this is pretty easy to most people its just that ive never studied this (open attachment) im in year 7

Answer:

6

Step-by-step explanation:

Got it correct on deltamath

Answer:

D

Step-by-step explanation:

I think that it would be d

Answer:

Step-by-step explanation:

hope it helps..........

Answer:

the first one

Step-by-step explanation: it worked for me i passed it

Answer: A. mB = 24.8ᴼ

Step-by-step explanation:

A and B are complementary angles, which means they add to equal 90ᴼ.

To find mB, subtract mA from 90

90 - 65.2 = 24.8

The solution of the equations is x = 7 and y =- 10. The value of x and y will satisfy the given equations.

What is an equation?

A mathematical statement known as an equation is made up of two expressions joined together by the equal sign.

Given equations are  

2x + y = 4 ......(i)

3x + 2y = 1 ....(ii)

There are various methods to solve of equations.

To solve the equations, use the elimination method:

Multiply equation (i) by 2 and then subtract it from (ii):

3x + 2y = 1

4x + 2y = 8

(-)  (-)       (-)

_________

-x           = -7

x = 7

Putting x = 7  in equation (i):

2×7 + y = 4

14 + y = 4

y = 4 - 14

y = -10

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Answer:  The correct answer is (3x+1)(x-4)

Step-by-step explanation:

(3x+1)(x-4)

3x(x-4)            +               1(x-4)

3x^2 - 12x       +                  x-4

3x^2 - (12x + x)-4            

3x^2 - 11 x - 4  

When the water flows through the sprinkler nozzle, it speeds up, creating a low-pressure area that sucks water up from the supply pipe and distributes it over the lawn.

Archimedes' principle, Pascal, and Bernoulli's principle have been proved to be the most fundamental principles of physics. Here is a detailed explanation of the similarities and differences between the three and three examples of daily life for each of the principles:

Archimedes' principle: This principle of physics refers to an object’s buoyancy. It states that the upward buoyant force that is exerted on an object that is submerged in a liquid is equal to the weight of the liquid that is displaced by the object.
It is used to determine the buoyancy of an object in a fluid.
It is applicable in a fluid or liquid medium.
Differences:
It concerns only fluids and not gases.
It only concerns the buoyancy of objects.

Examples of daily life for Archimedes' principle:

Swimming: Swimming is an excellent example of this principle in action. When you swim, you’re supported by the water, which applies a buoyant force to keep you afloat.
Balloons: Balloons are another example. The helium gas in the balloon is lighter than the air outside the balloon, so the balloon is lifted up and away from the ground.
Ships: When a ship is afloat, it displaces a volume of water that weighs the same as the weight of the ship.

Pascal's principle:
Pascal's principle states that when there is a pressure change in a confined fluid, that change is transmitted uniformly throughout the fluid and in all directions.
It deals with the change in pressure in a confined fluid.
It is applicable to both liquids and gases.
Differences:
It doesn’t deal with the change of pressure in the open atmosphere or a vacuum.
It applies to all fluids, including liquids and gases.

Examples of daily life for Pascal's principle:

Hydraulic lifts: Hydraulic lifts are used to lift heavy loads, such as vehicles, and are an excellent example of Pascal's principle in action. The force applied to the small piston is transmitted through the fluid to the larger piston, which produces a greater force.
Syringes: Syringes are used to administer medicines to patients and are also an example of Pascal's principle in action.
Brakes: The braking system of a vehicle is another example of Pascal's principle in action. When the brake pedal is depressed, it applies pressure to the fluid, which is transmitted to the brake calipers and pads.

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Answer:

move 6 places right (1kg=10^6mg=1,000,000mg)

Step-by-step explanation:

ex:

1kg= 1,000,000mg

39kg=39,000,000

4.2kg=4,200,000

The evaluated probability for chances of  randomly selecting an employee who will  have a starting salary of at least $31,000 is 11.51%. Here, we have to depend on the principles of standard normal distribution to find the percentage of probability,


Let us take  z-score for a starting salary of $31,000 as

z = (31000 - 25000) / 5000
= 1.2

Now after using a standard normal distribution table , the probability of a z-score of 1.2 or greater is approximately 0.1151
Converting it into percentage
0.1151 x 100
= 11.51%
The evaluated probability for chances of  randomly selecting an employee who will  have a starting salary of at least $31,000 is 11.51%.

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Answer:

3 gallons of paint

Step-by-step explanation:

We know

1/3 gallon of paint is used to cover 1/9 of the fence. How much paint will cover the entire fence?

We take

1/3 x 9 = 9/3 = 3 gallons of paint

So, it takes 3 gallons of paint to cover the entire fence.

The slope in a least-squares regression line of the form y = a bx is equal to the coefficient b. This coefficient represents the rate of change in the dependent variable (y) for every one unit increase in the independent variable (x).

Specifically, it represents the change in y divided by the change in x, as b is calculated as the covariance between x and y divided by the variance of x.

This slope is important in understanding the relationship between the variables being studied and can help to make predictions about future values of the dependent variable based on changes in the independent variable.

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Answer:

\((0,-1)\)

Step-by-step explanation:

\((x^{2} -x^{1} )(y^{2} -y^{1} )\)- the formula

\((-1 - -1) = 0\)

\((-8 - -7) =-1\)

So, the answer is:

\((0,-1)\)

or

\(0=-1\)

  ^

this is the swiggly line

Answer:

2

Step-by-step explanation:

27 = 54,

let's say the value that will make it true is x

So then,

27 * x = 54. If we divide both sides by 27, we have

x = 54 / 27

x = 2

The value that will make it true is multiplying 27 by 2

Answer:

B. 81 in.²

Step-by-step explanation:

We have been given that the trapezoid shown in the attachment has been enlarged by a scale of 1.5. We are asked to find the area of the enlarged trapezoid.

The area of the original trapezoid is 36 square inches.

Since each side of the trapezoid is enlarged 1.5 times, so the area of new trapezoid would be 2.25 times greater than area of original trapezoid.

The area would be 2.25 times greater because area is product of sum of lengths of parallel sides and height.

1.5 × 1.5 = 2.25

Area of new trapezoid: 2.25 × 36 in²

Area of new trapezoid = 81 in²

The area of the enlarged trapezoid would be 81 in² or option B.

Answer:

The Answer is A. 8

Explanation:

For Answer Choice A:

There's nothing to explain here. It's just the number 8.

For Answer Choice B:

2 · 2 · 2 · 2 is 16. That symbol ( · ) is another way of writing the multiplication symbol. So this problem is essentially 2 x 2 x 2 x 2, which equals 16.

For Answer Choice C:

Well, this one needs no explanation either. It's just the number 16.

For Answer Choice D:

\(2^{4}\) is also equal to 16. I'm too lazy to explain how to do this one so yea.  

Hope this helps you. Uh, yea. Have a good day? omg I'm so tired

Answer:

B is your correct answer

Step-by-step explanation:

The image of point A on the graph of f⁻¹(x) has coordinates (x, y) = (3, 2).

The inverse of a function is a new function that "undoes" the original function. More formally, if a function f maps elements of a set X to elements of a set Y, and if there is a function g that maps elements of Y back to elements of X such that g(f(x)) = x for all x in X, then g is called the inverse of f.

First, we need to find the inverse of f(x) = 1/2x + 2. We can do this by switching x and y and solving for y:

x = 1/2y + 2

x - 2 = 1/2y

2x - 4 = y

So, the inverse function is f⁻¹(x) = 2x - 4.

Now, we can use the coordinates of point Ato find its image on the graph of f⁻¹(x).

Point A has coordinates (x, y) = (0, 2) since it lies on the graph of f(x) = 1/2x + 2. We want to find the image of this point on the graph of f⁻¹(x) = 2x - 4.

We can start by plugging in y = 2 into the equation for f⁻¹(x):

y = 2x - 4

2 = 2x - 4

6 = 2x

x = 3

So, the image of point A on the graph of f⁻¹(x) has coordinates (x, y) = (3, 2).

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Answer:

4.2 miles

Step-by-step explanation:

1 2/5 = 7/5

7/5*3/1 = 21/5

221/5 = 4 1/5 = 4.2

i. c b a

ii. e d f

iii. h i g

hope this helps

now give me your brain lol

Answer:

1. (<A) > (<B) > (<C)

2. (<F) > (<D) > (<E)

3. (<H) > (<I) > (<G)

Step-by-step explanation:

The sides-angles theorem in a triangle states that the largest angle in a triangle will be opposite the largest side. One can apply this to the given set of triangles:

(1)

CB > AC > AB

4.4 > 3.1 > 2.7

(<A) > (<B) > (<C)

(2)

DE > FE > DF

(x) > (x-3) > (x-5)

(<F) > (<D) > (<E)

(3)

GI > GH > HI

(21x) > (14x) > (13x)

(<H) > (<I) > (<G)

Answer:

y=x/4+17/4

Step-by-step explanation:

(y-4)/(x+1)=1/4

4y-16=x+1

4y=x+17

y=x/4+17/4

In order to prove that P is the circumcenter of HJK, we need the following conditions:

We'll need to demonstrate that P lies on the perpendicular bisectors of the sides of triangle HJK.

For triangle HJK, we'll have to show that all three perpendicular bisectors intersect at point P.

Let us see the explanation below:

The circumcenter of a triangle is the point where the perpendicular bisectors of the sides of the triangle intersect.

Thus, we must demonstrate that P lies on the perpendicular bisectors of the sides of triangle HJK and that all three perpendicular bisectors intersect at point P.

To be more precise, if we can demonstrate that P is equidistant from each vertex of triangle HJK, we can show that P is the circumcenter of triangle HJK.

This is because the circumcenter of a triangle is the point equidistant from each vertex of the triangle.

Let's look at some visual aids to see why this is true:

Image Transcription:Image Explanation:

In triangle HJK, we want to show that P is the circumcenter.

To do so, we must show that P is equidistant from each vertex of triangle HJK.

We do this by showing that P is on the perpendicular bisectors of all three sides of triangle HJK.

If P is on the perpendicular bisectors of all three sides of triangle HJK, it is equidistant from each vertex of triangle HJK.

In triangle ABC, the perpendicular bisectors of AB and AC intersect at point P.

We can see that P is equidistant from each vertex of triangle ABC.

To find the perpendicular bisector of a segment, we take the segment's midpoint and construct a line perpendicular to the segment that passes through the midpoint.

As a result, we must show that P is the midpoint of each of the three sides of triangle HJK, which will ensure that P lies on the perpendicular bisectors of all three sides of triangle HJK.

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To estimate the regression in the given model Yi = B0 + B1Xi + B2Ziui, where the variance of Ui is Σi^2 = Σ(zi^2), you can use the method of weighted least squares (WLS). The weights for each observation can be determined by the inverse of the variance of Ui, that is, wi = 1/zi^2.

In the given model, Yi = B0 + B1Xi + B2Ziui, the error term Ui is assumed to have a constant variance, given by Σi^2 = Σ(zi^2), where zi represents the individual values of Z.

To estimate the regression coefficients B0, B1, and B2, you can use the weighted least squares (WLS) method. WLS is an extension of the ordinary least squares (OLS) method that accounts for heteroscedasticity in the error term.

In WLS, you assign weights to each observation based on the inverse of its variance. In this case, the weight for each observation i would be wi = 1/zi^2, where zi^2 represents the variance of Ui for that particular observation.

By assigning higher weights to observations with smaller variance, WLS gives more importance to those observations that are more precise and have smaller errors. This weighting scheme helps in obtaining more efficient and unbiased estimates of the regression coefficients.

Once you have calculated the weights for each observation, you can use the WLS method to estimate the regression coefficients B0, B1, and B2 by minimizing the weighted sum of squared residuals. This involves finding the values of B0, B1, and B2 that minimize the expression Σ[wi * (Yi - B0 - B1Xi - B2Ziui)^2].

By using the weights derived from the inverse of the variance of Ui, WLS allows you to estimate the regression in the presence of heteroscedasticity, leading to more accurate and robust results.

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Answer: C. Interest

Step-by-step explanation: just took the quiz.

I stand for Interest in PITI.

Interest is the price you pay to borrow money or the cost you charge to lend money.

Interest is most often reflected as an annual percentage of the amount of a loan.

Capital, interest, taxes and insurance, known as PITI (for its acronym), are the four basic elements of a monthly mortgage payment.

Capital and interest payments are used to pay the loan. The amount covered by the property tax and home insurance can be deposited in an escrow account or escrow account, if you are required to have one or have decided to open it, in order to cover the payments of such property taxes and homeowners insurance. housing as they expire.

Hence, I stand for Interest in PITI.

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The length of the median of the trapezoid ABCD is  12 .

In the question ,

it is given that ,

the area of the trapezoid ABCD is = 60 ,

the height of the trapezoid ABCD is = 5 ,

let one base of the trapezoid ABCD be = a ,

So, b = a + 4 ,

Substituting the value in the formula for Area of the trapezoid = A =(a+b)h/2

(a + a + 4)5/2 = 60

(2a + 4)5 = 120

2a + 4 = 120/5

2a + 4 = 24

2a = 24 - 4

2a = 20

a = 20/2

a = 10 units

and other base = 10 + 4 = 14 units

So , the length of the median will be = (10 + 14)/2

= 24/2 = 12 units

Therefore , the length of median is = 12  .

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Answer:

13.5 pounds.

Step-by-step explanation:

9.18 divided by .68

= 13.5

Answer:

13.5

$0.68 times 13.5 = $9.18

Answer:

(11,11)

Step-by-step explanation:

Moving 5 units to the right means add 5 to x

Moving 4 units up means add 4 to y

(6+5, 7+4)

(11,11)

Answer:

1/3n=12

Step-by-step explanation:

The reason why it is 1/3n=12, is because you know that the number in front of n is 1/3. By figuring that out, you have already ruled out 3n=12 and 3n=-12. Finally, you know that 12 is a positive number leaving you with 1/3n=12.

Answer:

-3/2

Step-by-step explanation: