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
denis-greek [22]
3 years ago
10

suppose x and y vary inversely and y=10 when x=4. write a function that models the variation then find y when x =90

Mathematics
1 answer:
ankoles [38]3 years ago
4 0
X = k/y
4 = k/10
k = 4 x 10 = 40
Thus, x = 40 / y

90 = 40 / y
y = 40/90 = 4/9
You might be interested in
Consider the system of equations given in slope-intercept form. y = −13x + 17, y = 5x - 23 The solution seems to be about (8, 14
bogdanovich [222]

Answer:

The exact solution for this equation would be (2.222, -11.889)

Step-by-step explanation:

Since it told us to use a graphing calculator, I went on to desmos graphing calculator, typed in the equation, then I found out where the two line intersect, and then that was the answer.

4 0
3 years ago
Read 2 more answers
On Tuesday the value of a stock decreased by 1/2 point. On Wednesday, the value increased by 3/4 point. On Thursday the value de
Tpy6a [65]
The change is -(1/2 + 3/4 + 3/8).
If you add the fractions, you get -(13/8).
3 0
3 years ago
A recently admitted class of graduate students at a large state university has a mean GRE verbal score of 650 with a standard de
hjlf

Answer:

The answer is below

Step-by-step explanation:

The z score is a score used to determine the number of standard deviations by which the raw score is above or below the mean, it is given by the equation:

z=\frac{x-\mu}{\sigma} \\\\\mu=mean, \sigma=standard\ deviation,x=raw\ score\\\\for\ a\ sample\ n:\\\\z=\frac{x-\mu}{\sigma/\sqrt{n} }

Given that μ = 650, σ = 50. To find the probability that 5 students who have a mean of 490, we use:

z=\frac{x-\mu}{\sigma/\sqrt{n} } =\frac{490-650}{50/\sqrt{5} } =-7.16

From the normal distribution table, P(x < 490) = P(Z < -7.16) = 0.0001 = 0.01%

Since only a small percentage of people score about 490, hence the local newspaper editor should write a scathing editorial about favoritism

4 0
3 years ago
The chairlift at a ski resort has a vertical rise of 3200 feet. if the length of the ride is 1.2 miles, what is the average angl
Aleksandr-060686 [28]
(see attached graphic)
1.2 miles = 6,336 feet

IF the length is measured along the ground then:
tan (angle) = opp / adjacent
tan (angle) = 3,200 / 6,336
<span>tan (angle) = 0.505050505</span>
angle = 26.796 Degrees

IF the length is measured from the ground to the top then:
sin (angle) = opp / hypotenuse
<span>sin (angle) = 0.505050505</span>
angle = 30.335 Degrees





6 0
3 years ago
Joel made some muffins. He gave 1/4 of of the muffins to a neighbor. He took 3/8 of the muffins to school. What fraction of the
dolphi86 [110]
Okay!   So 1/4 = 2/8  and 3/8 = 3/8      3/8+2/8= 5/8
3/8 is your answer


6 0
3 years ago
Other questions:
  • mike&amp; sue danced 3/4 of an hour with out stopping. this is 3/8 hour more than betty&amp; ryan danced. how long more did bett
    10·1 answer
  • What is the opportunity cost of the first 25 tacos? Of the last 25 tacos (from 75 to 100)?
    9·1 answer
  • Express $112 for 14 hours as a unit rate.
    8·1 answer
  • I just need help on the last question
    13·1 answer
  • Convert the following equation to Slope-Intercept Form
    14·1 answer
  • If 21% of males and 15% of females in a given state play the guitar what is the probability that a randomly selected subject in
    8·2 answers
  • The denominator of a rational number is greater than the numerator by 10. If the numerator is increased by 1 and the denominator
    8·1 answer
  • Pleasee helpp!!! NO LINKS OR FILES OR I WILL REPORT
    13·1 answer
  • 4/8 divided by 4/6<br><br><br> thank you for your answer
    8·2 answers
  • What is the y-intercept of the graph? A) (-2, 0) B) (2, 0) C) (0, -4) D) (0, 4)
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!