Find the value of x.
a 25
b40
c45
d60​

Answer:

x+y=40liters

10%x+5%y=8%×40

(2x+y)/20=8%×40

(2x+y)=64

x=24

y=16

Answer:

[tex]\large\boxed{(f+g)(x)=4x^2+\dfrac{3}{2}x-7}[/tex]

Step-by-step explanation:

[tex](f+g)(x)=f(x)+g(x)\\\\f(x)=\dfrac{x}{2}-3=\dfrac{1}{2}x-3,\ g(x)=4x^2+x-4\\\\\text{Substitute:}\\\\(f+g)(x)=\left(\dfrac{1}{2}x-3\right)+(4x^2+x-4)\\\\=\dfrac{1}{2}x-3+4x^2+x-4\qquad\text{combine like terms}\\\\=4x^2+\left(\dfrac{1}{2}x+x\right)+(-3-4)\\\\=4x^2+1\dfrac{1}{2}x-7\\\\=4x^2+\dfrac{3}{2}x-7[/tex]

Answer:

21 rides, with $0.50 left.

Step-by-step explanation:

All rides cost $1. Note that you cannot take half a ride, and so the cents (0.50) is out of the question. Divide 21 with 1:

21/1 = 21

Angela can ride up to 21 rides.

~

Final answer:

The future value of the house will be approximately $232,810.10 in 10 years, calculated by compounding the initial value of $130,000 at an annual growth rate of 6%.

Explanation:

To calculate the future value of a house appreciating at a certain rate, we can use the compound interest formula: [tex]Future\ Value = Present\ Value \* (1 + growth/decay rate)^{number of periods[/tex]

In this scenario, the house is appreciating, which means it's increasing in value over time.

We're given that the initial amount (Present Value) is $130,000 and the growth rate is 6% per year.

The function that represents the situation is:
Future Value = $130,000 × (1 + 0.06)¹⁰

To find the value of the house in 10 years, we simply plug in the values:

Future Value = $130,000 × (1 + 0.06)¹⁰
Future Value = $130,000 × (1.06)¹⁰
Future Value = $130,000 × 1.790847
Future Value = $232,810.10 approximately

Therefore, the house will be worth approximately $232,810.10 in 10 years, and this represents growth, not decay.

Answer:

Step-by-step explanation:

The point where f(x)= g(x) is  x = -2; x = 2.

The correct option is (A)

Graph is a mathematical representation of a network and it describes the relationship between lines and points.

As, from the graph the line graph for f(x) and g(x) is coinciding at two points at 2 and -2.

At these two points the two function line overlap.

So, point where f(x)= g(x) is x=2 and x=-2.

Learn more about graph here:

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Convert the fractions to decimals:

1/8 = 0.125

2/3 = 0.666

3/5 = 0.6

Now arrange from largest to smallest

2/3, 3/5, 1/8

Answer:

2/3 biggest

3/5

1/8 smallest

Answer:

The slope is 2.

Step-by-step explanation:

Answer:

x = 6.93

Step-by-step explanation:

If a tangent and a secant are drawn to a circle from the same exterior point, the square of the length of the tangent is equal to the product of the total length of the secant and the length of the external segment of the secant.

From the given diagram,

(8+4)×4=x²

12×4=x²

48=x²

x=√48

x=6.93

x=7 to the nearest whole number.

Answer: Option b

[tex]M=24[/tex]

Step-by-step explanation:

We have the following list of data

36 20 35 13 30 14 36 11 29 19 22 40 34 17 26 21

The list contains 16 data.

The first step to calculate the median is to order the data from least to highest

11,13,14,17,19,20,21,22,26,29,30,34,35,36,36,40

Now mark the two central values of the data set

11,13,14,17,19,20,21         [22,26]       29,30,34,35,36,36,40

The median of the data is the average of the two central values

[tex]M=\frac{22+26}{2}[/tex]

[tex]M=24[/tex]

Note that the median is the central value of the ordered data set

Check the picture below.

[tex]\bf \textit{volume of a pyramid}\\\\ V=\cfrac{1}{3}Bh~~ \begin{cases} B=&area~of\\ &its~base\\ h=&height\\ \cline{1-2} B=&\frac{1}{2}(3)(4)\\ h=&10 \end{cases}\implies V=\cfrac{1}{3}\cdot \cfrac{1}{2}(3)(4)(10)\implies V=20[/tex]

Answer:

1 - 12x + 60x^2 - 160x^3 + 240x^4 - 192x^5 + 64x^6

Step-by-step explanation:

So we need to know the 7th line of pascals triangle so let us write it out

1

1 1

1 2 1

1 3 3 1

1 4 6 4 1

1 5 10 10 5 1

1 6 15 20 15 6 1 <----- This one

Now we know we will need coefficients of x from 0 to 6, let us call this i, and for each of these the coefficient is

(-2)^i * (1)^(6-i) * number in pascals triangle

Hence

i = 0, 1 * 1 * 1 = 1

i = 1, -2 * 1 * 6 = -12

i = 2, 4 * 1 * 15 = 60

i = 3, -8 * 1 * 20 = -160

i = 4, 16 * 1 * 15 = 240

i = 5, -32 * 1 * 6 = -192

i = 6, 64 * 1 * 1 = 64

Hence (1-2x)^6 = 1 - 12x + 60x^2 - 160x^3 + 240x^4 - 192x^5 + 64x^6

X - intercepts are also known as zeros. To solve this simply take each factor of the polynomial and set it equal to zero. Solve for x then you'll have your x - value of the x intercept.

x - 1 = 0

x - 1 +1 = 0 + 1

x = 1

x - 4 = 0

x - 4 + 4 =0 +4

x = 4

x + 7 = 0

x + 7 - 7 = 0 - 7

x = -7

^^^All the above are the x values of the x - intercepts

The answer is...

C. (1 , 0) (4, 0) ( -7, 0)

Hope this helped!

~Just a girl in love with Shawn Mendes

To calculate the total surface area of a hemisphere with a radius of 8 cm, we use the formula A = 3πr², resulting in a total surface area of approximately 602.9 cm² to one decimal place.

The question asks us to work out the total surface area of a hemisphere with a radius of 8cm and provide the answer to one decimal place. The total surface area of a hemisphere is given by the formula A = 2πr² + πr², where π is approximately 3.14 and r is the radius of the hemisphere. The first part 2πr² represents the curved surface area, and the second part πr² represents the area of the circular base.

Substituting 8 cm for r:

A = 2π(8²) + π(8²) = 2π(64) + π(64) = 128π + 64π = 192π cm²

Converting π to 3.14:

A = 192(3.14) = 602.88 cm². Therefore, the total surface area of the hemisphere is approximately 602.9 cm² to one decimal place.

The total surface area of this hemisphere is approximately 603.2 cm².

Calculating the Total Surface Area of a Hemisphere

To find the total surface area of a hemisphere with a radius of 8 cm, we need to consider both the curved surface area and the base area.

Curved Surface Area: The formula for the curved surface area of a hemisphere is given by 2πr², where r is the radius. Substituting the given radius (8 cm), we get:

Curved Surface Area = 2π(8 cm)² = 2π(64 cm²) ≈ 2 × 3.1415927 × 64 = 402.1 cm² (rounded to one decimal place)

Base Area: The base of the hemisphere is a circle with the area given by the formula πr². Using the radius (8 cm), we get:

Base Area = π(8 cm)² = π(64 cm²) ≈ 3.1415927 × 64 = 201.1 cm² (rounded to one decimal place)

Total Surface Area: To find the total surface area, we sum the curved surface area and the base area:

Total Surface Area = 402.1 cm² + 201.1 cm² = 603.2 cm²

Therefore, the total surface area of the hemisphere is approximately 603.2 cm².

Answer:

The correct answer option is quadratic, because the height increases and then decreases.

Step-by-step explanation:

We are given the following data in the table which represents the height of an object over  time:

Time (s)          Height (ft)

     0                      5

      1                     50

     2                     70

     3                     48

We know that in situation where the values increase and then decreases, a quadratic model is used.

From the values given in the table, we can see that the values of height first increased and then decreased with the increase in time.

Therefore, the model used is quadratic, because the height increases and then decreases.

Answer:

Step-by-step explanation:

Answer:

522.9 revolutions /min

Step-by-step explanation:

Given Diameter, D = 27 inches

Circumference, C = πD = 3.142 x 27 = 84.82 inches

(recall 1 mi = 63360 in)

Car speed is 42 mph =  42 mph x 63,360 inches / mile = 2,661,120 inches / hr

(recall 1 hour = 60 min)

Hence car speed becomes

= 2,661,120 inches / hr ÷ 60 min/hr

= 44,352 inches / min

Number of revolutions / min

= speed in inches/min ÷ circumference

= 44,352 ÷ 84.82 = 522.9 revolutions /min

To find out how fast a tire with a diameter of 27 inches is turning for a car moving at 42 mph, you first convert miles per hour to inches per minute, then calculate the tire's circumference in inches, and divide the car's speed by this circumference. The calculated result is approximately 523.05 revolutions per minute.

To answer this question, we first need to convert the information about speed and tire diameter to compatible units. We'll convert the car speed from miles per hour (mph) to inches per minute since the diameter of the tire is given in inches.

Since 1 mile equals 63,360 inches, 42 mph is equal to 42*63360 = 2,661,120 inches per hour. As there are 60 minutes in an hour, that comes out to 2,661,120/60 = 44,352 inches per minute.

Next, we will find the circumference of the tire, which is its diameter multiplied by pi. Therefore, we have a circumference of 27 inches * 3.14 (pi) = 84.78 inches.

Finally, to find out how many times the tire rotates in a minute, we divide the car's speed in inches per minute by the tire's circumference in inches. This means the tires are making 44,352/ 84.78 ~= 523.05 revolutions per minute.

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Answer:

x + 2y = - 2

Step-by-step explanation:

The equation of a line in standard form is

Ax + By = C ( A is a positive integer and B, C are integers )

Obtain the equation in slope- intercept form

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (- 2, 0) and (x₂, y₂ ) = (8, - 5)

m = [tex]\frac{-5-0}{8+2}[/tex] = [tex]\frac{-5}{10}[/tex] = - [tex]\frac{1}{2}[/tex]

y = - [tex]\frac{1}{2}[/tex] + c ← partial equation of line

To find c substitute either of the 2 points into the partial equation

Using (- 2, 0), then

0 = 1 + c ⇒ c = - 1

y = - [tex]\frac{1}{2}[/tex] x - 1 ← in slope- intercept form

Multiply through by 2

2y = - x - 2 ( add x to both sides )

x + 2y = - 2 ← in standard form

Answer:

Step-by-step explanation:

(8x - 7)(

The x^2 term has to come out to 8x^2.

The 8 is already there.

So your first term in the second factor is x.

(8x - 7) ( x

Now the question is what is the sign after the x. Since the question shows +7 the only way that can happen is if both signs in the factors are the same.

Since (8x - 7) has been given to you and you need 7 to come out plus, then the sign after x must minus. Both signs must be the same.

(8x - 7)(x -

Last, what comes after the minus sign? You already have a minus 7 so you need something to multiply by 7 to get seven.

That should be a one.

(8x - 7)(x - 1)

x - 1 is you answer. I leave you to check the middle term. It is - 15

Answer:

Step-by-step explanation:

[tex]\dfrac{x}{5}+1=7\qquad\text{subtract 1 from both sides}\\\\\dfrac{x}{5}+1-1=7-1\\\\\dfrac{x}{5}=6\qquad\text{multiply both sides by 5}\\\\5\!\!\!\!\diagup^1\cdot\dfrac{x}{5\!\!\!\!\diagup_1}=5\cdot6\\\\x=30[/tex]

Answer:

60 x^3 y^7

Step-by-step explanation:

3x^3 = 3*xxx

12y^7 = 3*4 yyyyyyy

15xy^3 = 3*5 xyyy

We need to have the minimum of each for the least common multiply

For the numbers there is a 3 a 4 and a 5

For the x , the minimum is xxx

For the y, the minimum is yyyyyyy

Least common multiple: 3*4*5 xxx yyyyyyy

                                       60 x^3 y^7

[tex]\bf \begin{cases} f(x)=(7x^3+18)^2\\ f(x) = (h\circ g)(x)\\ h(x)=x^2 \end{cases}~\hspace{5em}(h\circ g)(x) = \stackrel{f(x)}{(7x^3+18)^2} \\\\\\ h(x) = x^2\implies \stackrel{(h\circ g)(x)}{h(~~g(x)~~)}=[g(x)]^2\implies h(~~g(x)~~)=\stackrel{f(x)}{(7x^3+18)^2} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill g(x)=7x^3+18~\hfill[/tex]

Answer:(x+1) (x+8)

Step-by-step explanation:

Answer:

(x + 8)(x + 1)

Step-by-step explanation:

Consider the factors of the constant term (+ 8) which sum to give the coefficient of the x- term (+ 9)

The factors are + 8 and + 1, since

8 × 1 = 8 and 9 + 1 = 9, hence

x² + 9x + 8 = (x + 8)(x + 1) ← in factored form

Answer:

11/13

Step-by-step explanation:

198/234

(198/18)/(234/18)

11/13

Answer:

11/13

Step-by-step explanation:

198 cents to 234 cents using a fraction in simplest form is 11/13.

Hope this helps!

Feel free to ask if you have anymore questions!

Answer:

38.5

Step-by-step explanation:

7 times 5.5

Answer:

The set of ordered pair are { (-12,-18),(-3,-3), (0,2),(3,7),(12,22)}

Step-by-step explanation:

we have

[tex]f(x)=\frac{5}{3}x+2[/tex]

Find the values of f(x) for the domain values

For x=-12

substitute

[tex]f(-12)=\frac{5}{3}(-12)+2=-18[/tex]

The ordered pair is (-12,-18)

For x=-3

substitute

[tex]f(-3)=\frac{5}{3}(-3)+2=-3[/tex]

The ordered pair is (-3,-3)

For x=0

substitute

[tex]f(0)=\frac{5}{3}(0)+2=2[/tex]

The ordered pair is (0,2)

For x=3

substitute

[tex]f(3)=\frac{5}{3}(3)+2=7[/tex]

The ordered pair is (3,7)

For x=12

substitute

[tex]f(12)=\frac{5}{3}(12)+2=22[/tex]

The ordered pair is (12,22)

Answer with explanation:

The given function is

   [tex]f(x)=\frac{5x}{3}+2\\\\x=-12,-3,0,3,12\\\\f(-12)=\frac{5\times -12}{3}+2\\\\f(-12)=-20+2\\\\f(-12)=-18\\\\f(-3)=\frac{5 \times -3}{3}+2\\\\f(-3)=-5+2\\\\f(-3)=-3\\\\f(0)=\frac{5\times 0}{3}+2\\\\f(0)=2\\\\f(3)=\frac{5\times 3}{3}+2\\\\f(3)=5+2\\\\f(3)=7\\\\f(12)=\frac{5\times 12}{3}+2\\\\f(12)=20+2\\\\f(12)=22[/tex]

So, the ordered pair will be

   (-12, -18),(-3,-3),(0,2),(3,7),(12,22)

Answer:

the value of 7x-y is -14.

Step-by-step explanation:

When x=2 and y=4,

To find the value of 7x - y when x =2, y = 4, this means when ever you see x, put 2 in replacement, y, put 4 respectively.

7x - y = 7(2 - 4)

14 - 28

= -14.​

The value of the expression 7x - y is 10 if the values of x and y are 2 and 4 respectively.

It is defined as the combination of constants and variables with mathematical operators.

It is given that:

The expression is:

= 7x - y

The value of x and y is given:

x = 2

y = 4

Plug the above values in the expression 7x - y

= 7(2) - 4

= 14 - 4

= 10

The linear expression can be defined as the relation between two expressions, if we plot the graph of the linear expression we will get a straight line.

If in the linear expression, one variable is present, then the expression is known as the linear expression in one variable.

Thus, the value of the expression 7x - y is 10 if the values of x and y are 2 and 4 respectively.

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Answer:

y = 4x^5 - 12x^4 + 6x and

y = 5x^3 - 2x

Step-by-step explanation:

The system of equations that can be used to find the roots of the equation 4x^5-12x^4+6x=5x^3-2x are;

y = 4x^5 - 12x^4 + 6x and

y = 5x^3 - 2x

We simply formulate two equations by splitting the left and the right hand sides of the given equation.

The next step is to graph these two system of equations on the same graph in order to determine the solution(s) to the given original equation.

The roots of the given equation will be given by the points where these two equations will intersect.

The graph of these two equations is as shown in the attachment below;

The roots are thus;

x = 0 and x = 0.813

Answer: a dilation and a rotation

Step-by-step explanation:

From the given figure it can be seen that ΔABC is reduced to ΔA"B"C" so there must be dilation.

Also, when there is rotation about point C to create ΔA"B"C".

Therefore, the transformations could have occurred to map ΔABC to ΔA"B"C" are a dilation and a rotation.