HELP PLZ
Solve each proportion for the variable​

HELP PLZSolve Each Proportion For The Variable

Answers

Answer 1

Answer:

x = -1

Step-by-step explanation:

4/12 can be simplified to 1/3

1         x+2

---  = --------------

3          2x+5

Using cross products

1 ( 2x+5) = 3 (x+2)

Distribute

2x+5 = 3x+6

Subtract 2x from each side

2x+5-2x = 3x+6-2x

5 = x+6

Subtract 6 from each side

5-6 = x+6-6

-1 =x

Answer 2

Answer:

Step-by-step explanation:

Key skills: Proportions, One variable equations, Multiplication, Distribution Property

1) The best approach to this problem is with cross multiplication.

Cross multiplication is where we multiply the numerator of one fraction with the denominator of the other fraction, and the denominator of one fraction with the numerator of the other fraction.

2) Here we would do: 4(2x+5) and 12(x+2)

3) Since this is a proportion --> 4(2x+5) = 12(x+2)

4) Now, we use distribution property to expand both.

4(2x+5) --> 8x+ 20                      12(x+2) --> 12x+24

5) With simplifying we can solve for x:

8x+20=12x+24 We then move the 12x to the left side, and the 20 to the right side:            8x-12x=24-20Now we combine like terms: -4x=4Then we divide by -4 on both sides to solve for x. x=-1

If you plug in x=-1 back into the equation: 4/12= 1/3

4/12 does equal 1/3 so x= -1 is the right answer.

Hope you have a nice day and understood this problem explanation!! :D


Related Questions

One pizza costs 3 times as much as a soda. If the price of one
pizza and a soda is $5, what is the cost of one pizza?

Answers

Answer:

2

Step-by-step explanation:

i don't know step by step but I have this same problem and the answer is 2

Find the next 3 terms of each sequence
1. [4, 8, 12, 16 ...}

Answers

Answer:

20, 24, 28

Step-by-step explanation:

Hope this helps!

5ft is what percent of 37 1/2 ft? I also need 37 1/2 is what percent of 5? Thank you!

Answers

Answer:

13.33333333

Step-by-step explanation:

Answer:

13.33333

Step-by-step explanation:

a ball is launched upward from the ground with an initial velocity of 20 ft/s. The height of the ball at time t is represented by the function h(t). h(t)=-16t^2+20t, where t is measured in seconds and h(t) is measured in feet. drag the values to the lines to complete each sentence.


1. The ball reaches its maximum height when t is ____ seconds.

2. The maximum height of the ball is ____ feet.

3. The balls hits the ground when t is ____ seconds.


OPTIONS: 0.4 0.625 0.8 1.25 5.44 6.25 12.5 25

Answers

Answer:

1.-t₁  =  0,625 s

2.-h(max)  =  6,25 f

3.-t = 1,25 s

Step-by-step explanation:

V₀  =  20 f/s

h(t)  =  - 16*t² + 20*t

h(max)  =  ??

h´(t)  = - 32*t + 20

h(max) will occurs when  V = 0   dh/dt  = 0  then

- 32*t  + 20  = 0

- 32*t  =  -20

t  =  20/32

t₁  =  0,625 s

h(max) = h(0,625)    =  - 16*(0,625)² + 20*0,625

h(max)  =  - 6,25  +  12,5

h(max)  =  6,25 f

c) The ball will hit the ground

t = 2*t₁

t  = 2*0,625

t = 1,25 s

If solved will give brainless

1 . What is the relationship of angles 1 and 2 ?

2. What is the measure of angles 1 and 2?

3. What is the measure of angle 3

4. Each of these triangles would classify by angle to be :

Answers

Answer:

1.) Vertical angles. 2.) 76 degrees. 3.) 36 degrees.

A number x increased by 17 is 106

Answers

Answer:

x = 89

Step-by-step explanation:

106 - 17 = 89

For f(x) = x

2 − 5, find f(0).

Answers

Answer:

f(0)=0

Step-by-step explanation:

If f(x) is x you don't have to do anything to it.

I'm assuming 2 - 5 is like the problem # or something but just in case... that is -3 lol

Please help !!! It’s due today

Answers

Answer: D

Step-by-step explanation:

the second one cant be it because its negative and it would end in a negative result and 3,1 is equal to 2x-5 on the graph

please help will give brainliest ​

Answers

Answer:

53 mph

Step-by-step explanation:

424 / 8 = 53

Sneakers at Mr. Lou's garage sale cost the same price. Alexander paid $90.52 for four pairs. How many pairs of sneakers did Justin buy if he paid $135.78? Write a proportion and use cross products to solve for d, the number of sneakers that David bought

Answers

Answer:

6 pairs

Step-by-step explanation:

Since we are given a ratio/proportion problem and 3 values and 1 variable then we can use the Rule of three to solve this problem. We simply multiply the diagonal values available and divide by the 3 value to find the variable of the ratio like so...

4 pairs  <======>   $90.52

d pairs  <======>   $135.78

(4 * 135.78) / 90.52 = 6 pairs

Finally, we can see that Justin ended up buying a total of 6 pairs of sneakers.

Which of the following statements is not true

Answers

Answer:

A: The slope of AB is

different than the

slope of BC.

I WILL AWARD BRAINLIEST TO RIGHT ANSWER
an airplane 30,000 feet above the ground begins descending at a rate of 2000 feet per minute write a linear model to represent the model

Answers

Answer:

y = -2000x+30000

Step-by-step explanation:

Hi. So, you are just setting up a linear equation using slope intercept data. The slope being -2000 (because it is descending) and the intercept being 30,000 at t=0.

y = -2000x+30000

Hilda adds 5 to a number, then multiplies the sum by negative 2. The result is 6. Write and solve an equation to find the number, x.
What is the number?

Answers

Answer:

I think answer is 3.

Step-by-step explanation:

2+3=52*3=6

Answer:

I think it will be like that:

(X+5)×-2=6

-2x-10=6

-2X=16

X=-8

can anyone help me create the equation of the given parabola .​ is it x^2-x-3?

Answers

Answer:

The function of this parabola is is equal to [tex]f(x) = (x-1)^{2} - 4[/tex]

Step-by-step explanation:

If we look at this picture we cans see that the most bottom point of this parabola is located 4 units below and 1 unit tot he right of the origin point. From here we know tha tthe function will lokk something like this....

[tex]f(x) = (x^-1)^{2} + bx - 4[/tex]

But in our case b is equal to zero and so we get that the following parabola is represented by the following function....

[tex]f(x) = (x-1)^{2} - 4\\[/tex]

(If you don't believe me you can check this function on a graphing site called Desmos)

Three times a number is 4 more than twice the number

Answers

Answer:

3n = 2n + 4

Step-by-step explanation:

That is that as an equation.

independent practice: tangents of circles

Find the value of x in each of the following:
(see picture)

Answers

Answer:

Step-by-step explanation:

9). "Tangent is perpendicular to the radius of a circle"

   By applying Pythagoras theorem in the given triangle,

   x² = 15² + 20²

  x = √625 = 25

10). By applying Pythagoras theorem in the given triangle,

  (r + x)² = r² + 15²

  (8 + x)² = 8² + 225

  8² + x² + 16x = 8² + 225

  x² + 16x = 225

  x² + 16x - 225 = 0

  x² + 25x - 9x - 225 = 0

  x(x + 25) - 9(x + 25) = 0

  (x + 25)(x - 9) = 0

  x = -25, 9

  But x > 0

  Therefore, x = 9 is the answer.

11). By the property of the tangents drawn to the circle from a point,

"Tangents drawn from a point lying outside the circle are equal in measure"

AC = BC

3x + 4 = 40

3x = 36

x = 12

12). By the same property used in question (11)

DE = DC = 4 units

BA = BC = 3 units

x = 4 + 3 = 7 units

7th grade math help me pleaseee :)

Answers

Answer:choice 2

Step-by-step explanation:Combine like terms which are 3x +8x equals 11x

then you do 7-2 which equal 5.And then you add 11 x to 5.

Hope it helps .Brainliest please?

Number 2 is the right answer
You combine like terms , 3x + 8x = 11x and subtract and get 5 .


This is my last question can someone help me with my homework.

Answers

9514 1404 393

Answer:

  C, A, A

Step-by-step explanation:

In general, you ...

identify the coefficients of one of the variablesswap them, and negate one of themmultiply the corresponding equations by the "adjusted" coefficients.

__

In problem 1, the x-coefficients are 8 and 2. A common factor of 2 can be removed so that we're dealing with the numbers 4 and 1. Assuming we want to multiply one of the equations by 1, leaving it unchanged, the value we want to multiply by will be -4. After we swap the coefficients, that multiplier is associated with equation 2:

  multiply equation 2 by -4 . . . (eliminates x)

Likewise, the y-coefficients in problem 1 are -1 and 3. Again, if we want to multiply one of the equations by 1, leaving it unchanged, the coefficient we will change the sign of is -1 (becomes 1). After we swap the coefficients, the multiplier 3 is associated with equation 1:

  multiply equation 1 by 3 . . . (eliminates y)

These two choices are B and A, respectively, so the one that does NOT work for problem 1 is choice C, as indicated below.

__

The other problems are worked in a similar fashion.

the cost per month of making n number of wooden toys is 3n + 30. the income from selling n toys is 6n. how many toys must the company make to make a profit

Answers

Answer:

3×6=18+30=48. so company needs to make 48 toys

Answer:

n > 10, or n = 11. Not sure which answer fits your hw better.

Step-by-step explanation:

6n > 3n + 30

6n-3n > 30

(3n > 30)/3

n > 10

So, you need to sell 10 toys in order to break even, which means you need to make and sell 11 toys at least to make a profit.

Check time!

6(11) > 3(11) +30

66 > 63

2 3/4 divided by 5 1/2

Answers

Answer:  0.5

Step-by-step explanation:

Answer:

.5

Step-by-step explanation:

2.75/5.5=.5

Write the quadratic in standard form please!
-4x+6x^2=-4+3x^2

Answers

-4x +6x²=-4+3x²

6x²-3x²-4x+4=0

3x²-3x+4=0

Please give me the correct answer ​

Answers

Answer:

[tex] \sqrt{149} [/tex]

Step-by-step explanation:

leg 1 squared plus leg 2 squared = 3rd leg squared

Answer: [tex]c = \sqrt{149}[/tex]

Step-by-step explanation:

[tex]a =7 \\b=10\\a^{2} +b^{2}=c^{2}\\7^{2} + 10^{2} =c^{2}\\49 + 100 = c^{2}\\c^{2} = 49 + 100\\c^{2}=149\\\sqrt{c^{2}} =\sqrt{149}\\c = \sqrt{149}[/tex]

Use the Zero Product Property to find the x-intercepts (x+5)(−2x+3)=y

Answers

Answer:

Here you go, hope my handwriting is clear :D

X can either equal -5 or 3/2

Lily, Juliet, and Willow are baking muffins. Lily has 1 1/2 cups of flour, Juliet has 3/4 cup of flour, and Willow has 1 2/6 cups of flour. How many cups of flour do they have altogether?

Answers

Answer: 3 7/12

Step-by-step explanation:

From the question, we are given the information that Lily has 1 1/2 cups of flour, Juliet has 3/4 cup of flour, and Willow has 1 2/6 cups of flour.

The number of cups of flour that they have altogether would be the addition of all the fractions of each girl. This would be:

= 1 1/2 + 3/4 + 1 2/6

The lowest common multiple is 12, therefore we make them have a common denominator

= 1 6/12 + 9/12 + 1 4/12

= 2 19/12

= 2 + 1 7/12

= 3 7/12 cups

math
pls help dudndjrjdjr​

Answers

Answer:

it is not possible

Step-by-step explanation:

6+4=10

10+8=18

so it is not possible

How do you solve: 5In3-2In9

Answers

Answer: uhm is this a SAT

Step-by-step explanation: i'm sorry i didn't asnwer but i can't not subtract that is it 53 In - 29 In?

Question 15(Multiple Choice Worth 1 points)
(03.03 LC)

PLS HELP









PLS HELP


Given the exponential function f(x) = 16(0.75)*, classify the function as exponential growth or decay and determine the percent rate of growth or decay.

Answers

In f(x) = 16(0.75)x the (0.75) does not have a 1 so it is decreasing and if it is only 75% of 16 then it would be losing 25% each time So the exponential decay will be 25%.

What is the value of −4(9 + 6)?

Answers

Answer:

-60

Step-by-step explanation:

1. Add 9 and 6

9+6=15

2. Multiply by -4

-4 times 15

-60

Hal is downloading a file from the internet. So far he has downloaded 25% of the file.

If 10 minutes have passed since he started, how long will it take to download the rest of the file?

Answers

Answer:

30 minutes

Step-by-step explanation:

If it takes 10 minutes to download 25%, and there is 75% left to reach 100%.

25% + 25% +25% = 75% there are 3 25% left thus,

10min + 10min + 10min = 30 minutes left to complete download.

The amount of time in minutes it will take to download the rest of the file

is 30 minutes.

What is the percentage?

A percentage is a value per hundredth. Percentages can be converted into decimals and fractions by dividing the percentage value by a hundred.

Let, 'x' be the number of minutes required to download the complete movie.

Therefore,

25% of 'x' is 10 minutes, This can be numerically expressed as,

(25/100)×x = 10.

0.25x = 10.

x = 10/0.25.

x = 40 minutes.

So, it would take 40 10 = 30 minutes.

learn more about percentages here :

https://brainly.com/question/24159063

#SPJ2

PLEASE HELP ME WITH MY DELTA MATH PLEASEEEE

Answers

Answer:

The range of the graph is {y: y ∈ R, -6 ≤ y ≤ 8}

Step-by-step explanation:

The domain is the set of values of the input (x)

The range is the set of values of the output (y)

In the given figure

∵ x is the input

∴ The set of the values of x is the domain

∵ Y is the output

The set of the values of y is the range

∵ The smallest value of y is -6

∵ The greatest value of y is 8

→ That means values of y of the graph are from -6 to 8

-6 ≤ y ≤ 8

∴ The range = {y : y ∈ R, -6 ≤ y ≤ 8}

The range of the graph is {y: y ∈ R, -6 ≤ y ≤ 8}

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