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
ICE Princess25 [194]
3 years ago
13

Patti's Pet Palace has a 90-gallon fish tank. When it needs to be cleaned, it can be drained at a rate of 2 gallons per minute.

Assuming the tank was full, and x represents the number of minutes the tank has been draining, which of the following equations represents the amount of water in the tank after x minutes?
y = 2x + 90





y = 90x - 2





y = 90 - 2x





y = 2x - 90
Mathematics
2 answers:
shtirl [24]3 years ago
8 0
Your answer is <span>y = 90 - 2x
</span>
Hope this helps.

dangina [55]3 years ago
6 0
Y = 90 - 2x

This should be the correct answer
You might be interested in
You're given a fraction in simplest form the numerator is not a zero when you write the fraction as a decimal it is a repeating
oksano4ka [1.4K]
The denominator can be 3 if the numerator is 1
3 0
3 years ago
Use appropriate algebra and theorem 7.2.1 to find the given inverse laplace transform. (write your answer as a function of t.) ℒ
castortr0y [4]

We assume you want to find the inverse transform of s/(s^2 +3s -4). This can be written in partial fraction form as

(4/5)/(s+4) + (1/5)/(s-1)

which can be found in a table of transforms to be the transform of

(4/5)e^(-4t) + (1/5)e^t


_____

There are a number of ways to determine the partial fractions. They all start with factoring the denominator.

s^2 +3x -4 = (s+4)(s-1)


After that, you can postulate the final form and determine the values of the coefficients that make it so. For example:

A/(s+4) + B/(s-1) = ((A+B)s + (4B-A))/(s^2 +3x -4)


This gives rise to two equations:

(A+B) = 1

(4B-A) = 0

4 0
3 years ago
Given that curl F = 2yi – 2zj + 3k, find the surface integral of the normal component of curl F (not F) over (a) the open hemisp
Dimas [21]

Use Stokes' theorem for both parts, which equates the surface integral of the curl to the line integral along the surface's boundary.

a. The boundary of the hemisphere is the circle x^2+y^2=9 in the plane z=0, where the curl is \mathrm{curl}\vec F=2y\,\vec\imath+3\,\vec k. Green's theorem applies here, so that

\displaystyle\iint_S\mathrm{curl}\vec F\cdot\mathrm d\vec S=\int_{\partial S}\vec F\cdot\mathrm d\vec r=3\int_{x^2+y^2=9}\mathrm d\vec r

which means the value of the line integral is 3 times the area of the circle, or 27\pi.

b. The closed sphere has no boundary, so by Stokes' theorem the integral is 0.

7 0
3 years ago
Suppose a jar contains 13 red marbles and 11 blue marbles. If you reach in the jar and pull out 2 marbles at random at the same
Alisiya [41]
I’d say around 75% or less

This is just an assumption considering that there are more red than blue but only trumps blue by 2. Taking out those two, you’d be left with a 50% chance of getting red and/or blue marbles
3 0
3 years ago
3 and 4 pls help me with these math problems......
Triss [41]
3) Equation is y=10x
x. y
1. 10
2. 20
3. 30
4. 40
I'm sorry I don't get number 4
3 0
3 years ago
Other questions:
  • A. 24 degrease <br> B. 35<br> C.65<br> D.90
    9·1 answer
  • I need help with figuring out linear functions
    10·1 answer
  • Midpoint of the segment with endpoints A(-5, -2) and B(-7, 6).
    7·2 answers
  • (4,-10); m=-3 I need help in this problem
    5·1 answer
  • 809÷62 check for reasonableness
    15·1 answer
  • There are a total of coins when dimes and nickels are combined. The total amount is 80 cents. How many dimes and nickels are the
    8·1 answer
  • Which is a unit rate?
    14·2 answers
  • Please answer with explanation, I don't understand.<br><br> <img src="https://tex.z-dn.net/?f=%5Csqrt%7Bx%5E2-14x%2B49%7D%20%3Dx
    15·1 answer
  • Solve the system by substitution <br> y = 6x -24<br> y = -2x
    7·2 answers
  • No links plz. Need help asap.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!