What function is inverse of the exponential function y=(1. 5)^x

Answer:

8

Step-by-step explanation:

The points that he average on the last two tests will be 93 points.

A mean is the average of the set of numbers that are given.

On the first five tests that he took, he averaged 86 points. The total points will be:

= 86 × 5

= 430 points

He averaged 88 points on all seven tests. The total will be:

= (88 × 7)

= 616 points

The point average on the last two tests will be:

= (616 - 430)/2

= 186/2

= 93 points

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Answer:

Step-by-step explanation:

0.75x+3-10x=21

Answer:

34

Step-by-step explanation:

hope this helps :)

Answer:

34

Step-by-step explanation:

First, plug in numbers and then solve...

The equivalent expressions indicated are;

1) 1/a^6b^4

2) a^6/b^6

3) a^6/b^5

4) b^6/a^6

5) a^5b^3

We have to note that when we talk about the equivalent expressions, we mean the expressions that we have to get from each other when we carry out a little computational work on the original expression.

Thus, the equivalent expression has shown that the expression that is in the bracket is the same as the original expression by the use of the laws of exponents.

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The critical value for a correlational study consisting of 18 individuals with an alpha level of 0.05 is 0.444. So, the correct answer is D.

A critical value is a numerical value that separates acceptance or rejection of a null hypothesis. It is a cut-off value that indicates the maximum value at which the null hypothesis can be accepted. Critical values are calculated using a significance level and the degrees of freedom.

A significance level is the alpha value of a statistical test that determines the level of statistical significance. The degrees of freedom are the number of independent observations used in the calculation of the statistical test.

For a correlational study consisting of 18 individuals (n = 18) with an alpha level of 0.05, the critical value is 0.444.

Therefore, the correct answer is option D. 0.444.

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Answer:x=5

Step-by-step explanation:

First we do the parenthesis

-4(7+2x)=-7x-33

To get

-28+-8x=7x+-33

and

-8x-28=-7x-33

Then we Add 7x to both sides.

-8x-28+7x=-7-33+7x

-x-28=-33

Then we Add 28 to both sides.

-x-28+28=-33+28

-x=-5

Lastly Divide both sides by -1.

-x/-1=-5/-1

X=5

Answer:

y=2/3-1

Step-by-step explanation:

Two coordinate points are (-3,-3) and (3,1). If you use Y2-Y1/X2-X1, you will find the slope. Then use y=mx+b to find the equation.

More detailed:

1+3/3+3 ** It is + because when there are minus signs it turns to a plus

4/6 Then simplify it

2/3

Now that the slope is found, we need to use y=mx+b

(I used the point (3,1))  1=2/3(3)+b

                                    1=2+b

                                    -1=b

I hope this is helpful gl on the test! :)

Answer:

11 kids

Step-by-step explanation:

Answer: There would be 11 adults

Step-by-step explanation: if there are 66 kids and 1 parent for every 6 kids that would mean that you would have to divide 66 by 6 and 66 divided by 6 is 11

66 % 6 = 11

  (the % sign is the closest sign on my keyboard to a division symble)

Answer:

im 100% sure that th ans is 2200

Step-by-step explanation:

261 is rounded to 300 and 757 is rounded to 800 and 1086 is rounded to 1100 all that added up is 2200

The slope of line perpendicular to line 3x - 6y = 90 is -2.

Slope-Intercept form of equation => y = mx + c

Slope = m

Given equation,

3x - 6y = 90

 x - 2y = 30

      2y = x - 30

        y = x/2 - 15

        y = (1/2)x + (-15)

Here, slope = m1

                   = 1/2

For line perpendicular slope will be negative reciprocal of the slope of given line.

Therefore, slope of other line = m2

                                                 = -1/m1

                                                 = -2

Hence, slope of line perpendicular to line 3x - 6y = 90 is -2.

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Yes, the two lines will intersect as they have a common x-coordinate point

Here, we want to check if the two lines will intersect

By intersecting, it means the lines will cross each other at a particular point

Now, looking at the coordinates of the points, we see that there is an x-coordinate of 7 on both lines

What this mean is that at this coordinate of x, the two lines will surely intersect

\(y = \stackrel{\stackrel{m}{\downarrow }}{-\cfrac{2}{3}}x+6\qquad \impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array}\)

so hmmm then we know the slope of that line is -2/3, so we're really looking for the point-slope form of a line with a slope of -2/3 and that passes through (-3 , 8)

\((\stackrel{x_1}{-3}~,~\stackrel{y_1}{8})\hspace{10em} \stackrel{slope}{m} ~=~ -\cfrac{2}{3} \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{8}=\stackrel{m}{-\cfrac{2}{3}}(x-\stackrel{x_1}{(-3)})\implies y-8=-\cfrac{2}{3}(x+3)\)

Answer:

10m - 15

Step-by-step explanation:

5(2m - 3) = 10m - 15

Step-by-step explanation:

10m-15

times what ever is outside the brackets by the numbers in the brackets

(5*2m minus 5*3)

The correct option is option (C) .

Cluster Sampling is a type of probability sampling and other options are non- probability sampling examples .

Sampling :

Sampling is defined as a technique that selects individual members or subsets from a population to help determine characteristics of the population as a whole.

Croach and Housden postulate that a sample is a finite number taken from a large group for testing and analysis, and that the sample can be taken as representative of the group as a whole.

There are two main types of sampling:

i) probability sampling

ii) Non-probability sampling

A) probability sampling:

It is defined as the sampling technique which researchers use a related method to draw probability theory samples from a larger population.

The most important requirement for probabilistic sampling is that everyone in the population has a known equal chance of being selected.

Probability Samples:

1. Stratified Sampling: Stratified sampling is a type of sampling technique that divides the total population into smaller groups or strata to complete the sampling process. Hierarchies are formed based on some common characteristics of demographic data.

2. Cluster Sampling: Cluster sampling is a probabilistic sampling technique in which researchers divide a population into multiple groups (clusters) for research purposes. Researchers then select random groups using simple sampling techniques for data collection and data analysis.

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Answer:

r² = (2 - (-1))² + (1 - 4)² = 3² + (-3)² = 9 + 9 = 18

(x + 1)² + (y - 4)² = 18

The general form of the equation of the circle is `(x − h)² + (y − k)² = r²`, where the center of the circle is at `(h, k)` and the radius of the circle is `r`.

Given center: `(h, k) = (-1, 4)`Given solution point: `(x, y) = (2, 1)`Let the radius be `r`.

Then, using the distance formula, we can calculate the radius `r`.Distance between center and solution point is `r`i.e. `(x − h)² + (y − k)² = r²

Plugging in the values, we get:`(2 − (-1))² + (1 − 4)² = r²`

Solving for `r`, we get:`3² + (-3)² = r²`

⇒ 18 = r²

⇒ r = ±sqrt(18)`

The center of the circle is `(h, k) = (-1, 4)` and radius of the circle is `r = ±sqrt(18)`.

Hence, the equation of the circle in the general form is`(x − (-1))² + (y − 4)² = (±sqrt(18))²`

On simplifying, we get:`(x + 1)² + (y − 4)² = 18`Therefore, the required equation of the circle in the general form is `(x + 1)² + (y − 4)² = 18`.

Thus, the equation of the circle in the general form is `(x + 1)² + (y − 4)² = 18`.

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Hello there. To solve this question, we'll find how many times George's grandpa is older than his grandson.

First, this is also called the ratio of the ages between George and his grandpa.

To find this, we divide their ages in the order Grandpa : Grandson as following:

Simplify the fraction by a factor of 8

This is how many times George's grandpa is older than him.

As angle OAB =40-degree, angle AOB is 100 degrees according to the properties of circle and triangle.

Some Properties of circle are distance from center of the circle to each point on the circumstances are equal. hence, OA=OB

Diameter is twice of radius.

The triangle having two equal side length is called isosceles triangle. In the figure, triangle OAB is an isosceles as OA=OB=radius

According to the criteria of isosceles triangle angle OAB =OBA =40°

hence, angle AOB= 180 degrees - (40°+40°) [angle sum of triangle =180°]

                  angle AOB= 100 degrees.

We get, AOB = 100 degrees

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Answer:

3

Step-by-step explanation:

Answer:

152

Step-by-step explanation:

Multiply 19 and 8

Question 13.

The estimated monthly cost of an energy-efficient refrigerator is $57, meaning the yearly cost is

Question 14.

The least energy-efficient refrigerator costs $72 per month, meaning the annual cost is

Therefore, the amount you will save on an energy-efficient refrigerator be

Hence, the amount saved on an energy-efficient refrigerator will be $180.

Therefore, the shortest possible length for the service road is approximately 4.37 miles, rounded to the nearest hundredth.

Let's label the vertices of the right triangle as A, B, and C, with A being the airport, B being the factory, and C being the shopping center. We can also label the intersection of the highways that connect A and B as D.

Since we have a right triangle, we can use the Pythagorean theorem to find the length of the hypotenuse AC:

\(AC^2 = AB^2 + BC^2\)

\(AC^2 = 6^2 + 4.8^2\)

\(AC^2 = 36 + 23.04\)

\(AC^2 = 59.04\)

\(AC = \sqrt(59.04)\)

\(AC = 7.68\)

To find DE, we need to first find the length of BD. We can do this by using the Law of Cosines:

\(BD^2 = AB^2 + AD^2 - 2ABADcos(A)\)

\(BD^2 = 6^2 + 3.6^2 - 263.6cos(90)\)

\(BD^2 = 36 + 12.96\)

\(BD^2 = 48.96\)

\(BD =\sqrt(48.96)\)

\(BD = 6.99\)

Now we can use the Law of Sines to find the length of DE:

\(DE/BC = BD/AC\)

\(DE = BCBD/AC\)

\(DE = 4.86.99/7.68\)

\(DE = 4.37\)

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The probability of getting at least one head is 15/16.

What is probability?

The ratio of positive outcomes to all possible outcomes of an event is known as the probability.

Formula for probability = favourable outcomes/ total outcomes

Main body:

if 4 coins are tossed , total no. of outcomes = 2⁴ = 16

In a toss there are 2 outcomes T or H

so, Probability of getting Head = 1/2

The probability of getting at least 1 head = 1- probability of getting no heads

⇒1 - Probability of getting tail in 4 tosses

⇒ 1 - (1/2)⁴

⇒ 1 - 1/16

⇒ 15/16

So the probability of getting at least one head is 15/16.

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There are 8 third-order partial derivatives for a function f(x, y). They are:

1. ∂³f/∂x³ - third derivative with respect to x
2. ∂³f/∂x²∂y - mixed derivative with two x's and one y
3. ∂³f/∂x∂y² - mixed derivative with one x and two y's
4. ∂³f/∂y³ - third derivative with respect to y
5. ∂³f/∂x∂y∂x - mixed derivative with x, y, and x
6. ∂³f/∂y∂x∂y - mixed derivative with y, x, and y
7. ∂³f/∂x∂y∂y - mixed derivative with x, y, and y (equivalent to 3)
8. ∂³f/∂y∂x∂x - mixed derivative with y, x, and x (equivalent to 2)

We have 8 third-order partial derivatives because there are two variables (x and y), and we can take the derivative up to three times with respect to either variable or a combination of both. This results in different ways to distribute the three derivative operations among the two variables (x and y), leading to the 8 combinations mentioned above. Note that some of these derivatives are equivalent due to the symmetry of mixed derivatives when the function f(x, y) has continuous second-order partial derivatives.

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Through hypothesis testing, it can be explained that Type I error occurs when the allergist determines that the percentage of the population who are allergic to some cheese products is at least 30% when it is actually less than 30%. Similarly, Type II error occurs when the allergist assumes that the percentage of the population who are allergic to certain cheese products is less than 30% when it is actually at least 30%

There are two possible outcomes for hypothesis testing, which leads to two different sorts of conclusion-related errors. This is due to the possibility that the estimated value of the measure and the inference made about the population measure from the samples could diverge.

Let's say an allergist wants to investigate the claim that at least 30% of the population has a cheese allergy.

Let p represent the actual percentage of the population that were allergic to certain cheese products.

The following is how the hypotheses are put forth:

\(H_{0}:p < 0.3\\H_{a}:p\geq 0.3\)

The two types of errors that can be committed by the allergist can be described as below:

(a) Type I error:

When the null hypothesis is assumed to be true when it is actually false, type I error arises.

When an allergist determines that the percentage of the population who are allergic to some cheese products is at least 30% when it is actually less than 30%, type I mistake has been committed.

(b) Type II error:

When the null hypothesis is unsuccessfully rejected even when it is false, type II error has occurred.

When an allergist assumes that the percentage of the population who are allergic to certain cheese products is less than 30% when it is actually at least 30%, type II error has occurred.

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