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
Hunter-Best [27]
3 years ago
9

At the beginning of an experiment, there are 400 grams of contaminants. Each hour, three-fourths of the contaminants are filtere

d out.
Mathematics
1 answer:
snow_tiger [21]3 years ago
4 0

Answer:

thats 300 grams filtered out per hour

Step-by-step explanation:

so 4/4ths of 400 is 400 but taking 3/4ths is turning it too 100 grams

You might be interested in
-8x^2-3x+5+2x^2+7x-5
denis-greek [22]
-6x^2+4x

my reasoning:
eliminate the opposites (5 & -5)
collect the like terms (-8x^2 & + 2x^2)
collect the like terms again (-3x &+7x)
8 0
3 years ago
Simplify – 2(7x – 3)
ANTONII [103]

All you need to do here is multiply the outside number by both 7x and -3.

When done correctly it should look like this:

-14x+6

Thats the answer.

7 times 2 gives you 14 but when multiplying mixed signs it turns negative so it would be -14.

negative 3 times negative 2 gives you 6. Both signs are negative, and you would suppose it would turn into a negative but thats only true when both signs are mixed. Both the 3 and the 2 are negative, making the signs the samez giving you positive

<em><u>Dont</u></em><em><u> </u></em><em><u>forget</u></em><em><u> </u></em><em><u>to</u></em><em><u> </u></em><em><u>make</u></em><em><u> </u></em><em><u>this</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>brainliest</u></em><em><u> </u></em><em><u>answer</u></em><em><u> </u></em><em><u>to</u></em><em><u> </u></em><em><u>help</u></em><em><u> </u></em><em><u>those</u></em><em><u> </u></em><em><u>in</u></em><em><u> </u></em><em><u>need</u></em><em><u>.</u></em><em><u> </u></em><em><u>also</u></em><em><u> </u></em><em><u>add</u></em><em><u> </u></em><em><u>a</u></em><em><u> </u></em><em><u>5</u></em><em><u> </u></em><em><u>star</u></em><em><u> </u></em><em><u>and</u></em><em><u> </u></em><em><u>a</u></em><em><u> </u></em><em><u>heart</u></em><em><u>.</u></em><em><u> </u></em><em><u>thanks</u></em><em><u> </u></em><em><u>for</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>support</u></em><em><u> </u></em><em><u>hope</u></em><em><u> </u></em><em><u>it</u></em><em><u> </u></em><em><u>helped</u></em><em><u>.</u></em><em><u> </u></em><em><u>have</u></em><em><u> </u></em><em><u>a</u></em><em><u> </u></em><em><u>nice</u></em><em><u> </u></em><em><u>day</u></em>

5 0
3 years ago
Which graph shows y=2⌈x⌉−3?
umka2103 [35]

Answer: C

Step-by-step explanation:

5 0
2 years ago
Write an equation of a circle with a center at (2, - 4) and a radius of 4.
fgiga [73]

9514 1404 393

Answer:

  (x -2)^2 +(y +4)^2 = 16

Step-by-step explanation:

The equation of a circle with center (h, k) and radius r is ...

  (x -h)^2 +(y -k)^2 = r^2

You have (h, k) = (2, -4) and r = 4, so your equation is ...

  (x -2)^2 +(y -(-4))^2 = 4^2

  (x -2)^2 +(y +4)^2 = 16

6 0
2 years ago
4.8 + 2.2w − 1.4w + 2.4
Lostsunrise [7]

Answer:

7.2 + 0.8w

Step-by-step explanation:

combine like terms. Like terms have same variable with same power.

2.2w and (-1.4w) are like terms & 4.8 and 2.4 are like terms.

4.8 + 2.2w - 1.4w + 2.4 = 4.8 + 2.4 + 2.2w - 1.4w

                                      = 7.2 + 0.8w

5 0
2 years ago
Read 2 more answers
Other questions:
  • Which statement best explains whether y = 2x − 3 is a linear function or a nonlinear function?
    7·1 answer
  • Is this perpendicular or parallel or neither y = -4/5x+3 And 4x -5y=-15
    15·1 answer
  • The price of a digital camera sold in stores is $129. It is sold on eBay for $65. What is the percent decrease from the store's
    6·1 answer
  • Help me please sssssssssssssssssssssssssssss
    6·2 answers
  • The answer for number 6. How many minutes did sherita use during the months
    10·1 answer
  • Two trains are moving towards each other. One train moves at a speed of 50 mph, and the other train travels at 60 mph. How soon
    13·2 answers
  • What is the equation of the line that passes through the point (-6,-8) and has a slope of 1/3
    10·1 answer
  • marta tiene 15 años, que es la tercera parte de la edad de su madre ¿que edad tiene la madre de marta?
    13·1 answer
  • Which of the following statements about AB and AC is true?
    12·1 answer
  • In an examination, 40% of students passed in Maths only, 30% passed in Science only and 10% students failed in both subjects. If
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!