HELPPP ITS ABOUt DILATION EXPLANATION NEEDED PLZZZ

Answer:

Starting with Algebra going down is 73%, 70%, 72%

Geometry going down is 27%, 30%, 28%

Totals going down 100%, 100%, 100%

(LOL)

Hope that was helpful.Thank you!!!

Step-by-step explanation:

Answer:

Last option is the correct choice.

Step-by-step explanation:

[tex]\frac{36}{24}=\frac{12}{x}\\\\\Rightarrow x=8[/tex]

Best Regards!

Answer:

2(t + 6) - 5

Step-by-step explanation:

If we are strictly following the directions, we first add t and 6 together:

t + 6

Then we multiply by 2 AFTER we add the 2 together:

(t + 6)2

At last, we subtract 5 from everything after:

2(t + 6) - 5

And we have our answer!

Answer:

2(t+6)-5

Step-by-step explanation:

The unknown number is t

=> Adding 6 will make it t+6

=> Multiplying by 2 will make it 2(t+6)

=> Subtracting 5 will make it 2(t+6)-5

Answer:

"The probability that the mean battery life would be greater than 948.8 minutes" is 0.1446.

Step-by-step explanation:

In this case, the quality control expert takes a sample of batteries. From these batteries, we want to find "the probability that the mean battery life would be greater than 948.8 minutes".

Different concepts needed to take into account to solve this question

Sampling Distribution of the Means

For doing this, we need to use the sampling distribution of the means, which results from taking the mean for each possible sample coming from a random variable [tex] \\ x[/tex]. Roughly speaking, each sample will have a different mean, [tex] \\ \overline{x}[/tex], and the probability distribution for any of these means is called the sampling distribution of the means.

The sampling distribution of the means has a mean that equals the population's mean for the random variable [tex] \\ x[/tex], i.e., [tex] \\ \mu[/tex], and its standard deviation is [tex] \\ \frac{\sigma}{\sqrt{n}}[/tex]. We can express this mathematically as:

[tex] \\ \overline{x} \sim N(\mu, \frac{\sigma}{\sqrt{n}})[/tex] [1]

Standardized Values for [tex] \\ \overline{x}[/tex]

We can standardized the values for [tex] \\ \overline{x}[/tex] using z-scores:

[tex] \\ Z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex] [2]

This random variable [tex] \\ Z[/tex] follows a standard normal distribution, that is, [tex] \\ Z \sim N(0,1)[/tex], and it is easier to find probabilities since the values for them are tabulated in the standard normal table (available in any Statistics book or on the Internet.)

What type of distribution follows the sampling distribution of the means?

A general rule of thumb is that this distribution (the sampling distribution of the means) follows a normal distribution if the sample size, [tex] \\ n[/tex], is bigger than or equal to 30 observations, or [tex] \\ n \geq 30[/tex]. In this case, [tex] \\ n = 109[/tex] batteries. This is a result from the Central Limit Theorem, fundamental in Statistical Inference.

Standard Deviation

We have to remember that the standard deviation is the square root of the variance [tex] \\ \sigma^2[/tex], or [tex] \\ \sqrt{\sigma^2}[/tex].

Therefore, the standard deviation in this case is [tex] \\ \sigma = 77[/tex] minutes.

In sum, we have the following information to answer this question:

What is the probability that the mean battery life would be greater than 948.8 minutes?

Well, having all the previous information, we can use [2] to solve this question (without using units):

[tex] \\ z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]

[tex] \\ z = \frac{948.8 - 941}{\frac{77}{\sqrt{109}}}[/tex]

[tex] \\ z = \frac{7.8}{\frac{77}{\sqrt{109}}}[/tex]

[tex] \\ z = \frac{7.8}{7.37526}[/tex]

[tex] \\ z = 1.05758 \approx 1.06[/tex]

This result is the standardized value or z-score for [tex] \\ \overline{x}[/tex], considering [tex] \\ \mu = 941[/tex] and [tex] \\ \sigma = 77[/tex].

We round z to two decimals digits since standard normal table only uses it as an entry to find probabilities.

With [tex] \\ z = 1.06[/tex], we can consult the cumulative standard normal table. First, we need to find with [tex] \\ z = 1.0[/tex] in the first column in the table. Then, in its first raw, we need to find +0.06. The intersection for these two values determines the cumulative probability for [tex] \\ P(z<1.06)[/tex].

It is important to recall that [tex] \\ P(z<1.06) = P(\overline{x}<948.8)[/tex] because [tex] \\ z = 1.06[/tex] is the standardized value for [tex] \\ \overline{x} = 948.8[/tex] minutes.

Then,  [tex] \\ P(z<1.06) = 0.8554[/tex]

However, the question is about [tex] \\ P(\overline{x} > 948.8) = P(z>1.06)[/tex]

And

[tex] \\ P(\overline{x} > 948.8) + P(\overline{x} < 948.8) = 1 [/tex]

Or

[tex] \\ P(z>1.06) + P(z<1.06) = 1[/tex]

Then

[tex] \\ P(z>1.06) = 1 - P(z<1.06)[/tex]

[tex] \\ P(z>1.06) = 1 - 0.8554[/tex]

[tex] \\ P(z>1.06) = 0.1446[/tex]

Therefore, "the probability that the mean battery life would be greater than 948.8 minutes" is 0.1446.

Answer: y=-64

Step-by-step explanation:

From the first sentence: the value of y varies directly with x:

y∝x

y=cx where c=variation constant

When y=40 x=-5

40=-5c

Therefore c=-8

To find y when x=8

y=cx where c=-8 and x=8

y=-8*8

y=-64

Answer:

Step-by-step explanation:

x            y

1            2

2           4

3           9

4           16

This sounds like a quadratic equation of f(x)=x^2, thus, the range is:

Answer:

7 is the correct answer

Answer:

6km

Step-by-step explanation:

==>Given:

Map scale = 1 : 200,000

Distance on map between the park and the theatre = 3cm

==>Required:

Real life distance between the town and the theatre in km

==>Solution:

Note: the map scale given means 1cm on the map represents 200,000 cm in real life.

For a map distance of 3 cm between the town and the theatre, the real life distance would be:

3 × 200,000 = 600,000 cm

=>Convert to km

Thus, 100,000cm = 1km

Therefore, 600,000cm = 6km

Real life distance between the town and the theatre = 6km

So 3 have no pets, so 25 - 3 = 22 students have a pet.

There are 15 cats and 16 dogs so 15 + 16 = 31.

And then 31 - 22 = 9. The 9 means that 9 students have both pets.

So the probability is 9/25.

Answer:

number of students who have cat and dog

= y

= 9

P( student chosen has a dog and cat )

= 9/25

Answer:

Add 4x to both sides

Step-by-step explanation:

on Edge

Answer:

B

Step-by-step explanation:

Answer:2x+4(C)

Step-by-step explanation:

Since all of the variables have integer exponents that are positive this is a polynomial.

Answer:

D) 132°

Step-by-step explanation:

8x+12=5x+57    subtract 5x from both sides

3x+12=57           subtract 12 from both sides

3x= 45                divide by 3 from both sides

X=15

5(15)+57=132°

Answer:

D. All living things are made up of cells.

Step-by-step explanation:

D. All living things are made up of cells.

O The cell theory is a widely accepted principle of biology. Scientists that contributed to the cell theory include; Theodor Schwann, Matthias Schleiden, and Rudolph Virchow.

The cell theory states that;

O All living organisms are made up of cells and they may be unicellular or multicellular.

O The cell is the basic structural and functional unit of life.

Cells arise from pre-existing cells.  

Answer:

26 units.

Step-by-step explanation:

AB + BC + AC = AC + AD + DC + 4

AC is common so

AB + BC = AD + DC + 4

AB + BC - AD - DC = 4

Substituting the given values

AB + 7 - 5 - 6 = 4

AB = 4 - 7 + 5 + 6 =  8

So the perimeter of ABCD

= AB + BC + AD + CD

= 8 + 7 + 5 + 6

= 26.

Answer:

No Solution

Step-by-step explanation:

I used a graphing tool to graph the equations. When graphed, the lines are parallel and they do not intercept at a point.

There is no solution; your answer should be correct.

Answer:

yes it is no solution

Step-by-step explanation:

this is because since they both have the same slope, that means the two lines are parallel

and so therefore they will never intersect

so the answer is no solution

Answer:

C (rad 2 x rad 5 x rad 2 x rad 5)

Step-by-step explanation:

rad 2 times rad 5 = rad 10

rad 10 times 2 = rad 20

rad 20 times rad 5 = rad 100

rad 100 = 10

10 is rational

Answer:

The answer is C:  1

Step-by-step explanation:

Answer:

  [tex]\dfrac{30\,\text{mi}}{1\,\text{h}}=\dfrac{900\,\text{mi}}{t}[/tex]

Step-by-step explanation:

Since you have miles in the numerator of your rate, you need miles in the numerator of the equivalent fraction:

  [tex]\dfrac{30\,\text{mi}}{1\,\text{h}}=\dfrac{900\,\text{mi}}{t}[/tex]

This can be rearranged to ...

  [tex]\dfrac{t}{1\,\text{h}}=\dfrac{900\,\text{mi}}{30\,\text{mi}}=30[/tex]

Then, multiplying by 1 h gives the solution ...

  t = 30 h

It takes 30 hours to travel 900 miles at 30 miles per hour.

the answer is:

d. 900/? hours

Answer:

x=30

Step-by-step explanation:

4x+2x=180

6x=180

x=30

The value of x will be 30 for the given supplementary angles.

Supplementary angles are those angles that sum up to 180 degrees. For example, angle 110° and angle 70° are supplementary angles because the sum of 110° and 70° is equal to 180°.

Given ∠EAF and ∠BAF are supplementary angles

Since sum of two supplementary angles = 180

Thus,

∠EAF + ∠BAF = 180

2x + 4x = 180

6x = 180

x = 30

therefore, the value of x will be 30 for the given supplementary angles.

Learn more about supplementary angles here:

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Answer:

(4x^2 +9) (4x^2 -9) =0

Step-by-step explanation:

16x^4 - 81 =0

Rewriting

(4x^2) ^2 - 9^2 =0

This is the difference of squares a^2 -b^2 = (a+b)(a-b)

(4x^2 +9) (4x^2 -9)=0

Step-by-step explanation:

x5 - 4x + 7x3 + 8 + 9x3 + 7x2 - 10 - 2x5 + 7x4 - 3x + 8

Arranging

x5 - 2x5 + 7x4 + 7x3 + 9x3 + 7x2 - 4x - 3x + 8 - 10 +8

-1 + 7x4 + 16x3 + 7x2 - 7x + 6

7x4 + 16x3 + 7x2 - 7x + 5

Answer:

2x + y - 4 = 0

Step-by-step explanation:

slope = -2

y = mx + b

2 = -2(1) + b

4 = b

y = -2x + 4

2x + y - 4 = 0

Answer:

the answer is 2x + y - 4 = 0

Step-by-step explanation:

me and my friend did the math and got 2x + y - 4 = 0

Answer:

[tex]x=-1/2[/tex]

Step-by-step explanation:

[tex]4 x - 6 = 10 x - 3[/tex]

[tex]4 x -10x= - 3+6[/tex]

[tex]-6x=3[/tex]

[tex]-6x/6=-3/6[/tex]

[tex]x=-1/2[/tex]

Answer:

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

Step-by-step explanation:

[tex]4x - 6 = 10x - 3 \\ - 6 + 3 = 10x - 4x \\ - 3 = 6x \\ \frac{ - 3}{6} = \frac{6x}{6} \\ x = - \frac{1}{2} [/tex]

Answer:

Translation down 2 units

Step-by-step explanation:

If a number is added or subtracted like that at the end of a function, it will either lift or put down a function however many units the number says. In this case, the number says 2, so the transformation would be a "Translation down 2 units".

Answer:

Domain: All real numbers

Range: All real numbers

Step-by-step explanation:

Domain is all the x-value inputs that can be used in the equation.

Range is all the y-value outputs that can be used in the equation.

Since the equation is linear, any value of x and y would work for both domain and range, so both are (negative infinity, positive infinity).

Answer:

✔ 128

into the  

✔ small

tank.

After the 32 minutes, how much oil is in the large tank?  

✔ 472

gallons

Step-by-step explanation: Just did it on Edge

Using the given flow rate and time we found that after a period of 32 minutes 128 gallons of oil is moved from large tank to small one. The oil  in large tank after 32 minutes is 472 gallons.

Rate of work done is the amount of work done per unit time

rate of work done = amount of work / time taken

Given that flow rate is positive when oil is moving in large tank and rate of flow is negative when oil is moving in small tank

Given that flow rate is recorded -4 gallons per minute, which is negative .

It means that the oil is flowing in the small tank.

Rate of flow, r is 4 gallons per minutes , here work is oil flowing into a tank

Rate of flow, r  = oil flown in a tank / time taken

Given that time, t = 32 minutes

∴ rate of flow × time taken = Oil flown in small tank

⇒ r× t = oil flown in small tank = 4 × 32 = 128 gallons

Initially oil in large tank = 600 gallons

Thus, 128 gallons are moved from large tank to small tank in 32 minutes

After 32 minutes remaining oil in large tank = 600 - 128 = 472 gallons

Also, Learn more about rate of work done from the link below:

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Answer:

11.7

Step-by-step explanation:

You can form a right triangle with these points with a base of 11 and height of 4 with the third point as (-3, 1).

Using the Pythagorean Theorem, we get:

[tex]11^2+4^2=c^2\\121+16=c^2\\137=c^2\\c^2=137\\c=\sqrt{137}\\c=11.7[/tex]

The distance from A to B is roughly 11.7 units long.

The answers is  AB= 12.5.

The graph is nothing but an organized representation of data. It helps us to understand the data. Data are the numerical information collected through observation.

The word data came from the Latin word Datum which means “something given”

After a research question is developed, data is being collected continuously through observation. Then it is organized, summarized, classified, and then represented graphically.

As, per the graph

the base = 11 units and the height = 6 units

So, Using Pythagoras theorem,

11² + 6² = AB²

121+36 = AB²

157= AB²

AB = √157

hence, AB= 12.529

Learn more about graph here:

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Answer:

A.) ŷ = 7X + 27.625

B.) check Explanation

C.) $77,000

Step-by-step explanation:

Given the following :

Education(x) : 3 4 6 2 5 4 8 0

Salary (y) : $40 36 56 35 72 47 107 52

A.) Using the linear regression calculator :

ŷ = 7X + 27.625

Salary = 7(education) + 27.625

B.) The Coefficient for education refers to the gradient or slope of the linear graph, the Coefficient is the ratio of the change in salary earned to education. The slope, which is the Coefficient of education is 7.

C.)What is the predicted salary for an individual who completed 7 years of higher education?

ŷ = 7X + 27.625

Salary = 7(education) + 27.625

Salary = 7(7) + 27.625

Salary = 49 + 27.625

Salary = $76.625

Salary = $77,000 ( nearest whole number)

Answer:

-7

Step-by-step explanation:

To find x, substitute the values and solve.

R = 2x + 9y

It becomes:

2x  + 27 = 13

Rearrange and solve

2x = -14

x = -7

Hope this helps

Answer:

x=-7

Step-by-step explanation:

We are given the expression:

R=2x +9y

We want to find x when R=13 and y=3. Therefore, we must substitute the numbers in for the variables.

13=2x+9(3)

Multiply 9 and 3.

13=2x+27

Now we must solve for x by isolating x on one side of the equation.

27 is being added to 2x. The inverse of addition is subtraction, so subtract 27 from both sides.

13-27=2x+27-27

13-27=2x

-14=2x

x is being multiplied by 2. The inverse of multiplication is division, so divide both sides by 2.

-14/2=2x/2

-14/2=x

-7=x

x=-7