° (From the theorem of interior angles and exterior angles)

Answer:

[tex]\large\boxed{-2(10r+4)+10(7r+2)=50r+12}[/tex]

Step-by-step explanation:

[tex]-2(10r+4)+10(7r+2)\qquad\text{use the distributive property}\ a(b+c)=ab+ac\\\\=(-2)(10r)+(-2)(4)+(10)(7r)+(10)(2)\\\\=-20r-8+70r+20\qquad\text{combine like terms}\\\\=(-20r+70r)+(-8+20)\\\\=50r+12[/tex]

Answer:

The second layer of skin is the dermis, located under the epidermis. It contains connective tissue, nerve endings, and hair follicles.

The dermis layer of the skin contains hair follicles.

The layer of the skin that contains hair follicles is the dermis.

The dermis is the layer of skin directly under the epidermis, and it is made of tough connective tissue. It contains hair follicles, sweat glands, oil glands, and blood vessels.

For example, when you pluck a hair from your skin, you are pulling it out from the dermis.

Answer:

Step-by-step explanation:

[tex]\left\{\begin{array}{ccc}x+5y=10\\3x+y=1&\text{multiply both sides by (-5)}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}x+5y=10\\-15x-5y=-5\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad-14x=5\qquad\text{divide both sides by (-14)}\\.\qquad x=-\dfrac{5}{14}\to x\approx-0.357\\\\\text{Put it to the equation}\ 3x+y=1:\\\\3(-0.357)+y=1\\-1.071+y=1\qquad\text{add 1.071 to both sides}\\y=2.071[/tex]

Answer: The temperature change is 19 degrees Fahrenheit.

Step-by-step explanation: Put a circle at -9 and 10. You can count the numbers in between them to get 19. Or you can add the two numbers. 9 + 10 = 19.

Answer:

Statement 2 (The ages of the Stars are the most dispersed from the team’s mean).

Step-by-step explanation:

Standard deviation is one way to measure the average of the data by determining the spread of the data. It actually explains how much the observation points are further away from the mean of the data. Higher the standard deviation, higher the spread of the data and higher is the uncertainty. This means that the team with the highest standard deviation will have the most dispersion. In this case, the standard deviation of 4.1 is the largest number, therefore, the statement "The ages of the Stars are the most dispersed from the team’s mean." is true i.e. the option 2!!!

Answer:

B.The ages of the Stars are the most dispersed from the team’s mean

Step-by-step explanation:

Answer:

116500

Step-by-step explanation:

We are looking for the number of twin births in 2000.

Let the number of twin births in 2000 be x.

The number of twin births in 2000 is 100% of the number of births in 2000 since 100% of something is the entire thing.

The number of twin births went up 15% from 2000 to 2014, so in 2014, the number of twin births was 100% of the number of twin births plus another 15% of the number of twin births.

100% + 15% = 115%

The number of twin births in 2014 was 115% of x.

The number of twin births in 2014 was 133975.

115% of x = 133975

115% * x = 133975

1.15x = 133975

x = 133975/1.15

x = 116500

The number of twin births in 2000 was 116500.

An increase by 15% means 15 added to per cent (per = each; cent=100).

If the population was 100 in the year 2000 then it would be 115 in the year 2014. (adding 15 to 100)

The population was 116500 in the year 2000 and it increased to 133975 in the year 2014.

Let the population be x in the year 2000.

Using ratio and proportion

Year 2000 : Year 2014

100              :       115

x                  :    133975

Applying cross product rule

x × 115= 100× 133975

x= 100× 133975/115

x= 116500

The population was 116500 in the year 2000 and it increased to 133975 in the year 2014.

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Answer:

To simplify the expression let's multiply and divide by (8+5i) as follows:

[tex]\frac{(11+19i)(8+5i)}{(8-5i)(8+5i)}= \frac{207i-7}{89}= 2.32i - 0.08[/tex]'

Now, we have successfully removed the imaginary number from the denominator.