What is the solution to the proportion? 6/15 = x/20 b? a. x = 12 b. x = 8 c. x = 4.5 d. x = 2.5

QUESTION POSTED AT 19/08/2019 - 05:51 PM

Answered by answersmine AT 19/08/2019 - 05:51 PM

Yep, b is correct

6/15=x/20
15x=6(20)
15x=120
15x/15=120/15
x=8
Post your answer

Related questions

Braden has 10 red model cars, which are 2/5 of the total number of cars in his collection. How many cars does Braden have in his collection? A) 4 B) 10 C) 25 D) 50

25 cars, because if 10 cars = 2/5 of his collection that means 5 cars are 1/5. Since 1/5 x 5 = 1, that means there are 25 cars in his collection. (5x5 = 25)

ANSWERED AT 23/09/2019 - 04:25 AM


QUESTION POSTED AT 23/09/2019 - 04:25 AM

A boat that costs $8550 decreases in value by 12% per year. How much will the boat be worth after 3 years?

You have to take $8,550 times 0.12 (12%) to find out the number it is being decreased by.
8,550 x 0.12 = 1,026
And then, you have to subtract 1,026 from 8,550 three times for three years and your answer becomes 5,472.
$5,472

ANSWERED AT 23/09/2019 - 04:25 AM


QUESTION POSTED AT 23/09/2019 - 04:25 AM

A grandmother says her grandson is two years older than her granddaughter and that together;they are at least 12 years old. How old are her grandson and granddaughter

What do you mean at least 12 
either way
the grandson will be at least 8
and the granddaughter will be at least 4

ANSWERED AT 23/09/2019 - 04:25 AM


QUESTION POSTED AT 23/09/2019 - 04:25 AM

Use the graph to state the solution for the system. (In other words, what is the solution for the system?) x+2y=4 (line a) 3x-2y=4 (line b)

(2,1) is the solution because its where they both intersect..

ANSWERED AT 23/09/2019 - 04:25 AM


QUESTION POSTED AT 23/09/2019 - 04:25 AM

You are given the table below. x 4 8 12 16 20 f(x) 11 25 16 9 31 Use the table and n = 4 to estimate the following. Because the data is not monotone (only increasing or only decreasing), you should sketch a possible graph and draw the rectangles. 20 (integral) f(x)dx 4

Solution:

X      4      8       12       16          20

F(x)   11      25      16       9           31

A function is said to be increasing if , x_{1}> x_{2}, then f(x_{1})>f(x_{2}) {\text{and decreasing if } x_{1}> x_{2}, then f(x_{1})<f(x_{2}).

As you can see from the table given as x increases , f(x) increases as well as decreases.

So it is increasing as well as decreasing function.

Now plotting the graph on two dimensional coordinate plane and drawn perpendicular from these points on X axis.

\int_{4}^{20}f(x)dx=\int_{4}^{8}f(x)dx+\int_{8}^{12}f(x)dx+\int_{12}^{16}f(x)dx+\int_{16}^{20}f(x)dx

Equation of line joining two points (x_{1},y_{1}), and (x_{2},y_{2}) is \frac{y-y_{1}}{x-x_{1}}=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}

Equation of line joining two points (4,11) and (8,25) is

4(y-11)=14(x-4)

4 y -44 = 14 x -56

4 y = 14 x -12

y= \frac{7x}{2}-3 --------(1)

Area under line (1) is

\int_{4}^{8}f(x)dx=\int_{4}^{8}(\frac{7x}{2}-3) dx=\frac{7x^2}{4}-3x\left \{ {{x=8} \atop {x=4}} \right. =112-24-28+12=72

Equation of line joining (8,25) and (12,16) is

4(y-25 )= -9(x-8)

4 y - 100= -9 x + 72

4 y = -9 x + 172

y = \frac{-9x}{4} +43--------(2)

Area under line 2 is

\int_{8}^{12}f(x)dx=\int_{8}^{12}(\frac{-9x}{4} +43)dx=\left \{ {{x=12} \atop {x=8}}   \frac{-9x^2}{8} +43x = -162 +516+72-344=82

Equation of line joining (12,16) and (16,9) is

-4(y-16) = 7(x-12)

-4 y + 64= 7 x -84

-4 y = 7 x -148

y = \frac{-7x}{4} +37-----------(3)

Area under the line 3 is

\int_{12}^{16}f(x)dx=\int_{12}^{16}(\frac{-7 x}{4} +37)dx=\left \{ {{x=16} \atop {x=12}}   \frac{-7x^2}{8} +37 x = -224 +592+126-444=50

Equation of line joining (16,9) and (20,31) is

4(y-9) = 22(x-16)

4 y - 36 = 22 x - 352

4 y = 22 x - 316

y= \frac{11x}{2}-79---------(4)

Area under the line 4 is

\int_{16}^{20}f(x)dx=\int_{16}^{20}(\frac{11 x}{2} -79)dx

=\left \{ {{x=20} \atop {x=16}}   \frac{11x^2}{4} -79 x = 1100-1580-704+1264=2364-2284=80


Total Area = Area under the line (1+2+3+4)

=\int_{4}^{20}f(x)dx=\int_{4}^{8}f(x)dx+\int_{8}^{12}f(x)dx+\int_{12}^{16}f(x)dx+\int_{16}^{20}f(x)dx

= 72 +82+50+80

= 284 square units

You can find area using the formual of area of trapezoid which is = \frac{1}{2}[Sum of parallel sides]× [perpendicular distance between them]

ANSWERED AT 23/09/2019 - 04:25 AM


QUESTION POSTED AT 23/09/2019 - 04:25 AM

A grocery store has small bags of peanuts for $3 and large bags of peanuts for 5$. if you buy 12 bags and spend $42 how many of each size bag did you buy

I have the answer
i just can't show you, hold on a second

ANSWERED AT 23/09/2019 - 04:24 AM


QUESTION POSTED AT 23/09/2019 - 04:24 AM

Prove that a line that divides two sides of a triangle proportionally is parallel to the third side. Be sure to create and name the appropriate geometric figures.

Wait i want to say a median cause a median is connected to a midpoint ad a midpoint divides a segment into 2 congruent segment, or i guess you cant use a reflexive property, i feel like i'm saying nonesense

ANSWERED AT 23/09/2019 - 04:24 AM


QUESTION POSTED AT 23/09/2019 - 04:24 AM

Make This Division Sentence True: _____ / _____ = 25 Reminder 7

107/4 equals 25 remainder 7

ANSWERED AT 23/09/2019 - 04:23 AM


QUESTION POSTED AT 23/09/2019 - 04:23 AM

21 = m + 9; m= 11 solution

21-9=12
M=12
12 +9=21
your answer is M=12

ANSWERED AT 23/09/2019 - 04:23 AM


QUESTION POSTED AT 23/09/2019 - 04:23 AM

A jewelry is designing a gift box. The sum of the length, width, and height is 12. Graph to find the needed dimensions of the box to maximize the volume. Find the volume.

The Volume of the box has to equal 64

because all the sides have to equal 12

and 12/3 = 4 

mark hers as brainliest plz ^-^

Thanks!

ANSWERED AT 23/09/2019 - 04:22 AM


QUESTION POSTED AT 23/09/2019 - 04:22 AM

Determine whether the cost for ordering multiple items that will be delivered is sometimes, always or never proportional. Explain your reasoning?

It could sometimes be proportional. The reasoning here is that if all the items have different prices it won't be, however if the items you are ordering all have the same price they will be!

ANSWERED AT 23/09/2019 - 04:21 AM


QUESTION POSTED AT 23/09/2019 - 04:21 AM

Equivalent ratios to 16:12 and 12:16

It is 36:24 and 24:36, as what I know of

ANSWERED AT 23/09/2019 - 04:21 AM


QUESTION POSTED AT 23/09/2019 - 04:21 AM

I don't know how to answer this....Is it proportional and if it is how do you know...if it's not why is it not?!!Please Help!!

Hi , the table shows a non proportional relationship , because the table doesn't start at zero and because there isn't a specific pattern.

ANSWERED AT 23/09/2019 - 04:20 AM


QUESTION POSTED AT 23/09/2019 - 04:20 AM

Taylor is 2/3 as old as her cousin. the sum of their ages is 45. how old are taylor and her cousin

Her cousin is 27 and Taylor is 18 years old

ANSWERED AT 23/09/2019 - 04:20 AM


QUESTION POSTED AT 23/09/2019 - 04:20 AM

A store pays $25 for a desk chair. The store marks up the price by 40% . What is the new price?

25 x (40/100) = x
x = $10

So the 40% is $10
THUS, 25+10 = 35
Hence, the new price is $35

ANSWERED AT 23/09/2019 - 04:19 AM


QUESTION POSTED AT 23/09/2019 - 04:19 AM

49 x 12 =_________________ twelves

588 is your answer hope it helps

ANSWERED AT 23/09/2019 - 04:18 AM


QUESTION POSTED AT 23/09/2019 - 04:18 AM

Solve The Equation Please 4 2/5x = 12 1/10 A) 7 7/10 B) 2 3/4 C) 2 1/2 D) 4/11

The answer for the equation 4 2/5x = 12 1/10 is B 2 3/4 

ANSWERED AT 23/09/2019 - 04:17 AM


QUESTION POSTED AT 23/09/2019 - 04:17 AM

The number that cannot be a solution to the inequality x > -3 is

The number is 3 because is positive

ANSWERED AT 23/09/2019 - 04:11 AM


QUESTION POSTED AT 23/09/2019 - 04:11 AM

April can mow 3/8 of an acre of grass in 45 minutes. How many acres of grass does April mow per hour?

April mows 4/8 of an acre of grass per hour
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ANSWERED AT 23/09/2019 - 04:10 AM


QUESTION POSTED AT 23/09/2019 - 04:10 AM

Jose wanted to ride his bicycle for a distance of 12 miles, but it broke down after he went only 25% of his distance. How many miles did Jose travel on his bike before it broke down?

Answer: Jose traveled 3 miles on his bike before it broke down.

Step-by-step explanation:

Given : Jose wanted to ride his bicycle for a distance = 12 miles

Cycle broke down after he went only 25% of his distance i.e = \frac{25}{100}\times 12miles=3miles

Thus Jose travelled for 3 miles before his bike broke down and he still has (12-3)= 9 miles of his distance to cover.

Thus  Jose traveled 3 miles on his bike before it broke down.

ANSWERED AT 23/09/2019 - 04:09 AM


QUESTION POSTED AT 23/09/2019 - 04:09 AM

A square window has a perimeter of (8x + 12) feet. Write an expression that represents the side length of the window. (in feet)

8x+12=p so you would take away 12 from p making the equation 8x=p-12 and then divide that by 8 so the equation is x= p-12/8 ( x equals p minus 12 over 8)

ANSWERED AT 23/09/2019 - 04:08 AM


QUESTION POSTED AT 23/09/2019 - 04:08 AM

What two numbers added get you 25 but multiplyed gets you 8

Well, you could have 2 numbers to get  25 but it is impossible to get 8 unless you divided by a random number

ANSWERED AT 23/09/2019 - 04:07 AM


QUESTION POSTED AT 23/09/2019 - 04:07 AM

A statue that is 12 ft tall casts a shadow that is 15 ft long. find the length of the shadow that a 8 ft cardboard box casts.

I believe the shadow would be 10 feet 

ANSWERED AT 23/09/2019 - 04:07 AM


QUESTION POSTED AT 23/09/2019 - 04:07 AM

The quotient of y and 3 is 25

Answer:

\frac{y}{3} = 25  ,  y = 75 .

Step-by-step explanation:

Given  : quotient of y and 3 is 25.

To find : solve for y.

Solution : We have given statement quotient of y and 3 is 25.

According to question

quotient of y and 3 can be written as  \frac{y}{3}.

Then ,

\frac{y}{3} = 25

On multiplying  by 3 both sides

y = 25 *3

y = 75 .

Therefore,   \frac{y}{3} = 25  , y = 75 .

ANSWERED AT 23/09/2019 - 04:07 AM


QUESTION POSTED AT 23/09/2019 - 04:07 AM