7/2x-2=28-4x solve for x

Answers

Answer 1
According to a calculator, the value of x is 4

Related Questions

What is the reciprocal of 2 2/3

Answers

[tex]\bf 2\frac{2}{3}\implies \cfrac{2\cdot 3+2}{3}\implies \cfrac{8}{3}\qquad reciprocal\implies \cfrac{3}{8}[/tex]
3/8, because you make the mixed number an improper fraction(8/3), then you flip it (3/8)

Canada has a population that is 1/10 as large as the United States. If Canada's population is about 32 million, about how many people live in the United States? Explain the number of zeros in your answer.

Answers

Answer:

Step-by-step explanation:

Let the American Population = x

1/10 x = 32,000,000  Multiply by sides by 10

x = 320,000,000 Thirty two followed by 7 zeros is the population of America.

Find the standard form of the equation of the parabola with a focus at (-4, 0) and a directrix at x = 4. (2 points)

Answers

To find the focus you have to find the center between the to, do you remember the formula's?

check the picture below.

since the focus point is at -4, 0 and the directrix is a vertical line at  x = 4, is a horizontal parabola, and it opens to the left-hand-side.

now, notice the distance "p", is just 4 units, however, the parabola is opening to the left-side, thus "p" is negative, then is -4, the vertex is half-way between the focus point and the directrix.

[tex]\bf \textit{parabola vertex form with focus point distance}\\\\ \begin{array}{llll} \boxed{(y-{{ k}})^2=4{{ p}}(x-{{ h}})} \\\\ (x-{{ h}})^2=4{{ p}}(y-{{ k}}) \\ \end{array} \qquad \begin{array}{llll} vertex\ ({{ h}},{{ k}})\\\\ {{ p}}=\textit{distance from vertex to }\\ \qquad \textit{ focus or directrix} \end{array}\\\\ -------------------------------\\\\ \begin{cases} h=0\\ k=0\\ p=-4 \end{cases}\implies (y-0)^2=4(-4)(x-0)\implies y^2=-16x \\\\\\ -\cfrac{1}{16}y^2=x[/tex]

Greatest common factor of 8 and 14?

Answers

the greatest common factor (GCF) of 8 and 14 is 2
The Greatest common factors is 2 because it is The common factors of 8 and 14.☺

a hallway measuring 90 feet x 7 feet requires 1/2 a fluid ounce of cleaning solutions per square foot. how much cleaning solution is required

Answers

315 fluid ounces

90x7 = 630
630 x 1/2 = 315

If $3500 is invested at the rate of 8%, compounded quarterly, what will be the value of the investment 17 years from now, assuming no withdrawals?

Answers

We will use the compound interest formula, which is

A = P(1+r/n)^(n*t)

The variables are

A = amount in the account after t years
P = initial amount invested
r = interest rate (in decimal form)
n = compounding frequency
t = number of years

In this case

A = unknown (we're solving for this)
P = 3500
r = 0.08 (8% = 8/100 = 0.08)
n = 4 (compound quarterly ---> compound 4 times a year)
t = 17

------------------------------------------

Plug all these values into the equation to get...

A = P(1+r/n)^(n*t)
A = 3500(1+0.08/4)^(4*17)
A = 3500(1+0.02)^(4*17)
A = 3500(1.02)^(4*17)
A = 3500(1.02)^(68)
A = 3500(3.8442505025456)
A = 13454.8767589096
A = 13454.88

This means that you will have $13454.88 in the account after 17 years

Final Answer: 13454.88

One card is selected at random from an ordinary deck of 52 playing cards. let a = event a face card is selected

Answers

we have three face card and 4 groups of cards
3*4=12
12/52=3/13
p(a)=3/13

Solve for the indicated variable

D = 2zv for v

Answers

2zv=D  divide both sides by 2z

v=D/(2z)

First option is correct i.e. [tex]v = \frac{D}{2z}[/tex] .

What is variable in an equation?

Variable is a symbol( usually a letter) standing in for an unknown numerical value in an equation.

How to solve an equation for the variable?

To solve or isolate a variable means to get the variable on one side of the equation by itself.

According to the given question

we have an equation

D = 2zv and to solve for variable v

For solving the above equation for the variable v, make the variable v on one side of the equation by itself.

⇒ [tex]\frac{D}{2z} = \frac{2zv}{2z}[/tex]    ( dividing both the sides by 2z)

⇒ [tex]v = \frac{D}{2z}[/tex]

Hence, option first is correct.

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A father is 60 years old and his son is half his age. How old was the boy when his father was four times his age?

Answers

If the father is 60, the son is 30 (half the age).

From here, we can tell that father's age= son's age+30. We can now create the system of equations as follows.
f= s+30
f=4s

Because both define f, put the two equations together.
4s=s+30
3s=30
s=10

Final answer: The boy was 10 (and his father was 40).

ok so what is is the square root of 1234 i dot know

Answers

sqrt(1234) = 35.1283

 you don't say how it should be rounded, so round off as needed

negative 2 to the 3 power

Answers

-2^3 = -2 * -2 * -2 = -8
2 to the power of 3 is 8

What is the answer, with the correct number of decimal places, for this problem? 4.392 g + 102.40 g + 2.51 g =?

Answers

The summation of 4.392 g + 102.40 g + 2.51 g with three decimal places is 109.302 g.

What is summation?

A summation, also abbreviated as a sum, is the outcome of adding two or more numbers or quantities. Here are always an integer number of terms in a summation. There could be only two terms, but there could be one hundred, thousand, or a million.

Given the expression for sum,

4.392 g + 102.40 g + 2.51 g

⇒ (4.392 + 102.40 + 2.51)g

⇒ 109.302 g

Hence "The summation of 4.392 g + 102.40 g + 2.51 g with three decimal places is 109.302 g".

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Final answer:

The sum of the masses 4.392 g, 102.40 g, and 2.51 g is 109.30 g.

Explanation:

A summation, which can sometimes be shortened to "sum," is the result of multiplying two or more quantities by one another. A summation always has an integer number of terms. One hundred, thousand, or a million phrases could exist, but there could only be two.

The sum of the masses 4.392 g, 102.40 g, and 2.51 g is 109.302 g.

To ensure the correct number of decimal places, we need to consider the measurement with the least number of decimal places, which is 2.51 g.

Since 2.51 g has two decimal places, we round the sum to two decimal places as well.

Therefore, the answer is 109.30 g.

Anoav uses which statistical distribution to determine the significance of the results

Answers

In statistics, ANOVA means Analysis of Variance. This is a statistical tool that helps in determining if the effect of the independent variable on the dependent variable is significant or not. It uses the F-distribution to determine the difference of means. That is why the other name for ANOVA is the F-test. It was named in honor of Ronald Fisher. It is a table consisting of F values which is simply the ratio of two variances. It depends on the degrees of freedom and the α to be used. A sample of the F-table is shown in the picture.

Find the volume: in cm 7cm high 3cm wide 2 cm long

Answers

v=l×w×h
so 7×3×2=42 cm3
The answer is 42 cm cubed


Find the surface area of x^2+y^2+z^2=9 that lies above the cone z= sqrt(x^@+y^2)

Answers

The cone equation gives

[tex]z=\sqrt{x^2+y^2}\implies z^2=x^2+y^2[/tex]

which means that the intersection of the cone and sphere occurs at

[tex]x^2+y^2+(x^2+y^2)=9\implies x^2+y^2=\dfrac92[/tex]

i.e. along the vertical cylinder of radius [tex]\dfrac3{\sqrt2}[/tex] when [tex]z=\dfrac3{\sqrt2}[/tex].

We can parameterize the spherical cap in spherical coordinates by

[tex]\mathbf r(\theta,\varphi)=\langle3\cos\theta\sin\varphi,3\sin\theta\sin\varphi,3\cos\varphi\right\rangle[/tex]

where [tex]0\le\theta\le2\pi[/tex] and [tex]0\le\varphi\le\dfrac\pi4[/tex], which follows from the fact that the radius of the sphere is 3 and the height at which the sphere and cone intersect is [tex]\dfrac3{\sqrt2}[/tex]. So the angle between the vertical line through the origin and any line through the origin normal to the sphere along the cone's surface is

[tex]\varphi=\cos^{-1}\left(\dfrac{\frac3{\sqrt2}}3\right)=\cos^{-1}\left(\dfrac1{\sqrt2}\right)=\dfrac\pi4[/tex]

Now the surface area of the cap is given by the surface integral,

[tex]\displaystyle\iint_{\text{cap}}\mathrm dS=\int_{\theta=0}^{\theta=2\pi}\int_{\varphi=0}^{\varphi=\pi/4}\|\mathbf r_u\times\mathbf r_v\|\,\mathrm dv\,\mathrm du[/tex]
[tex]=\displaystyle\int_{u=0}^{u=2\pi}\int_{\varphi=0}^{\varphi=\pi/4}9\sin v\,\mathrm dv\,\mathrm du[/tex]
[tex]=-18\pi\cos v\bigg|_{v=0}^{v=\pi/4}[/tex]
[tex]=18\pi\left(1-\dfrac1{\sqrt2}\right)[/tex]
[tex]=9(2-\sqrt2)\pi[/tex]

Find The Perimeter Of The Shaded Region

90 ft
58 ft
24 ft
38 ft

Answers

l  = 14 - 6 = 8
w = 15 - 4 = 11

P of shaded = 2(8+9) = 2 (19) = 38

answer
last one 38ft

Answer:

38 ft

Step-by-step explanation:

Perimeter of the rectangle = 2* length + 2* width

Length of shaded part = Length of the larger rectangle - 4 = 11ft

width of the shaded part = width of the larger rectangle - 6 = 8 ft

Perimeter of the rectangle = 2* length + 2* width

Plug in the values of length and width

Perimeter of the shaded rectangle= 2(11) + 2(8)=  22+ 16= 38   feet

1. 8 7/16 - (-2 4/9)

Answers

8 7/16 - (-2 4/9) =

8 7/16 + 2 4/9 =

8 7/16 = 135/16 = 1215/144

2 4/9 = 22/9 = 352/144

1215/144 + 352/144 = 1567/144 =10 127/144

hat are the dimensions of the lightest​ open-top right circular cylindrical can that will hold a volume of 1728 cm^3?

Answers

The product of height and square of the radius of the open-top right circular cylindrical should be equal or more than 550 cm³ in order to hold a volume of 1728 cm³.

What is volume?

Volume is defined as the mass of the object per unit density while for geometry it is calculated as profile area multiplied by the length at which that profile is extruded.

The volume of the cylinder is = πr²h
In order to hold the volume of 1728 cm³,
πr²h ≥ 1728
r²h ≥ 550

Thus, the product of height and square of the radius of the open-top right circular cylindrical should be equal to or more than 550 cm³ in order to hold a volume of 1728 cm³.

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Milla and Luka are 3 kilometers apart and walking toward each other. Milla's average speed is 5 kilometers per hour and Luka's is 4 kilometers per hour.

Which equation can be used to find t, the time it takes for Milla and Luka to meet?
5t + 4t = 1
5t + 4t = 3
5t – 4t = 0
5t – 4t = 3

Answers

Answer: Second option is correct.

Step-by-step explanation:

Since we have given that

Speed of Milla = 5 km per hour

Speed of Luka = 4 km per hour

Distance between Milla and Luka = 3 km

Let the time be 't'.

As we know that

[tex]Distance=Speed\times time[/tex]

So, it becomes,

Distance covered by Milla + Distance covered by Luka = Total distance

[tex]5t+4t=3[/tex]

Hence, Second option is correct.

i need to know the solution using a fraction or integer to 3 more than the product of 7 and a number x is less than 26

Answers

so.. the number is "x", now, the product of "x" and 7 is just 7*x or 7x.

3 more than that? is just 7x + 3

so, we know is less than 26, 7x + 3 < 26

[tex]\bf 7x+3\ \textless \ 26\implies 7x\ \textless \ 26-3\implies 7x\ \textless \ 23\implies x\ \textless \ \cfrac{23}{7} \\\\\\ \boxed{x\ \textless \ 3\frac{2}{7}}\qquad \qquad 3\frac{2}{7}\implies \cfrac{3\cdot 7+2}{7}\implies \cfrac{23}{7}[/tex]

A rectangular container that has a length of 30 cm a width of 20 cm and her height of 24 cm is filled with water to a depth of 15 cm when an additional 6.5 L of water are poured into the container some water overflows. How many liters of water overflow the container?

Answers

30 x 20 x 24 = 14400 cubic cm

30 x 20 x 15 = 9000 cubic cm

14400-9000 = 5400 cubic cm left

 1 cubic cm = 0.001 liters

5400x 0.001 = 5.4 liters

6.5-5.4 = 1.1 liters overflow

1.1 L

Further explanation

Given:

A rectangular container that has:

a length of 30 cm,a width of 20 cm, anda height of 24 cm

It is filled with water to a depth of 15 cm.

When an additional 6.5 L of water are poured into the container, some water overflows.

Question:

How many liters of water overflow the container?

The Process:

Step-1: calculate the volume of rectangular container

[tex]\boxed{ \ V = length \times width \times depth \ }[/tex]

[tex]\boxed{ \ V = 30 \times 20 \times 24 \ }[/tex]

[tex]\boxed{ \ V = 14,400 \ cm^3 \ }[/tex]

The volume of rectangular container is 14,400 cm³, then converted to 14,4 L.

Step-2: calculate the volume of water filled in the container to a depth of 15 cm

[tex]\boxed{ \ V = length \times width \times depth \ }[/tex]

[tex]\boxed{ \ V = 30 \times 20 \times 15 \ }[/tex]

[tex]\boxed{ \ V = 9,000 \ cm^3 \ }[/tex]

The volume of water filled is 9,000³ cm, then converted to 9 L.

Step-3: calculate the volume of water overflow when an additional 6.5 L of water is poured into a container.

The volume of water overflow equals the initial water volume is added to the additional water volume then subtracted by the container volume.

The volume of water overflow = [tex]\boxed{ \ 9 \ L + 6.5 \ L - 14.4 L \ }[/tex]

Thus, the volume of water overflow of the container is 1.1 L.

Notes:

[tex]\boxed{ \ 1 \ cm^3 = 1 \ mL \ }[/tex]

[tex]\boxed{ \ 1,000 \ cm^3 = 1 \ L \ }[/tex]

[tex]\boxed{ \ 1 \ dm^3 = 1 \ L \ }[/tex]

Learn moreWhat is the volume of this rectangular prism? https://brainly.com/question/11613210Find out the area of a trapezoid  brainly.com/question/2280236Find out the area of a cube  brainly.com/question/12613605#

Keywords: a rectangular container, has a length of 30 cm, a width of 20 cm, height of 24 cm, is filled with water, to a depth of 15 cm, an additional 6.5 L of water, are poured into the container, some water overflows, the formula, volume

rewrite y=x^2-6x+2 then state whether the vertex is maximum or minimum and give its coordinates

Answers

To solve the expression we re-write the equation in vertex form;
y=x^2-6x+2
y=(x^2-6x+9)-9+2
y=(x-3)^2-7
the vertex is at the point (3,-7), hence the minimum or maximum point is at (3,-7)

How to solve this problem?

Answers

11)

 x*y = -5*2 = -10, absolute value is 10

y*z = 2 * -2 = -4, absolute value is 4

10+4 = 14

Find a general solution to the differential equation 2y''-5y'-3y=0

Answers

We want a general solution for the ODE
2y'' - 5y' - 3y = 0

The characteristic equation is
2m² - 5m - 3 = 0
(2m + 1)(m - 3) = 0
which yields
m = -1/2, 3

Answer:
The general solution is
[tex]y(x)=c_{1}e^{-x/2}+c_{2} e^{3x}[/tex]
where c₁ and c₂ are constants.

Two trains leave a train station traveling different directions. The first train travels 12 miles west, then 6 miles north. The second train travels 20 miles east, then 35 miles north.
a. The train station is the origin. What is the coordinate of each train?
b. Using the city center and the stop point of the first train, what is the slope of the line? Is it horizontal, vertical or neither? Write the equation of the line in slope-intercept form and standard form.
c. The city wants to build a train station 2 miles directly north of the first train station. They are going to build a train track parallel to the path the first train would’ve traveled if it were a direct route from the city center. What would be the equation of the line in slope intercept form of the new track?

Answers

Draw a diagram to illustrate the problem as shown below.
The origin (0, 0) is the train station.

Part a.
The first train travels 12 miles west and 6 miles north to arrive at A.
It's coordinate is (-12, 6).

The second train travels 20 miles east and 35 miles north to arrive at B.
It's coordinate is (20, 35).

Part b.
The slope of the line from the origin to A is
m = (6 - 0)/(-12 - 0) = -1/2.
The slope is neither vertical nor horizontal.
The y-intercept is 0.

The line OA is given in slope-intercept form by
y = -(1/2)x
In standard form, the line is
y - 6 = -(1/2)*(x - (-12))
or
y - 6 = -(1/2)*(x + 12)

Part c.
The new train station is located at (0, 2) because it is 2 miles north of the old station.
If a new track is built parallel to OA, then it should have a slope of -1/2.
Because it's y-intercept is 2, its equation in slope-intercept form is
y = -(1/2)x + 2.

Answer:a. first (-12,6) second (20,35)

b. y = -1/2x, 2y + 1x = 0 (neither horizontal or vertical)

c. y= -1/2x + 2.

Step-by-step explanation:

What is the length of time a loan will last if it has a rate of 0.02, a principal of $500, and it accrued $60 of interest if Interest = Principal * Rate * Time. How would you reduce the time of the loan?

Answers

Interest = Principal * Rate * Time
I=prt
Solve for t
T=I÷pr
T=60÷(500×0.02)
T=6 years

You can reduce the time of the loan by increasing the rate of interest
For example
T=60÷(500×0.05)
T=2.4 years
Answer and Explanation

T=I÷pr

T=60÷(500×0.02)

T=6 years  <-- Answer

8meters long 4 meters wide and 2 meters deep.What is the volume of the pond.

Answers

Volume of a 3 dimensional object is Length x Width x Height. The length is 8 meters, the width is 4 meters, and the height (the depth rather) is 2 meters. Therefore, the volume of the pond is equal to 8 x 4 x 2

8 x 4=32 x 2=64

The volume of the pond is 64 meters

Consider the following.
Point
(-5, 4)
 Line   
x + y = 7
(a) Write the slope-intercept form of the equation of the line through the given point and parallel to the given line.

(b) Write the slope-intercept form of the equation of the line through the given point and perpendicular to the given line.

Answers

x + y = 7....y = -x + 7....the slope here is -1

A. a parallel line will have the same slope
    y = mx + b
    slope(m) = -1
    (-5,4)...x = -5 and y = 4
    sub and find b, the y int
    4 = -1(-5) + b
    4 = 5 + b
    4 - 5 = b
    -1 = b
so ur parallel line is : y = -x - 1 <==

B. perpendicular lines have negative reciprocal slopes. That means our perpendicular line will have a slope of 1
   y = mx + b
   slope(m) = 1
   (-5,4)...x = -5 and y = 4
   now we sub and find b, the y int
   4 = 1(-5) + b
   4 = -5 + b
   4 + 5 = b
   9 = b
so ur perpendicular line is : y = x + 9 <==

From the 11

male and 6

female sales representatives for an insurance​ company, a team of 3

men and 2

women will be selected to attend a national conference on insurance fraud.
In how many ways can the team of 5

be​ selected?

Answers

Selecting r objects out of n objects, can be done in C(n, r) many ways.

For example selecting groups of 4 people out of 10 people can be done in
C(10, 4) many ways.


C(n, r) is calculated as follows: [tex]C(n, r)= \frac{n!}{r!(n-r!)} [/tex], 

where n! is 1*2*3*...*(n-1)*n


3 men out of 11 men, and 2 women out of 6 women are to be selected.

This can be done in C(11, 3) and C(6,2) ways respectively.

Since any of the selected men group can be combined with any of the selected women group, there are C(11, 3)*C(6,2) many ways of selecting the team of 5.


[tex]C(11, 3)*C(6,2) = \frac{11!}{8!3!} * \frac{6!}{4!2!}= \frac{11*10*9*8!}{8!*3!}* \frac{6*5*4!}{4!*2!}= \frac{11*10*9}{3*2*1} * \frac{6*5}{2*1}= [/tex]

165*15=2475


Answer: 2475

3 1/6 divided by 5/8

Answers

The result of 3 1/6 divided by 5/8 is equal to 76/15.

To divide a mixed number by a fraction, we need to convert the mixed number into an improper fraction.

In this case, 3 1/6 can be written as an improper fraction as (3 × 6 + 1) / 6 = 19/6.

Next, we can multiply the numerator of the fraction by the reciprocal of the divisor.

The reciprocal of 5/8 is 8/5.

So, (19/6) ÷ (5/8) = (19/6) × (8/5) = (19 × 8) / (6 × 5) = 152/30.

The fraction 152/30 can be simplified by dividing both the numerator and denominator by their greatest common divisor, which in this case is 2. So, (152/30) ÷ 2 = 76/15.

Therefore, 3 1/6 divided by 5/8 is equal to 76/15.

Final answer:

To find the result of 3 1/6 divided by 5/8, convert the mixed number to an improper fraction, multiply by the reciprocal of the divisor, and simplify the resulting fraction. The answer is 5 1/15.

Explanation:

The student's question 3 1/6 divided by 5/8 is a mathematics problem that involves division of mixed numbers and fractions. To solve this problem, the student first needs to convert the mixed number into an improper fraction. To do this, the student multiplies the whole number by the denominator of the fractional part and then adds the numerator:

Multiply 3 (the whole number) by 6 (the denominator of the fractional part): 3 x 6 = 18.

Add the numerator (the fractional part's numerator, which is 1): 18 + 1 = 19. So, 3 1/6 becomes 19/6.

The next step is to divide 19/6 by 5/8. In division of fractions, you multiply by the reciprocal of the divisor. The reciprocal of 5/8 is 8/5.

Therefore, you multiply 19/6 by 8/5: 19/6 x 8/5.

Perform the multiplication of numerators and denominators: 19 x 8 = 152 and 6 x 5 = 30.

The result is 152/30. This fraction can be simplified by dividing both the numerator and the denominator by their greatest common divisor, which is 2.

The simplified answer is 76/15, or as a mixed number, 5 1/15.

This shows that 3 1/6 divided by 5/8 is 5 1/15.

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