Help a kid out :

\( \quad \sf \: 4x + 3 = 7\)



solve for x ​

Based on the data in the table, the following statements are true:

Students who prefer to use a touchpad are less likely to be eighth graders. This statement is true because 20% of eighth graders prefer to use a touchpad, while 25% of seventh graders prefer to use a touchpad. This means that there is a higher percentage of seventh graders who prefer to use a touchpad than eighth graders.

There is an association between a student's grade level and computer preference. This statement is true because the data shows that there is a clear relationship between a student's grade level and their preference for a mouse or touchpad. For example, 25% of seventh graders prefer to use a mouse, while only 20% of eighth graders prefer to use a mouse.

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The real number √21 is an example of an irrational number. (Correct choice: C)

According to number theory, real numbers are formed by the following sets:

Then, by direct inspection we get the following conclusions:

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Answer:

just divide 1/5 by 100 and you should get it

Step-by-step explanation:

The counterclockwise circulation around c is 12 and the outward flux through c is zero.

Green's theorem is a useful tool for calculating the circulation and flux of a vector field around a closed curve in two-dimensional space.

In this case,

we have a field f=(7x−4y)i+(9y−4x)j and

a square curve c bounded by x=0, x=4, y=0, y=4.

To find the counterclockwise circulation, we can use the line integral of f along c, which is equal to the double integral of the curl of f over the region enclosed by c.

The curl of f is given by (0,0,3), so the line integral evaluates to 12.

To find the outward flux, we can use the double integral of the divergence of f over the same region, which is equal to zero since the divergence of f is also zero.

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Answer:

just do what it says

Step-by-step explanation:

Answer:

10 hours

Step-by-step explanation:

We can convert the speed to km/h, and to do this, you simply have to find the amount Kevin rides in 1 hour. So,

24/2 = x/1

x = 12

So, now we see that Kevin rides at approximately 12 kmph. Now, instead of finding the distance, we need to find the hour at 120 km.

12/1 = 120/x

x = 10

Answer:

(1/6)

Step-by-step explanation:

ℎ 1/6

The first term, a1, in the geometric series is -3.

What is Geometric Series?

A geometric series is a series for which the ratio of two consecutive terms is a constant function of the summation index. The more general case of a ratio and a rational sum-index function produces a series called a hypergeometric series. For the simplest case of a ratio equal to a constant, the terms have the form

To find the first term, a1, in a geometric series given the sum, Sn = 93, the common ratio, r = 2, and the number of terms, n = 5, we can use the formula for the sum of a geometric series:

Sn = a1 * (1 - r^n) / (1 - r)

Plugging in the given values, we have:

93 = a1 * (1 - 2^5) / (1 - 2)

Simplifying the expression:

93 = a1 * (1 - 32) / (-1)

93 = a1 * (-31)

Now we can solve for a1 by dividing both sides of the equation by -31:

a1 = 93 / -31

a1 = -3

Therefore, the first term, a1, in the geometric series is -3.

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Answer: 2/5 feet

Step-by-step explanation:

From the question, we are informed that Marty and Adam want to share 8/10 feet of rope, equally.

The amount of rope that each person would get would be calculated by dividing 8/10 by 2. This will be:

= 8/10 ÷ 2

= 8/10 × 1/2

= 8/20

= 2/5

Therefore, each person gets 2/5 feet of rope.

Answer:

x + 125 = 2250 OR x = 2250 - 125

Step-by-step explanation:

Where x is the amount of money you have in your savings account. To solve for x, you can subtract 125 from both sides:

x = 2250 - 125

x = 2125

Therefore, you have $2125 in your savings account.

Hope this helps :)

Answer:

18ft

Step-by-step explanation:

AC = CD = BA

CD = 2CE

BD = BA + AC + CD = 2CE + 2CE + 2CE

= 6CE

CE = 3

6 × 3 = 18

The sum of the infinite geometric series –288 –216 –144 –72 is -1152.

The sum of an infinite number of terms having a constant ratio between successive terms is called as infinite geometric series.

Given series, -288, -216, -144, -72, ...

The sum of the infinite geometric series can be calculated as:

Sum = \(\dfrac{a}{1 -r}\)

Here, 'a' is the first term of the series and 'r' is the common ratio.

a = -288

The common difference can be calculated as:

r = \(\dfrac{(-216)}{(-288)}\)

= \(\dfrac{3}{4}\)

Substitute the values in the sum formula:

Sum = \(\dfrac{-288}{1 - \dfrac{3}{4}}\)

It can be simplified as:

Sum =  -288 \(\times\) 4

             = -1152

So, the sum of the infinite geometric series is -1152.

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Answer:

I need the whole question plz.

Step-by-step explanation:

x=1 y=7

x=2 y=12

etc.

Answer:

y₂ = 3

Step-by-step explanation:

Calculate the slope m using the slope formula and equate to - \(\frac{3}{4}\)

m = \(\frac{y_{2}-y_{1} }{x_{2}-x_{1} }\)

with (x₁, y₁ ) = (7, - 6) and (x₂, y₂ ) = (- 5, y₂ )

m = \(\frac{y_{2}+6 }{-5-7}\) , that is

\(\frac{y_{2}+6 }{-12}\) = - \(\frac{3}{4}\) ( cross- multiply )

4(y₂ + 6) = 36 ( divide both sides by 4 )

y₂ + 6 = 9 ( subtract 6 from both sides )

y₂ = 3

Answer:

So the probability of this happening is exactly 1 - it must be true

Step-by-step explanation:

If we calculate modulo(5) for each of the six numbers (the integer remainder after dividing by 5), we will get six values from 0 to 4.

By the pigeonhole principle, since there are 6 numbers and only 5 possible values, at least two must share the same value modulo 5. Pick two of those, say x and y, in which case x mod 5 = y mod 5, therefore (x - y) mod 5 = 0. In other words, their difference is a multiple of 5.

So the probability of this happening is exactly 1 - it must be true

The estimated cost if they use a contractor to complete the house would be $435,000.

The cost of the house is based on what home builders typically charge for a house similar to the one Mrs. Pavlinski and her husband Zander have in mind.

In this case, the contractor's price is $150 per square foot of her home while the area of the house is given as 2,900 square feet.

Total cost = Cost per square feet x Area of house

Solving for the estimated cost gives:

= 150 x 2,900

= $435,000

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The given question is incomplete and the complete question is as follows.

"Mrs. Publinsky and her husband, Xander are planning their dream house. The lot for the house sits high on a hill with a beautiful view of the White Mountains. The plans show the size of the house to be 2,900 sq ft. The average price for a lot and house similar to this one has been 150 per sq ft. Fortunately, Xander is a retired plumber and feels he can save money by installing the plumbing himself. Mrs Publinsky feels she can take care of the interior decorating. They both feel they can complete the exterior painting with the help of their two sons."

Answer:

A, D, and E.

Step-by-step explanation:

Sorry if wrong but im pretty sure. you flip the second fraction so it becomes a three. the divide bacomes a multiply so that should be correct

He can say that The expression that should be equivalent to −56−13 is option b.

Since the expression is -56-13

So if we add together so it comes like

= -56 + -13

= -56 - 13

= -69

Now based on the options, if we considered option b

i.e.

= -65 -3

= -69

Therefore, the option b is correct.

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Answer:

Let y = length of side parallel to the side with no fence

x = length of each of the other two sides

Then, y+2x = 64. So, y = 64-2x

Area = A = xy = x(64-2x)

The graph of the area function is a parabola opening downward with a highest point and with x-intercepts (0,0) and (32,0).

By the symmetry of the parabola, the x-coordinate of the maximum point lies halfway between the x-intercepts.

So, the area is maximized when x = 16 ft

y = 64 - 2x = 32 ft

Maximum area = xy = (16)(32) = 512 ft2

To maximize the area of the garden, the side of the fence parallel to the side of the house should be 32 ft long, and the other two sides should both have length 16 ft.

Answer:

See attached figure.

Step-by-step explanation:

Figure drawn as per instructions, not to scale, using geogebra as requested.

Distance measurements are arbitrary since distance of satellite to earth and not given.  As drawn, it is around 4800 mi, which seems way too high.

Enjoy, and have a nice day!

Answer:

All answers are bold and links are real photos  

BTW THE PHOTOS ARE IN ORDER OF THE ANSWERS

Brainlyist??

Step-by-step explanation:

Task 1

Part A

Tangent Line

Part B

PHOTO WITH LARGE CIRCLE AND LINE OUT SIDE BUT CONNECTED

Part C

2034.7

PHOTO WITH EQUATION

We calculate the point from the center of the earth to the satellite and because we have the radius we can subtract it getting the distance from the satellite to the earth.

Task 2

Gears

Part A

Approximately 10.47 inches

Part B

300 DEGREES

Part C

Approximately 125.66 inches

Part D

The distance traveled increases by approximately 62.83 inches

Task 3

Circle Theorems

Part A

PHOTO WITH LINE THROUGH CIRCLE AND ONE 90 DEGREE ANGLE

Part B

Prove OC is perpendicular to AB

We know that ΔAEC≅AED by SSS criteria (SSS criteria is when all three sides of a triangle is equal making them congruent)

To prove this that they apply to the SSS criteria: m∠ADO=m∠BDO m∠ADO=90°=m∠BDO

Part C

A radius is perpendicular to a chord when the chord is equally divided in half by the radius.

PHOTO OF LINE THROUGH CIRCLE AND LINE DISTANCES

Part D

Prove OC is perpendicular to AB

AO=BO because AO and BO are both radii

OD≅OD by reflexive theorem

ΔADO≅ΔBDO because they are both right triangle with the hypotenuse and a side

AB≅BC means that OC is perpendicular to AB

Answer:

my answer is A

Step-by-step explanation:

if you work out the equation where you know that at the x intercept y=0 you will find A to be true

The Mean Absolute Deviation (MAD) of these forecasts is 2.75.

Mean Absolute Deviation (MAD) of forecasts is calculated using the formula: MAD = Σ|F-A|/n where, F is the forecast, A is the actual sales and n is the number of periods in the time series. Using the formula: MAD = Σ|F - A|/nFirst, we need to find the values of F-A which are:

|15-18| = 3|18-20| = 2|20-25| = 5|31-30| = 1.

Then, we find the sum of the absolute deviation:3+2+5+1 = 11Next, we divide the sum of the absolute deviation by the number of periods in the time series which is 4.Thus, MAD = 11/4 = 2.75.Therefore, the Mean Absolute Deviation (MAD) of these forecasts is 2.75.

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If the car goes to the top of spike's peak and back, the mileage of the car is 16 miles per gallon

The mileage of car in uphill = 12 miles per gallon

The mileage of car in downhill = 24  miles per gallon

The total distance traveled in up hill = 48 miles

The number of gallon of gas used = 48/12

= 4 gallon

The total distance traveled in down hill = 48 miles

The number of gallon of gas used = 48 / 24

= 2 gallon

Total distance traveled = 48 + 48

= 96 miles

Total number of gallons of gas = 4 + 2

= 6 gallon

The mileage = Total distance / The number of gallon

= 96 / 6

= 16 miles per gallon

Therefore, the mileage of the car is 16 miles per gallon

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C. The statement is false. It is the sum of the squares of all the residuals that is minimized.

In the context of least squares, the goal is to minimize the sum of the squares of the residuals, not the square of the largest residual alone. The residuals are the differences between the observed values and the corresponding predicted values obtained from a regression model.

By minimizing the sum of the squares of the residuals, the least squares method ensures that all residuals contribute to the overall measure of fit, rather than just focusing on the largest residual. This approach provides a balanced and comprehensive assessment of the overall goodness of fit between the model and the observed data.

Therefore, the statement that the square of the largest residual is as small as it could possibly be is false. The least squares method aims to minimize the sum of the squares of all the residuals, leading to the best overall fit between the model and the data.

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The two numbers for multiplying give -7 and adding gives -6 are 1 and -7.

What is multiplication expression?

Finding the numerator of the first and second fractions as well as the product of the denominator is required when multiplying two fractions. In other words, the product of the numerators/product of the denominators of two rational numbers equals the multiplication of those two integers.

Here, we have

Given:  

The multiply of two numbers = - 7

And, the addition of two numbers = -6

Now,

Let the first number = -x

And, the second number = 6y

So, We can formulate;

xy = -6

And, x + y = -6   ... (i)

Since we know that;

(x - y)² = (x + y)² - 4xy

Substitute all the values, we get;

(x - y)² = (-6)² - 4 × (- 7)

(x - y)² = 36 + 28

(x - y)² = 64

(x - y) = 8   .. (ii)

Solve equations (i) and (ii), and we get;

x = 1 and y = -7

Hence, The two numbers for multiplying give -7 and adding gives -6 are 1 and -7.

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The statement that is true about Scientific process and method is the scientific process is a continuous process of collecting data and refining hypothesis.  

Studies and researches are done by a scientific method which follows certain standards and protocols. The method starts with an observation, a question is asked why it happens and formulating a hypothesis. Either we can do a controlled experiment to test whether the hypothesis is correct or not, or we can do a non-experimental hypothesis, where experimenting will not be ethical.

The scientific process is a continuous process, which need to be collecting data and refining hypothesis. Even our data support hypothesis, the data might not be true in some cases. So work on a scientific concept is never complete. Even if we have data on causes and effects of a natural phenomena, we could not necessarily predict it every time, example: earthquake. Also, while collecting data, we should be fair in its treatment. We can't take data that only support our hypothesis.

So, the correct statement is option c. Scientific process is a continuous process of collecting data and refining hypotheses.

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Answer:

19 points

Step-by-step explanation:

Let's make the fourth round x.

To find the average, we can use the mean. The mean is all the numbers added up then divided by the total amount of numbers.

18 + 12 + 15 + x ÷ 4 = 16

45 + x ÷ 4 = 16

45 + x = 16 × 4

45 + x = 64

x = 64 - 45

x = 19

Jennifer has to score 19 points to have an average (mean) of 16 points.

Answer:

just know so please give me a good rating

The equations of the asymptotes of the given hyperbola are; y = ±(40/9)x

We are given;

Vertex at (0,−40)

Focus at (0, 41).

Thus, the equation of the asymptote of the given hyperbola is;

y = ±(40/(√41 - (-40))

y = ±(40/(√81)

y = ±40/9

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Susanna has received a type of federal aid called a grant. Grants are financial assistance provided by the government or other organizations to help individuals pay for their education.

Susanna has been awarded a grant. A grant is a form of financial aid that is given to students who demonstrate financial need, academic achievement, or other eligibility criteria. Unlike loans, grants do not have to be repaid and are essentially free money. Grants can come from various sources, including the federal government, state government, or private organizations.

In Susanna's case, the federal government has awarded her aid that does not have to be repaid. This could be in the form of a Pell Grant, which is awarded to undergraduate students who demonstrate financial need. Pell Grants are the most common type of federal grant, but there are other types of federal grants available as well, such as the Federal Supplemental Educational Opportunity Grant (FSEOG) and the Teacher Education Assistance for College and Higher Education (TEACH) Grant.

Overall, receiving a grant is a great way for students to finance their education without having to worry about the burden of repayment.

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