the relationship between x and y is proportional. when x is 5 and y is 20. what is x when y is 80?

Answers

Answer 1

Answer:

porpotional relationship is = 0.25

80y=20x

Step-by-step explanation:

20y=5x

80y=20x

Answer 2
80 ÷ 20 = 4
x × 4 = 20

Related Questions

8 + h = -2

Help plzzzzz

Answers

Answer:

h= -10

Step-by-step explanation:

Basically you’re finding out what h is equal to because h can’t be a real number i guess i would say. It is but it also isn’t if that makes sense. Basically just subtract 8 on both sides ands you get your answer. Hope this helped :)

Will has a spinner with six equal sections numbered one through six. If Will spins the spinner 150 times, how many times can he expect to spin a number less than 5?

A)30
B)110
C)100
D) 25


pls hurry!!!

Answers

Answer:30

Step-by-step explanation:

30 times he can expect to spin a number less than 5.

What is Probability?

Probability refers to potential. A random event's occurrence is the subject of this area of mathematics.

The range of the value is 0 to 1. Mathematics has incorporated probability to forecast the likelihood of various events.

The degree to which something is likely to happen is basically what probability means.

Given:

A spinner with six section numbered from 1 to 6.

total number of times spins = 150

So, the number of times the number comes less than 5 is

= 150 x 1/5

= 150/5

= 30

Learn more about Probability here:

https://brainly.com/question/30034780

#SPJ6

$9.27 for 48 oz of taco meat

Answers

Answer:

Need more info to answer your question!

Step-by-step explanation:

BRAINLIEST!!!! PLEASE HELP QUICK!!! find m BDC
(9x + 5)
(12x - 19)

Answers

Answer: x=8 angle BDC=77

Step-by-step explanation:

9x-12x=-19-5

-3x=-24

x=8

12x(8)-19

=77

(9x + 5) and (12x - 19) are one angle split equally.

(9x + 5) = (12x - 19)

The value of m∠BDC is 65°

What is a triangle?

It is a two-dimensional figure which has three sides and the sum of the three angles are equal to 180 degrees.

We have,

(9x + 5) and (12x - 19) are one angle split equally.

So,

9x + 5 = 12x - 19

We will solve for x.

9x + 5 = 12x - 19

Add 19 on both sides.

9x + 5 + 19 = 12x

Subtract 9x on both sides.

24 = 12x - 9x

24 = 3x

Divide both sides by 3.

24/3 = x

x = 7

Now,

The value of m∠BDC.

= 12x - 19

= 12 x 7 - 19

= 84 - 19

= 65°

Thus,

The value of m∠BDC is 65°

Learn more about triangles here:

https://brainly.com/question/25950519

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1/2(5x−8)=21 solve for x and brainliest

Answers

Answer:

x=10

Step-by-step explanation:

see picture for explanation

How would you express the area of the rectangle using the Distributive Property?

Answers

Answer:

C

Step-by-step explanation:

Step 1: Find your legth and width

Length = x + 5

Width = 3

Step 2: Use area formula to find area

l x w = A

(x + 5) x 3 = A

A = 3(x+5)

Step 3: Therefore Statement

Thereforethe answer to the question is C. 3(x+5)

Answer:

C. 3(x + 5)

Step-by-step explanation:

area of rectangle = length * width = width * length

A = area of largest rectangle

a1 = area of left rectangle

a2 = area of right triangle

The largest rectangle is made up of the the two smaller rectangles.

A = a1 + a2

Left rectangle: a1 = WL = 3x

Right rectangle: a2 = WL = 3 * 5

Total area of the two small rectangles:

A = a1 + a2 = 3x + 3 * 5

Apply the distributive property in reverse to 3x + 3 * 5 by factoring out a 3:

A = 3x + 3 * 5 = 3(x + 5)

The area of the largest rectangle is 3(x + 5)

We can also find an expression for the area of the largest rectangle directly by looking at its length and width.

The length of the largest rectangle is x + 5.

The width of the largest rectangle is 3.

A = WL

Substitute 3 for W, the width.

Substitute x + 5 for L, the length.

A = 3(x + 5)

Answer: C. 3(x + 5)

Factor the following using identities wherever necessary
1) x² + 8x
2) x2 - 4x
3) x² + x - 2
4) x2 - 9
5) x² + 22x + 121
6) x² - 8x + 16​

Answers

Answer:

1. x(x+8)

2. x(x−4)

3. (x−1)(x+2)

4.(x+3)(x−3)

5. (x+11)(x+11)

6. (x−4)(x−4)

Step-by-step explanation:

if 8 becomes 6, what is its percent of decrease?

Answers

Answer:

25

Step-by-step explanation: im pretty sure sorry if not but it does seem right..

Answer:

it would be a 25% decrease

A man wants to determine the height of a light house. He measured
the angle at A and found that tan A = 3/4. What is the height of the
light house if A is 40 m from the base ?

Answers

Answer:

Step-by-step explanation:

height/A = tanA

height/40 = 3/4

height = 30 meters

PLEASE HELP IVE BEEN STUCK ON THIS FOR SO LONG! ILL GIVE BRAINLIEST HELP ASAP PLEASE

Answers

Answer:

It would be A

Step-by-step explanation:

If you are minusing by 5 in the equation then that means that they graph has gone down by 5 units not up. and since 4x and is positive and -2x is negative the graph would flip over the years axis

The maximum distance (in nautical miles) that a radio transmitter signal can be sent is represented by the expression 1.23h√

, where h

is the height (in feet) above the transmitter.


Estimate the maximum distance x

(in nautical miles) between the plane that is receiving the signal and the transmitter. Round your answer to the nearest tenth.

Answers

Answer:

182.4

this website deleted my paragraph... TLDR; 182.4 is the answer

A drain empties a bathtub at a rate of 0.5 gallons per minute. A
30-gallon tub was full and the shower head was turned off,
how long would it take the tub to empty through the partly
unplugged drain?

Answers

I’m gonna say an hour

find the product of 4.05 and 100
a.40.5
b.0.405
c.4050
d.405​

Answers

Answer:

Hello! :) have a good day!

It would be D. 405

two step equations that equal 23, 26, 28, and 29

Answers

Answer:23 - 3 = 20 + 3 = 23

Step-by-step explanation:

Someone please help and make sure the answer right :)

Answers

Answer:

It's 10

Step-by-step explanation:

It's 10 because 7x is congruent to 70 and 7 times 10 equals 70 :))

Answer:

It's 10

Step-by-step explanation:

It's 10 buddy lol

properties of isosceles triangle:)

i’ll give a brainiest

Answers

Answer:

2 sides re equal

and 2 base angles are equal

Mark it as the brainliest answer

please thanks

Jenna uses 6.1 pints of white paint and blue paint to paint her bedroom walls. 4/5 of this amount is white paint, and the rest is blue paint. How many pints of blue paint did she use to paint her bedroom walls?

Answers

Answer:

2.44 pints of white

Step-by-step explanation:

If 8 men on a construction crew make up 40% percent of the entire crew, how many people are in the crew?

Could someone explain this question to me? I don't get it at all

Answers

Answer:

Step-by-step explanation:

Since 40% of the crew are men, which means n. 40=8 n=8/. 40 n=20 total number of crew 20 - 8=12 are women

x(0.4)=8
x=8/0.4
x=20
so there’s 20 people in the crew
hope this helps !

Suppose cos(x)=-1/3, where pi/2≤x≤ pi. What is the value of tan(2x)?

Answers

Answer:

4√2/7

Step-by-step explanation:

Suppose cos(x)=-1/3, where pi/2≤x≤ pi

tan(2x) = sin(2x)/cos(2x)

Since sin2x = 2sinx cosx

cos 2x = 2cos²x-1

Substitute

tan(2x) = 2sinx cosx/ 2cos²x-1

Given cosx = -1/3

adjacent = -1

hyp = 3

opp = √3²-(-1)²

opp = √9-1

opp = √8

sinx = opp/hyp

sinx = √8/3

tan(2x) = 2sinx cosx/ 2cos²x-1

tan(2x) = 2(√8/3)(-1/3)/ 2(-1/3)²-1

tan2x= (-2√8/9 )÷ (2/9 - 1)

tan2x = -4√2/9 * 9/-7

tan 2x = 4√2/7

Paula bought a ski jacket on sale for $4 less than half of the original price she paid $87 for the jacket what was the original price

Answers

Answer:

Original price was $91

Answer:

$182

Step-by-step explanation:

I hope this helps <3

The island has 600 bikes and 900 people. What is the bike to person ratio

Answers

Answer:

2:3 (2 bikes for every 3 people)

Step-by-step explanation:

hope this helps

please solve!! i need an 100 on this!

Answers

Answer:

cos 30=b/h=√3/2.......(1)

sin30=p/b=1/2.......(2)

we need b=?

h=2b/√3. h=2√2

now.....2b/√3=2√2

b=mBC=√6

MATH HELP! BRAINLIESTT!!

Answers

Answer:

14

Hope it helps

.......⋋✿ ⁰ o ⁰ ✿⋌

Answer:

n = 14

Step-by-step explanation:

ΔABC was dilated by a scale factor of 2.


[tex] \sqrt{8} [/tex]

Answers

[tex] \sqrt{8} =2 \sqrt{2} [/tex]

Explanation :

[tex] \sqrt{8} [/tex]

[tex] = \sqrt{(4 \times 2)} [/tex]

[tex] = \sqrt{4} \times \sqrt{2} [/tex]

[tex] = 2 \sqrt{2} [/tex]

A cell phone provider offers a plan that costs $20 per month plus $0.20 per text message sent or received. A comparable plan costs
$30 per month but offers unlimited text messaging. Complete parts a. and b. below.
a. How many text messages would have to be sent or received in order for the plans to cost the same each month?
In order for the plans to cost the same.
text messages would have to be sent or received
b. If you send or receive an average of 200 text messages each month which plan would you choose and why?​

Answers

Answer:

Step-by-step explanation:

a)

30=20+0.2m

10=0.2m

50=m

So after sending 20 messages the plans would cost the same.

b)

Obviously from the first part that the unlimited plan is cheaper when sending 200 messages, but the costs numerically would be.

Unlimited plan costs $30 while the other plan costs

20+0.2(200)=$60

They would have sent 5

Select the three equations that have
Y= 8.1 as the solution.

Y + 2.9 = 11
12 - y = 8.1
2y + 1 = 17.2
9 + 7.2 - y = 8.2
28.4 - y = 20.3

Answers

Answer:y+2.9=11, 2y+1=17.2, 28.4-y=20.3

Step-by-step explanation:

Answer:

Select all of the equations that have y=8.1 as the solution. Mark all that apply.  

y+2.9=11

12-y=8.1

2y+1=17.2

9+7.2-y=8.2

28.4-y=20.3

Step-by-step explanation:

Select all of the equations that have y=8.1 as the solution. Mark all that apply.  

y+2.9=11

12-y=8.1

2y+1=17.2

9+7.2-y=8.2

28.4-y=20.3

The set of numbers 1, 7, 11 and 36 contains values for n. What value of n makes the equation below true? 4n + 8 = 36

A) 1
B) 7
C) 11
D) 36

Answers

The answer is B
4(7)+8=36
28+8=36
36=36

Help with limits will give brainliest

Answers

Answer:

it because it prove the first condition so options c correct

which system of equations graphed below has a solution of (2,1)​

Answers

Answer:

Sorry to say this... but neither of them have a solution of (2,1)

Step-by-step explanation:

The top one has a solution of (-2,-1). The one on the bottom has a solution of (-2,1). So... I'm not sure how this can help... but yeah...

How many TERMS are there in 8.4n - 3.2p?

Answers

the are two terms in the expression
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