Mathematics Middle School

The variables y and x have a proportional relationship, and y = 5 when x = 4.
What is the value of x when y = 8?

Enter your answer in the box.

x = ___

Answers

Answer 1
If y and x have a proportional relationship, we can write this relationship as:

y = kx

where k is the constant of proportionality. To find the value of k, we can use the given information that y = 5 when x = 4:

5 = k(4)

Solving for k, we get:

k = 5/4

Now that we know the value of k, we can use it to find the value of x when y = 8:

8 = (5/4)x

Solving for x, we get:

x = (8*4)/5

x = 6.4

Therefore, the value of x when y = 8 is 6.4.

Related Questions

(show work pls and ty)

Answers

1. Find the constant of proportionality (K).

K=2.5 because 5 divided by 2 is 2.5. You can even check this by dividing 12.5 by 5 and still get 2.5

2. Write the proportional equation using the table below.

(1 bottle =2.5 liters)
6 bottles X 2.5 liters

3. How many liters of soda can 6 bottles hold?

6 bottles = 15 liters

Answer: 15

Please help me and answer this.

Answers

Connect the points and find the distances. Then match them up with one of the answers till you get the right one.

HELPPPPPP you well get a cookie and cake if you help me ^^

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Top person is wrong A is correct because when you simplify it will end up being 24 which is greater than 13. C is also wrong because it is the same as 13 and NOT greater. D is wrong because it is equal to 9. Therefore, A is your only correct answer

Question 1: What angle is R?
Question 2: What angle is G?

Answers

Answer:

the square(r)=90 degrees and a triangle = 180 degrees so angle g=55

Step-by-step explanation:

r = 90°
because it is the right angle

g = 55 °

35° + 90° + 55° = 180°

PLEASE HELP THIS IS URGENT

What is the surface area of the figure below?

A. 12ft
B. 36ft
C. 54ft
D. 90ft

Answers

A 12 bc both front and back are six so 6+6 = 12
the answer is a. i think

Help please will mark brainliest

Answers

2.5 x 10 -13 , the last one

The last one!! Scientific Notation is my favorite!

find area of the shaded region use 3.14 for pi

Answers

Answer: The area of the shaded region is 50.24 square centimeter

Step-by-step explanation:

The given parameters are: -- the diameter of the big circle -- the diameter of the small circleStart by calculating the area of the big circle, using:So, we have:Next, calculate the area of the small circle, using:So, we have:The difference between the areas is the area of the shaded region.So, we have:Substitute known values Hence, the area of the shaded region is 50.24 square centimeter

Selections
-One Solution
-No Solution
-Infinite Solution

Answers

A is infinite, B should be none and C is one.
A is infinite, B should be none and C is
one.

HELP ILL GIVE BRAINLY!!

What is the sum of -2x³ + x-3 and x³- 3x - 4?
(a) Show your work.
(b) Is the sum of -2x³ + x-3 and x³-3x - 4 equal to the sum of x³ - 3x - 4 and
-2x³ + x-3? Explain your answer.

Answers

start by adding the all the similar number with teh exponents but do the negatives last then you need to combine like terms and yu should get 56 as your asnwer

yes, the two equations are equivalent because only the commutative property was applied.

please help me fast to please and if you get it right I will mark you as brainlyst and plut 15 poing please I beg you fast

Answers

Answer:1.5

Step-by-step explanation:

PLEASE HELP THIS IS URGENT

What is the volume of the composite figure.


A. 104ft

B. 120ft

C. 150ft

D. 160ft

Answers

Answer:

D

Step-by-step explanation:

Answer:

I'm getting 140, though

Step-by-step explanation:

120 i think

Can anyone solve this?

Answers

Me eleven
Pretty YEAH RESLLY PRETTY
it’s eleven! how do i know this?

A circular sinkhole has a circumference of 75.36 meters. A week later, it has a circumference of 150.42 meters.
a. Estimate the diameter of the sinkhole each week.

At first, the sinkhole has an approximate diameter of
meters. A week later, the diameter is about ____
meters.



b. How many times greater is the diameter of the sinkhole a week later?

The diameter of the sinkhole now is about ___
times greater compared to a week later.

Answers

Answer:

diamater is two times the radius

Step-by-step explanation:

35 is 64% of what number? Round your answer to the nearest hundredth if necessary.

Answers

Answer:

11 4/7

Step-by-step explanation:

The answer is : 54.69

Help asap I will mark you as a brainliest

Answers

Answer:

with what exactly

Step-by-step explanation:

where’s the question?

Help I will mark you as a brainliest

Answers

Answer: $7.24

Step-by-step explanation:

Answer:

: 1 gallon of milk equals $3.49

Step-by-step explanation:

what is this (6x+4)+26=90 ?

Answers

Answer:

x=10

Step-by-step explanation:

(6x+4)+26=90

6x+4+26=90

6x+30-30=90-30

6x÷6=60÷6

x=10

Answer:

the answer is X=10

(6x+4)+26=90

6x +30=90

6x= 90÷30

6x=60

X = 60÷6

X= 10

i need help please help

Answers

Answer: it's a trapezoid

It will be a trapezoid and the picture is the points connected.
Hope this helps!!!

Suppose you bought a house for $467,520 and the value has increased by 19%. What is the new value of the house in dollars? Round your answer to the nearest hundredth.
please explain

Answers

Answer:

19÷100×467520=88828.8

88828.8+467520=556348.8

Nearest hundred=$556300

Help, does anyone know the answer to this one?

Answers

Answer:

.

Step-by-step explanation:

which angles are supplementary to each other? select all that apply

Answers

A supplementary angle is angles that when added together equals 180 degrees

The answers would be:
Angle 4 and 4

They are the only two angles that add up to 180 degree
Angle 4and5 are supplementary to each other

Find the volume of the pyramid. Round to the nearest tenth if necessary.

Answers

Answer:

410.6 cubic cm

Step-by-step explanation:

Formula V = (l x w x h) / 3

        V =       ( 8 x 14 x 11) / 3

        V =   1232 / 3

        V = 410.6 cubic cm

How do you simplify rational expressions

Answers

Answer:

Ok so,

Step-by-step explanation:

Step 1: Factor the numerator and the denominator.

Step 2: List restricted values.

Step 3: Cancel common factors.

Step 4: Reduce to lowest terms and note any restricted values not implied by the expression.

Identify the least value, first quartile, median, third quartile, and greatest value of the data.
5, 1, 4, 0, 9, 0, −8, 5, 2, 4, −1, 10, 7, −5

Answers

The median based on the number lines given will be 3.
How to calculate the median?
It should be noted that the median simply means the number in the middle when the numbers are arranged in ascending or descending order.
The median will be:
-8, -5 -1, 0, 0, 1, 2, 4, 4, 5, 5, 7, 9, 10. Here, the median will be:
= (2 + 4)/2
= 3

1. What is the median number of TVs in Mrs. Jamison's class?
2. What is the median number of TVs in Mr. Zimmerman's class?

Answers

1. median of 2
2. median of 3

Can someone help me please

Answers

Answer: Have you tried 3? I would not know, i am in seventh grade doing 8th grade math

Maybe try 2 or 1.5 or maybe it’s 1 but I 100% know it’s one of these

Please help (mathematician)

Answers

This depends on your definition of close.

Rational numbers are numbers that can be written as p/q where p and q are integers and q is not 0. Examples include 22/7 or 1 or 0.5.

Irrational numbers are not rational. Example include pi or square root of 2.

Two rational numbers close to -8 could be -9 and -25/3. Two irrational numbers could be -e and [tex]-5\sqrt{2}[/tex].

Then the order goes -9,-25/3 (since it is -8.333...),[tex]-5\sqrt{2}[/tex] (root 2 is around 1.4 so it is near -7),-e(around -2.7)

Which number line shows the graph of x>11

Answers

Answer: the second one.

Step-by-step explanation:

it means any number greater than or equal to 11. so it would be a closed circle going towards any number greater than 11 :)

Answer: 2

Step-by-step explanation:

Identify the least value, first quartile, median, third quartile, and greatest value of the data.
5, 1, 4, 0, 9, 0, −8, 5, 2, 4, −1, 10, 7, −5

Answers

Answer:

least value=-8, Q1=-0.5, median=3, Q3=5, greatest value=10

Step-by-step explanation:

To find the least and greatest values, we simply look at the numbers in the data set and see that the least is -8 and the greatest is 10.

To find the first quartile, median, and third quartile, we need to put the data in order from least to greatest:

-8, -5, -1, 0, 0, 1, 2, 4, 4, 5, 5, 7, 9, 10

There are 14 numbers in the data set, so the median is the average of the 7th and 8th numbers, which is:

(median) = (2+4)/2 = 3

To find the first quartile, we need to find the median of the lower half of the data set. The lower half includes the first 7 numbers:

-8, -5, -1, 0, 0, 1, 2

The median of this lower half is the average of the 3rd and 4th numbers:

(first quartile) = (-1+0)/2 = -0.5

To find the third quartile, we need to find the median of the upper half of the data set. The upper half includes the last 7 numbers:

2, 4, 4, 5, 5, 7, 9, 10

The median of this upper half is the average of the 4th and 5th numbers:

(third quartile) = (5+5)/2 = 5

So the least value is -8, the first quartile is -0.5, the median is 3, the third quartile is 5, and the greatest value is 10.

What do we divide the numerator and denominator by to simplify
12/30 to lowest terms? (What is the largest number we can divide both the numerator and denominator by?)

Answers

Answer:

The factors of 12 are 1, 2, 3, 4, 6, and 12.

The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30.

The largest number that both 12 and 30 have in common is 6.

So, we can divide both the numerator and denominator by 6:

12/30 ÷ 6/6 = 2/5

Therefore, 12/30 simplified to lowest terms is 2/5.

Answer:

Divide the numerator and denominator by 6:

[tex] \frac{12}{30} = \frac{2}{5} [/tex]

Step-by-step explanation:

12 = 2 × 2 × 3

30 = 2 × 3 × 5

GCD of 12 and 30 = 2 × 3 = 6

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