Mathematics Middle School

You can solve the following proportion by cross multiplying. What will the equation be after you cross multiply?

3/9 = x/15

You Can Solve The Following Proportion By Cross Multiplying. What Will The Equation Be After You Cross

Answers

Answer 1
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

3/9-(x/15)=0
x
Simplify ——
15

3 x
—— —— = 0
9 15

1
Simplify ——
3

1 x
—— —— = 0
3 15

... the answer is : x = 5
Answer 2
X = 5 is the answer

Related Questions

Please help ASAP with these problems!
Prove that: (12^13-12^12+12^11)(11^9-11^8+11^7) is divisible by 3, 7, 19, and 37. _ times 3 times 7 times 19 times 37
Factor completely: (4x^a+2)+20x^a
Factor completely: (15x^2c+3)-(25x^c+1)

Answers

Answer:

HUH

Step-by-step explanation:

you gotta write that out again because.

use the distributive property to expand expressions.
4(9x + 3y)

Answers

Answer:

36x+12y

Step-by-step explanation:

If you multiply them you get that. Hope this helps, let me know if correct!!

oh lord help :,) please and thank you

Answers

Answer:

The answer is 19.10 $

Step-by-step explanation:

Answer:

I believe the answer is 7.04+1.34x= Y The value of the card in 2004 was 19.10.

Step-by-step explanation:

f If you subtract 2004 by 1995 you get 9 and if you multiply it by 1.34 you get 12.06. But then you add 7.04. Hope this helps and let me know if correct!!

Martin is comparing two different video game stores.


*At Best Buy, the equation c=59.99g


*At PC Richard & Son, the cost of 2 games is $117.96, and the cost of 5 games is $294.90


How much money, per game would Martin save by going to the less expensive gas station?

If you don’t know plz don’t answer it :))

Answers

He would save $4.34 every game because when you always

If a number and a variable are together with no sign between them, what operation does that show?

Answers

Answer:

Multiplication

Step-by-step explanation:

If you were to solve 8x x x, you wouldn't know what that means. So, normal people place variables and numbers together to represent multiplication.

You earn $56 walking your neighbor's dog for 8 hours. Your friend earns $36 painting your neighbor's fence for 4 hours.
What is your pay rate? And What is your friend's pay rate?

Answers

Answer:

Your pay rate is:  

$ 7  per hour

Your friend's pay rate is  :

$ 9  per hour

Explanation:

So if it takes you  8  hours to make  $ 56 , you can just divide the total money earned by the time.  So it would be  56 ÷ 8  which is  7 .

And if takes your friend  4  hours to make  $ 36 , you can divide like we just did . So it would be  36 ÷ 4  which is  9 .

So you make  $ 7  per hour and your friend makes  $ 9 per hour.

you would divide 56 by 8 to get 7. which is your pay rate. Then you would divide 36 by 4 to get 9. which is your friends pay rate.

i need help ! please asap!!!!

Answers

Answer:

C & F

Step-by-step explanation:

29 - 13 is 16 and 46 - 21 is 25. Everything else is wrong because the differences are not the correct answers except for C and F. Sorry if this sounds kinda confusing

This is probably wrong so...

Write an equation for the trend line shown

Answers

Answer:

y= -x + 225

Step-by-step explanation:

it has a negative slope so -x

it crosses the y axis at (0,225)

so put it together and you get -x+225

Ms. Hassan plans to serve appetizers at her Christmas party. She plans on offering 8 appetizers for every 3 people. If she has 240 people RSVP to the Christmas party, then how many appetizers will she serve?

Answers

Answer:

I hope this is right. If not im sorry.

Step-by-step explanation:

240 / 3 = 80

80 * 8 = 640

640?

Answer: 640

Step-by-step explanation:

Complete the table using the equation y = 4x + 8.

Answers

Answer:

For 0 = 8

For 1 = 12

For 2 = 16

For 3 = 20

For -1 = 4

Evaluate the expression 2(5x -3y) if x = -1/2 and y = 1

Answers

the answer is -11!
once plugged in, the new equation would be 2(-2.5 -3)
this would equal 2(-5.5)
the final answer would be -11

The difference between a number р and 6 is –14.

Answers

Answer is -20. Do you want the step by step solution?
equation: p - 6 = -14
solution: -8

Help MMEEEE PLKEASEEss.

Answers

Answer:

the answer is180.

Step-by-step explanation:

180 is the answer, hope this helps

Please help, I need help on this math question

Answers

c is the correct one

Answer:

Probably C

Step-by-step explanation:

Repeating Decimal: a decimal where a number or a pattern of numbers repeats forever

For example, 0.2222... or 0.671671....  (The "..." means that it repeats like that forever)

A. 3/7=  0.142857142857142857... (6 repeating digits)  This is a repeating decimal because the last six digits continue forever

B. 3/4=0.75. This number is not a repeating decimal because a repeating decimal goes on forever, while this only has two decimal places.

C. 1/9= 0.11111... This is a repeating decimal because it goes on forever and has a pattern (all are 1s)

D. 5/11=0.454545... This is also a repeating decimal because the last two digits repeat forever.

There is probably something wrong with the question (or your unit) because three of these numbers are, in fact, repeating decimals. If I were you, I would ask your teacher (it gets you respect from the teacher=more chance that they'll be lenient with you)

But if you really don't want to, I would go with "C" because it only has one repeating decimal place, and your curriculum probably says that a repeating decimal is only one digit.

Good Luck! :)

pls go do another problem if u dont know how tod this....... Simplify −9+1/4x−6−1/8x show your work

Answers

Answer:

-15 + 1/8x

Step-by-step explanation:

calculate the difference

-9 +-6 = -15  then

1/4x -1/8x =1/8x

solution -15+1/8x

How to subtract 1/4x =1/8x   ( this should help )

1/4x -1/8 x    get the least common denominator  which is 2

2x/2x4 -x/8    multiply the numbers

2x/8 - x/8        collect like terms  (factor x/8 as 1/8) 1/8x

-15 +1/8x is the answer

Rectangle WXYZ with vertices W(-1,4), X(-1,1), Y(5,1), and Z(5,4). What is the perimeter?
HELP PLEASE I WILL GIVE BRAINLIEST TO BEST ANSWER AND 20 POINTS!!!!

Answers

Answer:

umm 14? hold on imma come back:)

4y (4y - 4) - 4 (-4 + 5 + 4y²)

please simplify <3

Answers

Answer:

16y - 4

Step-by-step explanation:

4y(4y - 4) - 4(- 4 + 5 + 4y^2)

16y - 16y - 4(1 + 4y^2)

16y - 16y - 4(4y^2 + 1)

16y^2 - 16y^2 + 4

16y - 4

can you help me out its eazy if yk it. i would do it myself but this was due before midnight and its pass midnight now and i got other assignments to do i will give brainliest if it RIGHT.

Answers

Answer: .1.) 28.8

9.) 150 ft

8.) 630 ft

10.) 5'10"

Step-by-step explanation:. Ratios set up as fractions. 12/25 :x/60

cross multiply. 12 × 60 = 720. Divide by denominator if left side.

720/25 = 28.88

I need help
I know I should know but I don´t know it

Answers

Answer:

It's the second option

Step-by-step explanation:

the answer should be 233 but he got 243 because he forgot to regroup

Answer: Grant did not regroup the 4 tens when he subtracted 7.

Everything else he did was correct! When got down to the bottom he made a mistake.

Because there was a zero, grant should have token away from the 4 in which it would become a 3 and given to the 0 so it would become a 1. Due to the fact that he did not do this he got it wrong.

Hope this helps:)

Find the value of (3/4)²

Answers

Answer:

The answer is 9/16

Square the values in the bracket

0.5625 I think not sure

one more, i promise lm`ao


Read the following statement: Line segment CD is congruent to line segment XY.

Which of the following is an equivalent statement?

A) CD overbar is similar to XY overbar
B) CD overbar is congruent to XY overbar
C) CD overbar equals XY overbar
D) CD overbar is an element of XY overbar

Answers

The answer is c because c is crying and u is passing hit
Congruent means the same or equals to so CD and XY are the same.

What is the value of x

Answers

Answer: 9

Step-by-step explanation:

Answer: 9cm

Step-by-step explanation:

help me and i will friend u

Answers

II is the answer to it

helppppppppp meeeeeeeeeeeee

Answers

The first question is (A) you can use demos the graphing calculator to help you with those problems.

That's all I know lol

Answer:

I THINK THE CORDINATES ARE (4,1)

Step-by-step explanation:

I MIGHT BE WRONG AND IF SO I AM SORRY

A bag contains:

5 red blocks

6 yellow blocks,

9 blue blocks.

What is the ratio of yellow blocks to total blocks?

1Points
A 14/6


B 14/20

C
6 to 20

D
6:14

Answers

6 to 20 because there 6 yellow blocks and 20 other blocks in total

Mary and Julie both have a goal of raising $1000 for
charity. Mary raises $12 every 4 days. Julie raises $19
every 6 days.
Will Mary or Julie reach her goal first? Explain.

This is the sample response… Mary would have a rise of 12 and a run of 4, making her slope, or rate of change, $3 a day. Julie would have a rise of 19 and a slope of 6, making her slope, or rate of change, $3.17 a day. Since Julie is raising money at a faster rate, she would get to the goal of $1000 first.

This is the info that you should include in your response… Mary has a rise of 12 and a run of 4. Mary has a slope of 3. Julie has a rise of 19 and a run of 6. Julie has a slope of 19/6 or 3 and 1/6. Julie will reach her goal first, as she has the greater slope.

Use this information at your advantage.
Hope this helps! :))

Answers

Answer:

Julie will reach her goal first because she raises $19 every 6 days so she is working 6 days out of one week. So she will get to her goal first.

Step-by-step explanation:

Julie cuz she makes $3.17 a day while Mary makes $3 a day. (I need points lol-)

Use the table that shows the prices of different amounts of mixed fruit at the grocery store. Please help

Answers

Answer:

29.25

Step-by-step explanation:

This is a simple function table we are working with, so we see that 2 (pounds) would cost around $4.50. So Next we look at 4 would equal $9. By doing this I divide 9 by 4 to get the answer of 2.25. This is are new function table rule of C=P x 2.25. Now that we have this we know that 13 is are P (pounds) and we are looking for are C (cost) After we input 13 into are function rule. We get the answer of $29.25.

Answer:  well 14 pounds cost $31.50

so that means 13 pounds cost $29.50

                               

Step-by-step explanation:

Explain the rules for multiplication and division to convert units. How do you know when to multiply and when to divide to convert units of measurement?

Write three to four sentences.

Answers

To convert larger units to smaller units mulitply when the units are smaller you need more pf them to express the same measure. To convert smaller units to larger units, divide. When the units are larger, you need fewer of them to express the same measure.

Answer:

To convert greater units to smaller units you mulitply. When the units are smaller you need more to express the same measure. When you have to  convert smaller units to larger units, divide. When the units are bigger, you need less of them to be the same measure.

Step-by-step explanation:

I re-worded this so It wouldnt be like the sample response. Have a great time doing whatever your doing.

I need help!! Please ASAP! will mark brainliest

Answers

Answer: I wanna go with 20,000

Step-by-step explanation:

2,000. It's usually the best answer :)

HELP ME OUT WITH THIS MATH QUESTION

Answers

Answer:

I believe it would be the second one i'm not exactly sure.

Step-by-step explanation:

It’s the second one B)
Hope this help ;)
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