Rafael is on his way home in his car. His drive is 22 miles long. He has finished one-half of the drive so far, how far has he driven

The answer is T(n)=5(n-1)+n+1

because = T(4)=5(4-1)+4+1

              =T4=5(3)+5

              =T4=15+5

              =T4=20

this took me half an hour

Answer:

{(-2,3), (7,-6) } -----> y - 15 = -[tex]x^{2}[/tex] + 4x

                               x + y = 1

{(-5, 8). (3,0) } ----> y + 12 = [tex]x^{2}[/tex] + x

                              x + y = 3

{(-2,5),(3,-5) } -----> y + 5 = [tex]x^{2}[/tex]  - 3x

                               2x + y = 1

{(2, 3), (8,9)} -----> y-17 = [tex]x^{2}[/tex] - 9x

                              -x + y = 1

Step-by-step explanation:

The simplest way to find the answer is by solving all the equations and finding the value of x and y for each of them.

Solving the equations ->

y + 12 = [tex]x^{2}[/tex]  + x

x + y = 3

Substitute y = 3-x from second equation to first and solving the quadratic equation obtained i.e solving [tex]x^{2}[/tex] + 2x -15 = 0 , we get values of x = -5 , 3 and the corresponding values of y by substituting values of x in second equation , y = 8, 0 respectively. So, solution matched  = {(-5, 8). (3,0) }.

Similarly solving other equations using exactly the same method as above we get the following solutions,

For,

y - 15 = [tex]x^{2}[/tex] + 4x

x - y = 1

we don't get any integer solution for this hence it has no match.

For,

y + 5 = [tex]x^{2}[/tex] - 3x

2x + y = 1

we get x = 3,-2 and corresponding y = -5,5

So, solution is {(-2,5),(3,-5) }

For,

y- 6 = [tex]x^{2}[/tex] – 3x

x + 2y = 2

we again don't get any integer solution for x and y so this has no match.

For,

y-17 = [tex]x^{2}[/tex] - 9x

-x + y = 1

we get x = 2,8 and corresponding y = 3,9

So, {(2, 3), (8,9)} is the solution match.

Lastly for,

y - 15 = -[tex]x^{2}[/tex] + 4x

x + y = 1

we get x = -2,7 and corresponding y = 3,6

So, {(-2,3), (7,-6)} is the solution match.

Solving for x...

4(x-3)=-8

Divide by 4.

x-3=-2

Add 3.

x=1

Answer: x = +1

Step-by-step explanation: To solve for x in this equation, our first step is to simplify the left side by distributing the 4 through both terms inside the parentheses.

When we do that, we get 4 times x which is 4x and 4 times -3 which is -12. So we have 4x - 12 = -8. Our next step is to isolate the x-term by adding 12 to both sides of the equation. On the left, -12 + 12 cancels and we are left with 4x. On the right, -8 + 12 simplifies to 4.

Now we have the equation 4x = 4.

To get x by itself, we divide both sides by 4 and x = +1.

The 82nd term of the arithmetic sequence -8, 9, 26 can be solved using the arithmetic sequence formula, which results in the 82nd term being 1369.

The subject of this question is related to finding the 82nd term of the arithmetic sequence -8, 9, 26. Arithmetic sequences follow a pattern of adding a consistent value, this consistent value is called the common difference. From the given sequence, the common difference (d) can be calculated by subtracting the first term from the second term, or the second from the third, and so on. So d = 9 - (-8) = 17 or 26 - 9 = 17.

The formula for finding the nth term of an arithmetic sequence is a_n = a_1 + (n - 1) * d. Here, a_1 is the first term of the sequence and n is the term number we're interested in.

Thus, the 82nd term of the sequence can be found by substituting the values into the formula: a_82 = -8 + (82 - 1) * 17 = 1369. So, the 82nd term of the given arithmetic sequence is 1369.

https://brainly.com/question/35880655

#SPJ12

The [tex]82^{nd}[/tex] term of the arithmetic sequence -8, 9, 26, ..., is 1369.

An arithmetic sequence is a sequence of numbers in which the difference between consecutive terms is constant. This difference is known as the common difference (d).

⇒ aₙ = a₁ + (n - 1) × d

where a₁ is the first term, n is the term number, and d is the common difference.

⇒ a₁ = -8.

⇒ d = 9 - (-8) = 17.

⇒ n = 82

⇒ a₈₂ = -8 + (82 - 1) × 17

⇒ a₈₂ = -8 + 81 × 17

⇒ a₈₂ = -8 + 1377

⇒ a₈₂ = 1369

Therefore, the [tex]82^{nd}[/tex] term of the sequence is 1369.

Complete question:

Find [tex]82^{nd}[/tex] term of the arithmetic sequence -8, 9, 26, ....

Answer:

Each golf ball costs about $2.

Step-by-step explanation:

Given:

Donald bought a box of golf balls for $9.27. There were 18 golf balls in the box.

Rename the decimal dividend as a whole number that is  compatible with the divisor to estimate the quotient.

Now, to find the cost of each golf ball.

As given:

Rename the decimal dividend as a whole number that is  compatible with the divisor to estimate the quotient.

As, the cost of golf ball box = $9.27.

So, 9.27 nearest to whole number is 9.

Thus to get the cost of each ball:

18 golf balls cost = $9.

So, 1 golf ball cost = [tex]18\div 9=2.[/tex]

Therefore, each golf ball costs about $2.                          

Answer:

Step-by-step explanation:

The value of the expression is [tex]\frac{75}{5} - [(9 - 7) \times 3]\times 2 = 15 - 6\times2 = 15 - 12 = 3[/tex]

The formula to get the volume is [tex]length \times width \times height = 3\times 5\times 7 = 105[/tex]

[tex]\frac{8375}{45} = \frac{1675}{9} = 186.1[/tex]

Answer:

it is explained below..

Step-by-step explanation:

1. by using BODMAS rule: [ brackets of division multiplication addition subtraction] we have to do operations in this order only i.e, from brackets to subtractions.

given expression : 75[tex]\div[/tex]5-[(9-7)*3]*2

75[tex]\div[/tex]5-[(2)*3]*2

[as, 9-7=2]

75[tex]\div[/tex]5-[6]*2

[as, 2*3=6]

2. volume of rectangular prism: length*breadth*height

=7*3*5

=105

3.   8375[tex]\div[/tex]45

use conventional division method as 8375 isn't divisible by 45 directly.

after solving, answer: 186.11...

Answer:

last option

Step-by-step explanation:

imagine a number line

________________________________________________

-3               -2             -1               0              1               2                3

             |

            -2.34 would be found somewhere over there

Answer:

4 polio

56 measles

Step-by-step explanation:

Write equations to represent the problem

let x be the number of vaccinations for polio

let y be the number of vaccinations for measles

x + y = 60          Equation for vaccinations

4x + 2y = 128    Equation for doses

Solve the system using substitution. Rearrange x + y = 60 to isolate one variable.

x = 60 - y

Substitute x for 60-y in the other equation

4x + 2y = 128

4(60-y) + 2y = 128     Distribute over brackets

240 - 4y + 2y = 128    Collect like terms. They have the variable "y"

240 - 2y = 128    Subtract 240 from both sides

-2y = 128 - 240

-2y = -112    Divide both sides by -2

y = -112/-2

y = 56    Number of measles vaccinations

Substitute y for 56 in x + y = 60

x + y = 60

x + 56 = 60

x = 60 - 56

x = 4   Number of polio vaccinations

Therefore Dr. Potter gave out 4 polio vaccinations and 56 measles vaccinations.

E é usado para significar "10 à potência de". Por exemplo, 1.314E + 1 significa 1.314 * 101, que é 13.14.

Answer:

2x+7y>=10

Replace x and y with 2 and 1

2*2+7*1>=10

2*2=4

7*1=7

4+7>=10

7+4=11

2x+7y>=10 is a true statement

Because 11 is greater than 10 and it doesnt have to be equal to 10 as long as its greater.

Answer:

No. it does not

Step-by-step explanation:

(i assumed you meant 2x+7y=10)

1.) 2(2)+7y=10

2.)2(2)+7(1)=10

3.)4+7=10

4.)11=10

Answer:

The given expression represents the Associative Property of Addition.

Step-by-step explanation:

Here, the given expression is given as:

(2+3.4) + 6 = 2 + (3.4+6)

Now, for any 3 terms a, b and c the given properties in the options are described as:

1. Associative Property of Addition

(a +b) + c = a + (b + c)

2. Commutative Property of Multiplication

a x b = b x a

3. Inverse Property of Multiplication

[tex]a \times \frac{1}{a} = 1[/tex]

4. Commutative Property of Addition

a+ b = b + a

Hence, from the given expression,we can see that:

(2+3.4) + 6 = 2 + (3.4+6)

⇒(a +b) + c = a + (b + c)

Hence, the expression represents the Associative Property of Addition

Final answer:

The statement (2+3.4) + 6 = 2 + (3.4+6) demonstrates the Associative Property of Addition, indicating that the sum of a set of numbers is the same regardless of how the numbers are grouped.

Explanation:

The property illustrated by the statement (2+3.4) + 6 = 2 + (3.4+6) is the Associative Property of Addition. This property states that when adding three or more numbers, the way in which the numbers are grouped does not change the sum. For instance, as shown in the statement, (a + b) + c equals a + (b + c), which means that the groupings of the numbers can be changed without affecting the total sum. This is not to be confused with the Commutative Property of Addition, which is about the order of the numbers and states that A + B equals B + A. The commutative property tells us that we get the same result whether we add 2 + 3 or 3 + 2. However, the question explicitly deals with the grouping of numbers, not the order, thus confirming that the associative property is in use.

The question is missing the figure. So, it is attached below.

Answer:

DZ = 4 units

Step-by-step explanation:

Given:

CD || XZ

YC = 25 units, CX = 5 units, YD = 20 units.

We know that,

If CD is parallel to XZ , then the line CD divides the sides XY and YZ of the triangle XYZ proportionally. This is true by triangle proportionality theorem.

Therefore, the lengths YC, CX, YD and DZ are in proportion. This gives,

[tex]\frac{YC}{CX}=\frac{YD}{DZ}[/tex]

Rewrite in terms of DZ. This gives,

[tex]DZ=\frac{YD\times CX}{YC}[/tex]

Plug in [tex]YC=25,CX=5,YD=20[/tex]. Solve for DZ.

[tex]DZ=\frac{20\times 5}{25}\\\\DZ=\frac{100}{25}=4[/tex]

Therefore, the length of DZ is 4 units.

Answer:

4

Step-by-step explanation:

Answer:

y = 0

Step-by-step explanation:

1 c.

If we have an exponential function of the form  [tex]f(x)=a^x[/tex], where "a" is any positive integer, say, then that function will take the general shape of the function shown in the picture.

It will always approach the x-axis but never meet (touch). Any line that a function (graph) approaches but never touches, is known as an asymptote to the graph.

Since the function  [tex]f(x)=4^x[/tex]  follows the path of the general form shown above, this also approaches the x-axis, but never touches. So, the x-axis is the asymptote of the function.

We know

x-axis has equation  y = 0, and

y-axis has equation x = 0

Here, the x-axis is the asymptote, so the equation is:

y = 0

Answer:

1404.5 is your answer when you divide 8,427 by 6

Answer:

1404.5

Step-by-step explanation:

8427 divided by 6 in decimal = 1404.5

8427 divided by 6 in fraction = 8427/6

8427 divided by 6 in percentage = 140450%

Step-by-step explanation:

An integer is a number that can be written without a fractional component.

A rational number is a number that can be represented as a fraction with a non-zero denominator, and its decimal expansion is finite or infinite and repeat.

An irrational number is a real number which is not a rational number.

[tex]\bold{integer:}\\-2,\ 150\\\\\bold{rational\ but\ not\ an\ integer:}\\\\-\dfrac{1}{2},\ 6.\overline{6}\\\\\bold{irrational:}\\\\-\sqrt3[/tex]

Answer:

Step-by-step explanation:

P = 2(L + W)

P = 56

L = 12

now sub...we are looking for w

56 = 2(12 + W)

56 = 24 + 2W

56 - 24 = 2W

32 = 2W

32/2 = W

16 = W <==== the width is 16 inches

check...

P = 2(L + W)

56 = 2(12 + 16)

56 = 2(28)

56 = 56 (correct)

Answer: 14.8

Step-by-step explanation:

11.1^2 + x^2 = 18.5^2

X is 14.8

Answer:

M = (8,9)

Step-by-step explanation:

Notice that the points (0,15), and (20,0) form with the origin of coordinates (0,0),  a right angle triangle (please see attached image). This triangle has twon perpendicular sides of length 15 and 20 respectively. Therefore, we can find the length of the segment that joins points A (0,15) and B (20,0) by finding the length of the hypotenuse in a right angle triangle (with the Pythagorean Theorem):

[tex]AB=\sqrt{15^2+20^2} =\sqrt{625} =25[/tex]

Now, to get a 2:3 proportion on Segment AB which is of length 25, we need to divide it in five equal parts (see the picture on the right of the attached image), and place point M at two of these divisions from point A (0,15) and along segment AB.

In order to find the appropriate location in (x,y) coordinates, we consider a smaller triangle (pictured in orange in the image) that is similar to the first larger triangle (pictured in blue). Notice that if the length of AB is 25,  each of its five equal divisions would be of length "5", and therefore two of them will render a length of "10" (which is the hypotenuse of this smaller right angle triangle.

Now, in order to find the sides of this smaller triangle (which can give us the clues on the horizontal and vertical coordinates of point M), we can use proportions.

To find the length "x" of the horizontal side , we do:

[tex]\frac{x}{10} =\frac{20}{25} \\x=\frac{10*20}{25} \\x=8[/tex]

To find the length "y" of the vertical side , we do:

[tex]\frac{y}{10} =\frac{15}{25} \\y=\frac{10*15}{25} \\y=6[/tex]

Then, the coordinate "x" of point M will be "8", while we can calculate the y position of point M subtracting "6" from 15 (the length of the vertical side in the original triangle). This gives us the coordinates (8,9) for point M as marked in orange in the picture.

Answer:

3

Step-by-step explanation:

What Do You Mean Graphy  But I Just Think It Is 3

Yes they are linearly dependent, essentially the same equation.

Start from one of them:

-6 + y = 2x

Move things around:

y - 2x = 6

Multiply both sides by 2,

2y - 4x = 12

That's the second equation, which we've shown is equivalent to the first, so they're linearly dependent.

Answer:

Step-by-step explanation:

Incomplete question. 7h+3 is just an algebraic expression.

Answer:

Step-by-step explanation:

2n + n    combine like terms

= 2n + 1n = (2 + 1)n = 3n

Answer:

3n

Step-by-step explanation:

2n + n Combine like terms

= 2n + 1n = (2+1)n= 3n

Answer:

A

Step-by-step explanation:

8+7=15

For the numbers 8, 7, and 15, the true statements are '15 is 7 more than 8' and, when rephrased correctly, '7 is 8 more than 15'. The concept of significant figures plays an important role in mathematical operations to maintain the accuracy of results based on the precision of original numbers.

The fact family model is used to represent the relationship between three numbers that can form addition and subtraction statements. For the numbers 8, 7, and 15, only some of the given statements are true. Let's verify each statement:

15 is 7 more than 8: This statement is true, as 8 + 7 equals 15.

15 is 8 less than 7: This statement is false, as adding 8 to 7 gives us 15, not taking 8 from 7.

7 is 15 less than 8: This statement is false, as subtracting 15 from 8 would give us a negative number, not 7.

7 is 8 more than 15: This statement is true when we rephrase it correctly as 7 + 8 equals 15.

Therefore, only two statements are accurate: '15 is 7 more than 8' and '7 is 8 more than 15' when considered as 7 + 8 = 15.

The subject of significant figures and rounding is also related to mathematics. When performing mathematical operations, significant figures are crucial to ensure that our answers are as accurate as the precision of the numbers we started with, without overstating the certainty of our results. This becomes important when adding, subtracting, multiplying, or dividing numbers in mathematics.

https://brainly.com/question/35705130

#SPJ2

Answer:

54mph

Step-by-step explanation:

To find the speed in "miles per hour" or miles/hour, divide the number of miles by number of hours.

1080 miles/20 hours

= 54miles/hour

His speed is 54 miles per hour.

The constant of variation here is the reading speed, which is 14 pages per hour.

The student reads 56 pages in 4 hours. To find out how many pages the student will read in 7 hours, we first calculate the constant of variation, which is the student's reading speed per hour. We divide 56 pages by 4 hours to get a reading speed of 14 pages per hour. To find the total number of pages read in 7 hours, we multiply the hourly reading speed by 7 hours.

Calculate hourly reading speed: 56 pages   4 hours = 14 pages/hour.

Multiply the hourly reading speed by the number of hours: 14 pages/hour   7 hours.

The student is expected to read 98 pages in 7 hours (14 pages/hour   7 hours = 98 pages).

hence, the student's constant of variation is their reading speed, which is 14 pages per hour. By multiplying this constant by 7 hours, we find that the student will read 98 pages in 7 hours.

Answer: 14. 1 in

Step-by-step explanation:

The formula for calculating the length of an arc is given as :

L = Ф/360 x 2πr

where Ф is the angle subtended by the arc

r = radius

substituting the given values

L = 135/360 x 2 x 3.14 x 6

L = 5086.8/360

L = 14.13

L ≈ 14.1 in to the nearest tenth

Answer:

The answer is A

Step-by-step explanation:

edge 2021

Answer:

The rule is x2 -1 (times two minus one)

4 - 1 = 3

4 + 3 = 7

7 - 1 = 6

7 + 6 = 13

13 - 1 = 12

13 + 12 = 25

25 - 1 = 24

25 + 24 = 49

49 - 1 = 48

49 + 48 = 97

Answer:

C. 10 and 20

Step-by-step explanation:

A common factor is just a value that both numbers can be divided by to give you an integer. (an integer is a number without a decimal point btw or anything that is not a fraction)

Answer A and B are too small so there's no way they can be divided by 10.

D and E are too big, so they can be divided by a number bigger than 10. (the question did ask for the biggest dividing number to be 10)

The only answer left is C.