Mathematics Middle School

In the following proportion, what does y equal?


y=39
4 30


A. 156

B. 13

C. 5.2

D. 1.4

Answers

Answer 1

Answer:

C

Step-by-step explanation:

y / 4 = 39 / 30

y / 4 = 1.3

y / 4 * 4 = 1.3 * 4              (What you do to on side you also do to the other)

y = 5.2

So, your answer should be C, 5.2

Related Questions

Shawna says, “I can begin by dividing each side of the equation by –2.5 to get 5 minus n minus StartFraction 2 over 2.5 EndFraction = Negative StartFraction 15 over 2.5 EndFraction.”
Dexter says, “I can begin by distributing Negative 2.5 to get Negative 12.5 + 2.5 n + 2 = 15.”
Tilana says, “I can begin by multiplying each side of the equation by Negative StartFraction 1 over 2.5 EndFraction to get 5 minus n minus 0.8 = negative 6.”

Which students are correct?
only Shawna and Tilana
only Shawna and Dexter
only Dexter and Tilana
Shawna, Dexter, and Tilana

Answers

Answer:

all are correct  

Shawna, Dexter, and Tilana

are all right

Step-by-step explanation:

can i have brainiest [tex]pretty[/tex] [tex]please[/tex]  

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Which equation could be the one modeled on the following number line?



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

Answers

Answer:

2nd choice

Step-by-step explanation:

hope this helps

Answer:

Number 2! 3+(-5)=(-2)

BRAINLIST WILL BE GIVEN . to answer just just say for example graph one goes with equation 3 and table 4 . this was just a example not the answers . only answer if you know the answer .

Answers

9514 1404 393

Answer:

  (graph, table, equation) = (1, 5, 2), (2, 3, 1), (3, 2, 4), (4, 4, 5), (5, 1, 3)

Step-by-step explanation:

The graphs have the following (slope, intercept), so can be easily matched with the corresponding equation.

  (1/2, 1), (2, -1), (1, 2), (1/2, -1), (-2, -1)

We can look at the points in the tables to see which graph they appear on.

Table 1, (-2, 3) is on graph 5

Table 2, (-3, -1) is on graph 3

Table 3, (-1, -3) is on graph 2

Table 4, (-2, -2) is on graph 4

Table 5, (4, 3) is on graph 1

__

Then our triples of graph, table, equation are ...

  (1, 5, 2), (2, 3, 1), (3, 2, 4), (4, 4, 5), (5, 1, 3)

Answer:

hi! this is for free points and so you can give the other person brainliest! Hope your day goes well :)

Step-by-step explanation:

[PICTURE ATTACHED] HHEEELLLPPP

Answers

Answer: it’s the first one

Step-by-step explanation:

it’s that because in order for you to buy a car you need a good credit without one how can you pay for your car monthly you might just lose your car.

Answer:

the top left one

Step-by-step explanation:

they actually look at your credit report if buy car to ensure that you pay properly  

The previous balance in your check register $234.67 . You make a deposit of 150.00 .You write a check for $63.23 . What is your new balance ???

Answers

Answer:

321.44

Step-by-step explanation:

$321.44 is the answer

Can someone please answer this



10 points

Answers

Answer:

C, 5

Hope this helps!

Step-by-step explanation:

Answer:

C.) 5

Step-by-step explanation:

Hope I helped

Simplify the expression: 1/5(10 + 20d)​

Answers

5+20d you just distribute
when you simply that it equals (2+ 4d)

stephany can type 2/3 of a page in 1/6 hour .at this rate how many pages will stephany type per hour?

Answers

2 and 4/6 pages in one hour

Help Please I will give brainliest
order them from greatest to least

Answers

Answer:

3rd one, 4th one, 1st one, 2nd one

Step-by-step explanation:

1st one - 2.6

2nd one - (-3.125 )

3rd one - 10.35

4th one - -2.95

Answer:

-4.5 x -2.3 < -3 3/10 - (- 7/30)  < 5/-1.6<  5 6/15 + (-2 4/5)

Hope this helped good luck

reduce 36/-24 to the standard form​

Answers

Answer: -3/2
Least form of =
Step-by-step explanation:
Reducing in standard form :

/* Finding HCF of 36 and 24 , we get
36 = 2×2×3×3
24 = 2×2×2×3
HCF (36,24) = 2×2×3 = 12
Now ,
Divide numerator and denominator by 12 , we get
-36/12/24/12

Therefore,
Least form of =-36/24= -3/2
-3/2..................

A group of words that does not express a complete thought, even though it may be punctuated as a sentence is a(n) _____.

A. elliptical comment
B. thoughtless statement
C. fragment

Answers

C.fragment.
.........................

need help ASAP!! (If you have the right answer and sends in less than and hour I will give brainliest) (15 points)

Answers

Answer:

The first and last statement is wrong, but the three in between is correct. I hope that helps :-)

Step-by-step explanation:

Find the Y-Intercept
-3x + 7Y = 21

Answers

The answer is 3
Trust me dog

Answer:

(0, 3)

Step-by-step explanation:

To find the y-intercept of a linear equation, we simply need to put the equation into "slope-intercept" form.  This will allow the y-intercept to be shown as the constant being added to the equation.  To put a linear equation into slope-intercept form, we simply need to solve for Y.  Let's do that.

-3x + 7Y = 21

3x + -3x + 7Y = 3x + 21

7Y = 3x = 21

(1 / 7) * 7Y = (3x + 21) * (1 / 7)

Y = (3x / 7) + (21 / 7)

Y = 3x/7 + 3

Now that we have the Y isolated, we can see the constant being added is 3.  Hence, the y-intercept is (0,3) since by definition the y-intercept is the point at which the line crosses the x axis (where x = 0).  If you plug x=0 into the equation, you get Y = 3.

Cheers.

Please help i have no idea how to do this.

Answers

You’re on your own with this one buddy
Well it’s growing at 2 cm per day so after it is at 9 cm the next day it will be at 11 cm
( please mark brainliest )

Mary borrowed $6000 from a bank for 3 years and was charged simple interest. The total interest that she paid on the loan was $720. As a percentage, what was the annual interest rate of her loan?

If necessary, refer to the list of financial formulas.

what is the percent %

Answers

4.17




Step by step : I don’t know if it’s right but I did $6000 x 3 cause he did it for 3 year and then it came up to $18,000 then I did what is the percentage of 750$ in $18,000 and got 4.17

You flip a coin three times. What is the probability that you get heads all three times? Answer as a simplified fraction use the forward slash "/".



2. You town got 3.44 inches of rain in June, 5.07 inches in July, and 4.28 inches in August. What was the average rainfall over these three month? Round to the nearest tenths of an inch.

Answers

Answer:

50% chance each time

each tim

Answer:

1. 1/6

2. 4.26 inches

Step-by-step explanation:

1. Because theres a chance youll land on heads 1/2 each time. Since its out of 3 you multiply 1/2*3 and get 1/6

2. Add all of the numbers, then divide by 3

HELLLLLLPPPPPPPPP WILLL GIVE BRAINLYEST

Answers

Answer:

Green

Step-by-step explanation:

Answer:

orange is correct because (0,5) is going over 0 up 5 that will have you one the y-axis.

Use the identity (x+y)(x2−xy+y2)=x3+y3 to find the sum of two numbers if the product of the numbers is 28, the sum of the squares is 65, and the sum of the cubes of the numbers is 407.

Answers

Answer:

Step-by-step explanation:

1) f(x) = x+y , xy = 49 --> f(x) = x+49/x

f '(x) = 1-49/x2 , x = ±√49 , choose x = +7

y = 49/x = 7

smaller = 7

larger = 7

2) Vertical Distance is difference between the two functions

V(x) = x+56 - x2, V '(x) = 1 -2x --> x = 1/2 --> V(1/2) = 56.25 <---Max Vertical distance

Boundary at -7 and 8 are less

3) I googled the equation, it is really y(n) = kn/(49+n2)

y '(n) = (k(49+n2) - 2kn2)/(49+n2) , Setting to zero, k(49+n2) -2kn2 = 0 , n = 7

4) Let x and y be the sides of the rectangle. A = xy = 37.5 Million or y = 37.5/x

The length of the fences is f(x) = 2x + 3y = 2x+112.5/x

f '(x) = 2-112.5/x2 --> x = √56.5 = 7.5 and y = 37.5/7.5 = 5 then scale by √Million

smaller = 5000 ft and larger = 7500 ft

this took me ages to work out so hopefully it helped

Answer:

x + y = 11

Step-by-step explanation:

xy = 28

x² + y² = 65

x³ + y³ = 407

(x + y)(x² - xy + y²) = x³ + y³

(x + y)(x² + y² - xy) = x³ + y³

(x + y)(65 - 28) = 407

37(x + y) = 407

x + y = 407÷37

x + y = 11

Answer ASAP for 20 points
Simplify the expression with NO exponents
q^18 x q^-20

Answers

Answer:

7x+8

Step-by-step explanation:

Answer:

q18xq−20

=

q18x

q20

=

x

q2

Step-by-step explanation:

Hope I helped

Brainliest plz

Helpppppppppppppppp 10x10

Answers

Answer:

100

Step-by-step explanation:

Answer:

100 is the answer lol

Step-by-step explanation:

10x10 equals 100

Make up a story! It might help to split up the graph/story into intervals like I just stated...

0-9 minutes

9-15 minutes

15-21 minutes

Answers

It took us about 0-9 minutes to get to school from the park.

We spent 9-15 minutes reading a book with the class.

It took me around 15-21 minutes to finish my lunch.

In an equation of the form k = ax^2 + bx + c with a > 0, the least possible value of k occurs at x = -b/(2a). In the equation k = (6x + 12)(x - 8), what is the least possible value for k?

Answers

Answer:

[tex]k= 6x^{2} -36x-96[/tex]

Is what I got in a calculator but however, if you'd try and solve for K you won't get a complete answer.

Hope this helped :)

PLEASE ANSWER ASAP ITS DUE!!
an atom has the radius 3×10^-11 meters. One of the particles that makes up an atom has a radius of 1× 10^-15 meters. About how much larger is the atom than this particle?

Answers

Answer:

umm i belive 4 meters might not be right tho

Step-by-step explanation:

Cell phone Plan A costs $70 per month and comes with a free $500 phone. Cell phone Plan B costs $50 per month but does not come with a phone. If you buy the $500 phone and choose Plan B, how many months is it until your cost is the same as Plan A's?

____________months

Answers

Answer:

25 months

Step-by-step explanation:

Answer:

11

Step-by-step explanation:

Some facts about powers of ten are shown.

Use what you know about powers of ten to enter numbers that make the equations true.

PLZ HELP

Answers

Blank 1: 10 000
Blank 2: 4
Blank 3: 1000
Blank 4: 0.013

Answer:

1) 10,000

2) 4

3) 1,000

4) 0.0013

5) Make what equation true? Once you tell me I can edit the answer and write the answer that is supposed to be here!

Hope this helps!

Please help me on this question hery hard 5x5=

Answers

Answer:

25

Step-by-step explanation:

Answer: 25

Step-by-step explanation:

5+5+5+5+5=25

If $(2x+5)(x-3)=14$, find the sum of the possible values of $x$.

Answers

Answer:

x = 1/4 ± 1/4√233

Step-by-step explanation:

(2x + 5)(x - 3) = 14

~Use FOIL on the left side

2x² - 6x + 5x - 15 = 14

~Combine like terms

2x² - x - 15 = 14

~Subtract 14 to both sides

2x² - x - 29 = 0

~Use the quadratic formula and simplify

x = 1/4 ± 1/4√233

Best of Luck!

Describe the transformation in this image

Answers

Answer:

Rotation

Step-by-step explanation:

2/3x - 12, x=18 (show work)

Answers

Answer:

0

Step-by-step explanation:

Since we know x=18, we need to find 2/3 of 18.

Let's make 2/3 so that the denominator(bottom part of a fraction) is 18.

18 divided by three is six so we needs to times the top number, 2, by 6.

The fraction would now be 12/18. Now we needs to subtracts 12 which would become 0/18. This equals 0.

Is she correct? Why or why not? Justify your reasoning.

Answers

Answer:

No she is wrong.

Step-by-step explanation:

4^4=4*4*4*4=256

Answer:

wrong

Step-by-step explanation:

the correct answer is 2^4=16

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