Suppose y varies directly as x, if y = 15 when x = 12, find x when y = 21.

Answers

Answer 1

Answer: x = 26

                    1

                     -

                     4

Answer 2

Answer:

16.8

Step-by-step explanation:

we have to do  Unitary method.

when y=15 then x=12

when y=1 the x=12/15

when y=21 then x=(12*21)/15

x=16.8


Related Questions

Find the zeros of f (x) = 8x^2 - 1.
The zeros are x = ___and x___​

Answers

Answer:

x=[tex]\sqrt{2}[/tex]/4 and x=-[tex]\sqrt{2}[/tex]/4

Step-by-step explanation:

One method of solving is using the Quadratic Formula: -b ±[tex]\sqrt{b^{2}-4ac }[/tex]/2a, with a=8, b=0, and c=-1.

After plugging these values in you get -0±[tex]\sqrt{0^2-(4*8*-1)}[/tex]/2*8

After simplifying you get ±[tex]\sqrt{32}[/tex]/16

Because 32 is 2^5, you can simplify it to 4[tex]\sqrt{2}[/tex], which makes the equation ±4[tex]\sqrt{2}[/tex]/16, or ±[tex]\sqrt{2}[/tex]/4.

Sarah wants to
install new carpet in her living room.
The small square is tiled and will not be
carpeted. How many square yards of
carpet will she need?

Answers

Answer:

24 yd^2

Step-by-step explanation:

6yd * 4yd = 24 yd^2

which relation is also a function

Answers

I think its A. trust me. peksman. tiwala lang. kasi a function should be unique domains

It is 12:49 what time it will be 30 minutes from now

Answers

Answer:

01:19 PM

Step-by-step explanation:

if its 12:49 then in 30 minutes it'll be 1:19pm

because

in 11 minutes I'll be 1pm and then 30-11= 19

so

1pm + 19 mins = 1:19pm

Hope this helped you- have a good day bro cya)

Answer:

1:19 pm

Hope you have an amazing day!

Find the slope of the line that goes through the given points. (2,2) and (3,2)

Answers

Answer:

0

Step-by-step explanation:

We can use the slope formula to find the slope

m = ( y2-y1)/(x2-x1)

 = ( 2-2)/(3-2)

  = 0/1

  = 0

Find the upper quartile for the data. {9, 6, 13, 8, 8, 10, 9.5, 8, 7.5, 8.5}
A. 9
B. 9.5
C. 10
D. 8.5

Answers

Answer:

the answer is 9.5 (B)

Step-by-step explanation:

A laboratory is testing a product by heating or cooling it at different rates. The table shows the results of four tests. Drag a number to each empty cell to complete the table.


ill give brainliest

Answers

Answer:Cell content

Started at 20° and dropped 4° each minute                      -4

Cell content

Started at −20° and rose 1° each minute                              1

Cell content

Started at 20° and dropped 1° each minute                       -1

Cell content

Started at −20° and rose 4° each minute                             1

Step-by-step explanation:

Answer:

Cell content

Started at 20° and dropped 4° each minute                      -4

Cell content

Started at −20° and rose 1° each minute                              1

Cell content

Started at 20° and dropped 1° each minute                       -1

Cell content

Started at −20° and rose 4° each minute                             1

Step-by-step explanation:

There are 6 yellow, 4 orange, 2 green, and five blue plastic building blocks all the same
size in a bag. What is the probability of selecting an orange, putting it back, then
а
selecting a block that is not orange.

Answers

We want to get the probability of selecting an orange, putting it back, then  selecting a block that is not orange.

We will see that the probability is P = 0.1799

In the bag we have:

6 yellow blocks4 orange blocks2 green blocks5 blue blocks.

For a total of 6 + 4 + 2 + 5 = 17 blocks.

First we want to find the probability of getting an orange block, as all the blocks have the same probability of being randomly drawn, the probability of randomly drawing an orange block is equal to the quotient between the number of orange blocks and the total number of blocks.

We get:

p = 4/17

Now we put the orange block back and we want to take a block that is not orange, the probability is computed in the same way:

q = (6 + 2 + 5)/17 = 13/17

The joint probability (this is, the probability of these two events happening together) is just the product of the individual probabilities.

We get:

P = p*q = (4/17)*(13/17) = 52/289 = 0.1799

If you want to learn more, you can read:

https://brainly.com/question/1349408

LCM. Problem about how lcm works. picture in comments.

Answers

I can’t find a picture but i can explain how to find the LCM of two numbers.

Let’s say we want to find the LCM of 10 and 12.
We first write the prime factorization of both numbers:
10= 2x5

12= 2*2*3

We multiply the highest degree of the numbers:
That is, 2*2*3*5=60

https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-factors-and-multiples/cc-6th-lcm/v/least-common-multiple-exercise

You can also watch this video to get a better idea on how to find the LCM of two or more numbers.

Hope this helped.

PLEASE PLEASE PLEASE PLEASE HELP ME NO ONE WANTS TO HELP

Answers

Answer:

You have to know the basic properties of exponents.

Jill's answer is wrong because you add the powers when there are like bases. You don't multiply.

[tex]2^{-3} *2^{6} = 2^{3}[/tex]

-3+6=3

The base stays the same.

Neisha ate 1/3 of her birthday cake. If her 3 younger siblings divided the rest equally, what fraction of the cake did they each get?

Answers

Answer:

2/9 each

Step-by-step explanation:

2/3 would be left from neisha, therefore 2/3 divided by three = 2/9.

expand and simplify (3x-1)(x-3)​

Answers

Following are simplifications to the given expression:

Given:

[tex]\bold{(3x-1)(x-3)}[/tex]

To find:

simplify=?

Solution:

[tex]\to \bold{(3x-1)(x-3)}\\\\\to \bold{(3x^2-9x-x+3)}\\\\\to \bold{(3x^2-10x+3)}\\\\[/tex]

Therefore, the final answer is "[tex]\bold{3x^2-10+3}[/tex]".

Learn more:

brainly.com/question/1661958

As a part of raising funds for an orphanage,you received $120.50 and wanted to split the money into
groups of food items; clothes and story books .

a)If you want the same amount for each group, how much money will you put into each group?

b)Imagine if you want to save same amount of the money for stationary items, then how will you split the money into various groups?Justify

c)If you receive an extra money of $9.50 from people, then how much will be saved for each group?(Include all the groups)

Answers

Answer:

a) there are three groups here

total cash = $120.50

each group takes = $120.50 / 3

each group have = $40.17

b) Total no of groups = 4

Total cash = $120.50

each group takes = $120.50 / 4

Each group have = $30.13

c) Total group =4

Total cash = $120.50 + $9.50

=$130

each group have = $130 / 4

=$32.5

Complete the equation. ( − 4 ) 2 =

Answers

Answer:

-16

Step-by-step explanation:

multiply 4x4 and then determine if its negative or positive

-8 This is what I believe it is hopefully this helps

May I please receive help?
Please????

Answers

Answer:

<1=23

Step-by-step explanation:

If WXZ contains both <1 and <2, and <2 is 4 times <1, then we can set this up as x + 4x = 115

This is easily simplified to 5x = 115

Divide both sides by 5 and you will get x=23

13) What are the solutions to y2 = 81?

Answers

Step-by-step explanation:

y²=81

y²=9²

:. bases same powers equal,

y=9.

hope this helps you.

9 would be the y because if you substitute the 9 with the y it would be 9 to the second power which would mean you would multiply 9 • 9

how can I Simplify 13⁰ this ​

Answers

The answer is 1. Please mark brainelist

[tex] = \frac{13\pi}{180} \\ \\ in \: \: alternate \: form \\ \\ = 0226893[/tex]

hope it helps

re! Σ 209 A bus with kids and a truck with their bags started moving from the school to the camp at the same time. The speed of the bus was 60 mph. The speed of the truck was 45 mph. It took kids 3 hours to reach the camp. How long did they have to wait for their bags?​

Answers

My phone number for yo

I need to know how to solve for question number 4 please?

Answers

f(6)=1/3(6) +2
= 4

This is the graph

please help and explain how you got the answer, please and thanks!!!!

Answers

Answer:

[tex](0,-5),(1,-\frac{17}{4} ),(2,-\frac{7}{2} )[/tex]

Quis mode Easy
hasil dari
T²⁵⁴÷T²⁴³=​

Answers

Answer:

T²⁵⁴÷T²⁴³=

T²⁵⁴-²⁴³=

=¹

done and thank you

Courtney has a total of 88 stamps worth $15.56. Some are $0.25 stamps and some are $0.02 stamps. How many of each foes she have?

Answers

Let x = # of 25-cent stamps

y = # of 2-cent stamps

{   x+ y = 88

{ 0.25x + 0.02y = 15.56

60 25-cent stamps 28 2-cent stamps

10 pls pls pls help meeee!

Answers

Answer:

SAS

I THINK CORRECT ME IF IM WRONG

please help me asap if you can!

Answers

Answer:

Step-by-step explanation: -3(m-2)=-9

                                           -3m + 6 = -9

                                           -3m = -15

                                                 m=5

Answer:

[tex]m=5[/tex]

Step-by-step explanation:

[tex]-3(m-2)=-9~(Given)\\\\-3m+6=-9~(Distributive~Property)\\\\-3m+6-6=-9-6~(Addition~Property~of~Equality)\\\\-3m=-15~(Simplify)\\\\\frac{-3m}{-3}=\frac{-15}{-3}~(Division~Property~of~Equality)\\\\m=5~(Simplify)[/tex]

a sloth travels about 7 feet every minute generate the set of ordered pair for the ratio relationship between the total distance traveled y and the number of minutes x for a total of 1,2,3 and 4 minutes then graph the relationship on the coordinate plane and describe the pattern in the graph

Answers

Answer:

this question is very hard

Step-by-step explanation:

234563456768521213457342/1234567213465768676543

Answers

i’m not sure if i understand…

Anne goes out to lunch every Friday. On average she spends around
$18 each time, How much money can she save in one year if she
stops going out for lunch each week?

Answers

Answer:

$936

Step-by-step explanation:

there are about 52 weeks in a year

18*52=936

Hope this helps!

936……………………………………………

Find the distance between points B and N.

Answers

Answer:

5

Step-by-step explanation:

b is at 15

n is at 10

hence -15 - -10=5

positive 5 btw

please help...

The image shows the linear graph for a family that hired a babysitter for a day. The family gave the babysitter some money up front to buy herself some lunch, and then paid her a constant hourly rate for the hours she worked. Click the thumbnail image to see the full size image.


Which 2 of the following statements are TRUE about the Y-INTERCEPT of this line? Select the TWO statements that are accurate.


A.
The y-intercept is 0.

B.
The y-intercept is 10.

C.
The y-intercept tells me that they paid the babysitter $20 to buy her lunch.

D.
The y-intercept tells me that they paid the babysitter $10 to buy her lunch.

Answers

The y-intercept, which represents the point the graph crosses the y-axis, is the point where x = 0, or the usual start of a time based function

The true statements about the y-intercept are;

B. The y-intercept is 10

D. The y-intercept tells me that they paid the babysitter $10 to buy her lunch

Reasons:

The points on the graph are;

[tex]\begin{array}{|c|cc|} \mathbf{Time }&&\mathbf{Cost}\\0&&10\\1&&20\\2&&30\\3&&40\\4&&50\\5&&60\end{array}\right][/tex]

The slope of the graph is therefore; [tex]\dfrac{60 - 50}{5 - 4} = 10[/tex]

The equation of the graph is y - 60 = 10·(x - 5)

y = 10·x - 50 + 60 = 10·x + 10

y = 10·x + 10

The y-intercept is give by the point where the x-value is zero

At the start when x = 0, the amount paid to the baby sitter is y = 10×0 + 10 = 10

Therefore, the y-intercept which is $10, represent the amount the family

paid to the babysitter at the start for her lunch

The correct statements are therefore;

Option B; The y-intercept = 10

Option D; The y-intercept indicates the amount given to the babysitter for

her lunch

Learn more here:

https://brainly.com/question/14431998

Answer:

d and b i did the quiz

Step-by-step explanation:

(9.4 × 10^5) (3.2 × 10^5) =

Answers

Answer: 300, 800,000,000

Step-by-step explanation: 9.4 x 10^5=  940,000

                                              3.2 x 10^5= 320,000

                                              940,000 x 320,000 = 300, 800, 000, 000

Normal:
30.08 x 10^10

Scientific notation:
3.008 x 10^11

Scientific notation and significant figures:
3.0 x 10^11
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