answer.
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
wolverine [178]
2 years ago
11

A furnace used 40% of the fuel in its tank in the month of March and then used 25% of the remaining fuel in the month of April.

At the beginning of March, there were 240 gallons of fuel in the tank. How much fuel (in gallons) was left at the end of April?
Mathematics
1 answer:
gtnhenbr [62]2 years ago
6 0
March: 240 * 0.4 = 96 used
240 - 96 = 144 remains in the tank

April : 144 * 0.25 = 36 used
144 - 36 = 108 remains in tank

answer: 108 gallons left at the end of April
You might be interested in
Jamaal earns $8.42 per hour. If he gets a 3% raise, how much will he earn per hour?
nika2105 [10]
C will be the answer,
4 0
2 years ago
Read 2 more answers
The number of cases of a new disease can be modeled by the quadratic regression equation y = –2x2 + 36x + 6, where x represents
nirvana33 [79]

Since x represents the year, year 15 will be 15 years.

Plug in "15" as your "x"

y = -2(15)^2 + 36(15) + 6

15^2 = 225 (Exponents come before multiplication)

y = -2(225) + 36(15) + 6

y = -450 + 540 + 6

y = 90 + 6

y = 96

<em>The answer is B</em>

3 0
2 years ago
A freshwater stream flows into the ocean, as shown in the diagram. Which statement correctly describes how the stream affects th
gizmo_the_mogwai [7]
I can't see any diagram but the correct statement should be:
"Salinity decreases because the stream adds freshwater to the ocean"

The other statements are false.
F Salinity increases because the stream adds salt to the ocean
T Salinity decreases because the stream adds freshwater to the ocean
F Salinity increases because the stream adds freshwater to the ocean
F Salinity remains the same because the steam adds freshwater to the ocean

8 0
1 year ago
HELP PLS&gt;&gt;&gt; The vector (3, - 7) ) is rotated by an angle of (3pi)/4 radians and then reflected across the y-axis. If th
horsena [70]

Answer:

a \approx -2.826, b \approx 7.072

Step-by-step explanation:

First, the vector must be transformed into its polar form:

r = \sqrt{3^{2}+ (-7)^{2}}

r \approx 7.616

\theta \approx 2\pi - \tan^{-1}\left(\frac{7}{3} \right)

\theta \approx 1.629\pi

Let assume that vector is rotated counterclockwise. The new angle is:

\theta' = \theta + \frac{3\pi}{4}

\theta' = 2.379\pi

Which is coterminal with \theta'' = 0.379\pi. The reflection across y-axis is:

\theta''' = \pi - \theta''

\theta''' = 0.621\pi

The equivalent vector in rectangular coordinates is:

a = 7.616\cdot \cos 0.621\pi

a \approx -2.826

b = 7.616\cdot \sin 0.621\pi

b \approx 7.072

7 0
1 year ago
A SCHOOL HAS 320 GIRLS AND 250 BOYS
tigry1 [53]

Answer:

89

Step-by-step explanation:

I just multiplied 320 by 0.2 and then 250 by 0.1 and then added them  together. I hope it helps and I'm not sure what method you would use for this but that's mine.

8 0
1 year ago
Other questions:
  • Calculate the loss on selling 50 shares of stock originally bought at 13 and 3/4 and sold at 12
    8·1 answer
  • Tommy is ordering concrete for a construction project. The price of concrete is $.02 per pound. Concrete is also taxed at a rate
    10·1 answer
  • Cos12sin78+cos78sin12
    14·1 answer
  • The solution to a quadric equation are x=2 and x=7. If k is a nonzero constant which of the following must be equal to the quadr
    5·1 answer
  • Find a matrix P such that PTAP orthogonally diagonalizes A. Verify that PTAP gives the proper diagonal form. (Enter each matrix
    14·1 answer
  • A government bureau keeps track of the number of adoptions in each region. The accompanying histograms show the distribution of
    7·1 answer
  • Which graph shows the solution to the inequality Negative 3 x minus 7 less-than 20
    9·2 answers
  • The shuttle bus from your parking lot and your office building operates on a 15 minute schedule. You arrive at the parking lot a
    13·1 answer
  • The price of a train ticket consists of an initial fee plus a constant fee per stop.
    14·2 answers
  • Theresa has hired Chuck and Diana to paint a fence. Diana can paint 150 fence posts in the same time it takes Chuck to paint 130
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!