Solve for x: (2/5)(x-4)=2x​

Answers

Answer 1

Simplify brackets

2/5(x - 4) = 2x

Simplify 2/5(x - 4) to 2(x - 4)/5

2(x - 4)/5 = 2x

Multiply both sides by 5

2(x - 4) = 10x

Divide both sides by 2

x - 4 = 5x

Subtract x from both sides

-4 = 5x - x

Simplify 5x - x to 4x

-4 = 4x

Divide both sides by 4

-1 = x

Switch sides

x = -1


Related Questions

A circus had 40 lions. If the ratio of lions to monkeys was 4:9, how many lions and monkeys are there?

Answers

Answer:

90 monkeys

Step-by-step explanation:

If the circus has 40 lions (4*10) = 40

Lions would also multiply by 10 (9*10) = 90

Both sides must be multiplied by the same number to be consistent.

PLEASE HELP ASAP
Evaluate the expression. 8(12 + 4)0 − 4(8 + 3)0
A) 0
B) 1
C) 2
D) 4

Answers

A I think cuz both are multiplied by 0

The answer is zero because there is a zero that you would have to multiply you sum too

Please help me with this math homework ​

Answers

Basically you have to find the graph that goes through the middle of the line or points to it.

I know you can do it! If you have any questions just reply.

can someone find the volume of this pyramid?

Answers

Check the picture below.

now, let's notice the triangle on the base.... is an isosceles, two sides are twins, and therefore, the two angles they make out are also twins, so, if the central angle is 100°, the other angles are each 80°/2, namely 40°, therefore, using the law of sines,

[tex]\bf \textit{Law of sines} \\\\ \cfrac{sin(\measuredangle A)}{a}=\cfrac{sin(\measuredangle B)}{b}=\cfrac{sin(\measuredangle C)}{c} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \cfrac{sin(100^o)}{2.5}=\cfrac{sin(40^o)}{r}\implies r\cdot sin(100^o)=2.5\cdot sin(40^o) \\\\\\ r=\cfrac{2.5\cdot sin(40^o)}{sin(100^o)}\implies \boxed{r\approx 1.63}[/tex]

now, let's notice the shaded triangle, namely the one with 35°, is a right-triangle, namely one angle is 35°, another 90°, so the last one must be 55°.

the opposite side to the 35° is "r", which we know is about 1.63, so again, let's use the law of sines to find the side "h",

[tex]\bf \cfrac{r}{sin(35^o)}=\cfrac{h}{sin(55^o)}\implies r\cdot sin(55^o)=h\cdot sin(35^o) \\\\\\ \cfrac{r\cdot sin(55^o)}{sin(35^o)}=h\implies \cfrac{1.63\cdot sin(55^o)}{sin(35^o)}\approx h\implies \boxed{2.33\approx h} \\\\[-0.35em] ~\dotfill\\\\ \textit{volume of a circular cone}\\\\ V=\cfrac{\pi r^2 h}{3}~~ \begin{cases} r\approx 1.63\\ h\approx 2.33 \end{cases}\implies V\approx \cfrac{\pi (1.63)^2(2.33)}{3}\implies \blacktriangleright V\approx 6.48 \blacktriangleleft[/tex]

make sure your calculator is in Degree mode.

Add. Write your answer as a fraction in simplest form. 9/10 +(− 4/5 )

Answers

Step-by-step explanation:

9/10 + (-4/5)

1. Use the least common denominator (LCD): 10

9/10 + (-8/10)

2. Remove the parentheses:

9/10 - 8/10

3. Simplify:

= 1/10

Hope this Helped!!

~Shane

A quadrilateral has angle measures of 102°, 84°, and 77°. What is the measure of the fourth angle?

Answers

Answer:

Measure of the 4th angle = 360-(102+84+77)

= 360-263

= 97°

Hope this helps!

Plz help me with it

Answers

Answer:   [tex]\bold{2\sqrt[3]{15} }[/tex]

Step-by-step explanation:

[tex]\sqrt[3]{10} \cdot \sqrt[3]{12} =\sqrt[3]{2\cdot 5\cdot 2\cdot 2\cdot 3} =2\sqrt[3]{3\cdot 5} =\boxed{2\sqrt[3]{15}}[/tex]

HELP PLEASE 3 QUESTIONS (30 POINTS)

Answers

Answer:

1.) A

2.) B I Think

3.) B

Answer:

1. a / 2. c / 3. b

Step-by-step explanation:

Factor. 49x16−16y64

Answers

Answer:

(7x8 + 4y32) • (7x8 - 4y32)

Step-by-step explanation:

P.1 (49 • (x16)) - 24y64

P.2 72x16 - 24y64

P.3 (7x8 +4y32) • (7x8 - 4y32)

The volume of a cube can be found using the equation V=S3, where V is the volume and Sis the measure of one side of the cube. Match the equation for how to solve for the side length of a cube to its description.

Answers

Answer:

s = ∛729 in³

Step-by-step explanation:

Since the volume is 729 in³, our equation can be plugged into:

729 = s³.

Isolate s by cube rooting each side: ∛729 = s.

‐15−8= ‐15 + __

= __

Enter numbers to evaluate ‐15−(‐8).

‐15−(‐8)= ‐15 + __

=__

Answers

Answer:

‐15−8= ‐15 + -8

‐15−(‐8)= ‐15 + 8

Step-by-step explanation:

‐15−8 = -23

‐15 + -8 = -23

‐15−(‐8) = -7

-15+8 = -7

Answer:

‐15−8= ‐15 + -8

‐15−(‐8)= ‐15 + 8

Part A: Explain how to determine the value of the vertical translation, d, for the graph of g(x). (2 points)

Part B: Explain how to determine the value of the vertical translation, d, for the graph of f(x) = 2sin(θ + 120°) + 6. (3 points)

Answers

Answer:

Part A: Up 9

Part B: Up 6

Step-by-step explanation:

Part A: The graph appears to be a cosine graph since it starts at a peak on the y-axis. Normally a cosine graph starts at (0,1). This graph begins at (0,10). It has been shifted up y a translation by 9.

Part B: Each trig equation has a basic structure f(x) = a sin (x+b) + k where:

a is the vertical stretchb is the horizontal shiftk is the vertical shift

A vertical translation is a vertical shift and is represented by the value in k added outside of the function. In the equation f(x) = 2sin(θ + 120°) + 6, k = 6. The vertical translation is 6.

A. What is the name of the 3D shape?
b. What is the formula for total surface area for this shape?
c. What is the surface area of the figure?

Answers

Check the picture below.

so then, let's notice, this triangular prism is really just 2 triangles and 3 rectangles stacked up to each other at the edges.

so if we simply get the area of each of those figures, and sum them up, that'd be the area of the prism.

notice, the triangles have a base of 4 and a height/altitude of 3.

[tex]\bf \stackrel{\textit{2 triangles}}{2\left[ \cfrac{1}{2}(4)(3) \right]}~~+~~\stackrel{\textit{inclined rectangle}}{(5\cdot 11)}~~+~~\stackrel{\textit{ground rectangle}}{(4\cdot 11)}~~+~~\stackrel{\textit{standing rectangle}}{(3\cdot 11)} \\\\\\ 12+55+44+33\implies 67+77\implies 144[/tex]

The perimeter of a square is 76.4m calculate the length of its diagonal

Answers

Answer: About 27.01

Step-by-step explanation: The way to find the diagonal is to multiply one side of the square by the sq. rt. of 2. First, we had to find one side of the square, which would be 76.4 divided by 4, then multiply that by the square root of 2.

76.4 / 4 = 19.1

19.1 x sq. rt. of 2 = 27.0114790413, or about 27.01

Subscriptions to a popular fashion magazine have gone down by a consistent percentage each year and can be modeled by the function y = 42,000(0.96)t. What does the value 42,000 represent in the function? A) The decay factor of subscribers. B) The initial number of subscribers. C) The number of time intervals. D) The number of subscribers after t years. Submit

Answers

Answer:

B) The initial number of subscribers.

Step-by-step explanation:

The given equation is:

[tex]y=42000(0.96)^{t}[/tex]

[tex]y=42000(1-0.04)^{t}[/tex]

We can compare this equation with the general model of exponential growth/decay:

[tex]y=A(1-r)^{t}[/tex]

Here A represents the initial amount, r represents the rate of decay and t represents the time in years.

Comparing both equations, we can see that 42,000 represents the Initial Quantity which in this case is the initial number of subscribers.

So option B gives us the correct answer.

Answer:

B) the initial number of subscribers

Step-by-step explanation:

Between what two consecutive integers does .... lies?

Answers

Answer: third option

Step-by-step explanation:

To solve the exercise you must apply the proccedure shown below:

- Find the value of irrational number given in the problem (By definition, an irrational number cannot be written as a simple fraction, where the numerator and the denominators are integer.

- Then the value in decimal number is the following:

[tex]\sqrt{115}=10.72[/tex]

- The number 10.72 is located between the integer 10 and the integer 11.

Determine whether the table could represent a function that is linear, exponential, or neither. If the function is exponential or linear, find a function that passes through the points. If the function is neither exponential nor linear, type NONE.

x 1 2 3 4
f(x)70 40 10 -20
f(x)=

Answers

Answer:

Linear

y = -30x + 100

Step-by-step explanation:

The table has a set of inputs with matching outputs. The behavior of the outputs will determine the type of function. The outputs appear to descend at a constant subtraction rate of -30 each time.

70 - 30 = 40

40 - 30 = 10

10 - 30 = -20

etc.

A constant addition or subtraction rate is a slope. Since the function has a slope, this is a linear function.

To write the function you'll need a slope and a y-intercept. Recall, the y-intercept is where x = 0. This is not in the table but can be found by reversing the process by adding 30 + 70 = 100.

Substitute m = -30 and b = 100 into y = mx+b for the equation.

y = -30x + 100

Answer:

Step-by-step explanation:

the answer is f(x)= 100-30x

Please help find missing angle

Answers

a=1, c=25/7(3.571429) b=?
c=hypotenuse
a=side

In this case, we are finding for a SIDE and not the HYPOTENUSE.

Using Pythagoras' theorem
side²= hyp²–side²
b²= 3.57²–1²
b²= 12.7–1
b²= 11.7
b²= √11.7
b²= 3.4(correct to 1 dp)

Therefore, b= 3.4

HOPE THIS HELPS.... IF NOT I'M SO SORRY :'(
IF IT HELPS YOU PLEASE THANK ME AND GIVE ME BRAINLIEST :)

Answer:

[tex]\frac{24}{7}=b[/tex]

Step-by-step explanation:

We are given a right angled triangle.

Hypotenuse = c = [tex]\frac{25}{7}[/tex]

Base = a = 1

Now we are supposed to find the perpendicular i.e. b

So, we will use Pythagoras Theorem  :

[tex]Hypotenuse^2=Perpendicular^2+Base^2[/tex]

[tex]c^2=b^2+a^2[/tex]

[tex](\frac{25}{7})^2=b^2+1^2[/tex]

[tex]\frac{625}{49}=b^2+1[/tex]

[tex]\sqrt{\frac{625}{49}-1}=b[/tex]

[tex]\frac{24}{7}=b[/tex]

Hence the missing length is [tex]\frac{24}{7}[/tex].

Which number is a factor of 8?

4
7
5
6

Answers

Answer:

4

Step-by-step explanation:

[tex]The\ factors\ of\ 8:\ 1,\ 2,\ 4,\ 8\\\\8=1\cdot8\\8=2\cdot\boxed4\\8=4\cdot2\\8=8\cdot1[/tex]

4 is the correct answer

What is the solution to the proportion 8/x = 4/5

Answers

♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫

➷ Since 8/x is two times the size of 4/5, you multiply by 2

4/5=8/10

X=10

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

DOGE

Brainliest! To best answer! Better answer fast or no brainliest!
Which of the following is a statistical question?
A.
How many questions are there on Ben's math test?
B.
What are the shoe sizes of players on the soccer team?
C.
How many chocolates did Bertha sell today?
D.
How many students are there in Kathy's class?

Answers

Answer:

B

Step-by-step explanation:

A statistical question has to be a question that can be answered by collecting data that varies.

Answer:

B.   What are the shoe sizes of players on the soccer team?

Step-by-step explanation:

A statistical question is one that can be answered by collecting data and where that data will vary.

We do not need to collect data to determine the number of questions on Ben's math test.

There is no variability in the number of chocolates Bertha sells in one day, nor in the number of students in Kathy's class.

To determine the shoe sizes of players on the soccer team, we must collect the data and the data will vary from player to player.  This is the statistical question.

Need so much help with number 3

Answers

Answer:

Judy is 12 Years old.

Step-by-step explanation:

Add up all the ages and you get 43 years old. Subtract 55 by the 43 to get 12 meaning Judy is 12. Please mark brainliest.

Answer:

Judy's age is 12 years old

Step-by-step explanation:

to find the average you need to add all numbers up ans then divide by how many there are.

10 + 10 + 11 + 12 + 12 = 55/5 = 11

hope this helps

the inequality 6-2/3

Answers

16 over 3 is the answer u write the numerator above the denominator 6 over 1 minus 2 over 3 6 times 3 over 1 x3 minus 2 over 3 u get 18 minus 2 over 3 and subtract 18 and 2 u get 16 over 3

Answer:

x>9

Step-by-step explanation:

       

Simplify   2/3

           (6 -  (— • x)) -  (x - 9)  < 0  

        3          

need help with number 29

Answers

Answer:

9c

Step-by-step explanation:

Collecting like terms

We can do 8-6 which is 2

and then 2 add 7 which is 9

Add c

Find the surface area of a cylinder

Answers

A = 2•3.14•3•8 + 2•3.14•3^2 = 207.34512

Answer:

Surface area = 207.24 in²

Step-by-step explanation:

Remember to always convert the diameter into a radius.

D = 6 in (divide it by two to get the radius) R = 3 in

Radius = 3 in

Formula:

SA = 2[tex]\pi[/tex]rh + 2[tex]\pi[/tex]r²

Solution:

SA = 2[tex]\pi[/tex]rh + 2[tex]\pi[/tex]r²

SA = 2(3.14)(3)(8) + 2(3.14)(3)

SA = 2(3.14)(3)(8) + 2(3.14)(9)

SA = 150.72 + 56.52

SA = 207.24 in²

Janet is 6 years younger than Safiya.How old is each girl if the suk of their ages is 26

Answers

Answer:

20.  26-6=20

Step-by-step explanation:

given 8y — 6x =8 :

A) transform the equation into slope-intercept form.

b) find the slope and y-intercept of the line.

c) what is the slope of a line parallel to this line?

d) what is the slope of a line perpendicular to this line ?

e) find the equation, in point-slope form, of the line that is perpendicular to this line and passes through the point (0,2).

Answers

Answer:

Step-by-step explanation:

A:  slope-intercept form:  Solve 8y — 6x =8 for y, as follows:  8y = 6x + 8, so that y = (3/4)x + 1.

B:  Slope:  3/4; y-intercept:  (0, 1)

C:  Any line parallel to this line has the same slope, namely, 3/4.

D:  Any line perpendicular to this line has a slope that is the negative reciprocal of 3/4; that is, the slope of the perp. line is -4/3.

he product of ten and a number is greater than the difference of four times the number and two.

Answers

Answer:

You can use 1 as a solution.

Step-by-step explanation:

10 + 1 = 11

1 * 4 = 4

4 - 2 = 2

11 > 2

Type in all the digits of Pi

I have a picture. Type in all of them. Get 30 points.

Answers

Answer:

PI= 3.1415926535897932384624338327950288419716939937510582097494459230781640628620899862803482534211706798214808651328230664709384460955058

Pi is a Mathematics constant that represents the ratio of a circle's circumference to its diameter. Its decimal representation is approximately 3.14.

The value of Pi is a mathematical constant that represents the ratio of a circle's circumference to its diameter.

The decimal representation of Pi is approximately 3.14159265358979323846264338327.

However, it is important to note that Pi is an irrational number, which means its decimal representation goes on infinitely without repeating.

Learn more about Mathematics here:

https://brainly.com/question/27235369

#SPJ12

The probable question may be:

Type in all the digits of Pi

I have a picture. Type in all of them. Get 30 points.

A slice of PI

******************

****************

3.14159265358979

323846264338327

95028841971693

9937510582097

 494459230781

  64062862089

   9862803482

     534211706

      79821480

       8651328

        230664

         70938

          4460

           955

            05

             8

How many oatmeal cookies are @ the party?

Answers

Answer:

15 oatmeal

Step-by-step explanation:

Add by 5 for each one

Answer: 15 Oatmeal Cookies

Step-by-step explanation: 8 Boxes 3 Boxes For Oatmeal Rasian 3x5 = 15

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