1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
inessss [21]
3 years ago
8

Suppose that y varies directly with x. Given x=2.5 when y=100. Find y when x = 3

Mathematics
1 answer:
sergeinik [125]3 years ago
3 0

Answer

y=120

Step-by-step explanation:

2.5 ->100

3 -> y

y=(3*100)/2.5

y=120

You might be interested in
PLEASE HELP ATTACHED BELOW
ddd [48]
I’m not sure but i think it is 126 pi IM SORRY IF IM WRONGGGGG
6 0
3 years ago
Please help
ASHA 777 [7]

Answer:

(-6,4)

Step-by-step explanation:

The equations are:

x^2+4y^2=100\\4y-x^2=-20

Solving for x^2 of the 2nd equation and putting that in place of x^2 in the 2nd equation we have:

4y-x^2=-20\\x^2=4y+20\\-------\\x^2+4y^2=100\\4y+20+4y^2=100

Now we can solve for y:

4y+20+4y^2=100\\4y^2+4y-80=0\\y^2+y-20=0\\(y+5)(y-4)=0\\y=4,-5

So plugging in y = 4 into an equation and solving for x, we have:

x^2=4y+20\\x=+-\sqrt{4y+20} \\x=+-\sqrt{4(4)+20} \\x=+-\sqrt{36} \\x=6,-6

So y = 4 corresponds to x = 6 & x = -6

The pairs would be

(6,4) & (-6,4)

<u><em>we see that (-6,4) falls in the 2nd quadrant, thus this is the solution we are looking for.</em></u>

5 0
3 years ago
A doctor’s office records the age at which 200 patients were treated for chicken pox. 60% of the patients were treated before ag
erik [133]
The answer is B. a=48, b=10, c=120, d=13
5 0
3 years ago
Read 2 more answers
[REALLY EASY QUESTION]
AVprozaik [17]

Answer:

A. h(x)=4x+2

Step-by-step explanation:

Because it's shifted to the left, you would subtract three units from 5, resulting in 4x+2. Hope this helps, have a nice day! :)

8 0
2 years ago
Ratchpad<br> Which line of reflection maps point Q at (1, 2) to point Q at (-2,-1)?
allochka39001 [22]
Idk...................................
7 0
3 years ago
Other questions:
  • Kendra is buying bottled water for a class trip she has 16 bottles left over from last trip she buys bottles by the case to get
    10·1 answer
  • AOSO<br>Evaluate.<br>1) 171-1-91​
    9·1 answer
  • How many tens are in four hundred thirty
    5·1 answer
  • Find the domain of the graphed function. (Please help me)
    5·1 answer
  • What are the missing angle measures in parallelogram RSTU
    11·2 answers
  • hi i need help. So more math i have to look at what breed weighs more and explain plz. maine coon kitten with a mean of 6.2. Or
    15·1 answer
  • What is the surface area of this cone?
    15·1 answer
  • Helppppppppppppp i suck at math
    14·1 answer
  • HELP please lol ill love u forever if u do this for me bestie
    7·1 answer
  • Graph the line that passes through the points (4,-6) and (-4,-8) and determine the equation of the line.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!