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
Fittoniya [83]
3 years ago
7

helphelphelp i want this done by thursday,im in battle of the books and my competition is in 2 weeks (if ur in it too see u ther

e (:) I wanna get this finished so i have more time to read the 22 books over again.

Mathematics
1 answer:
JulsSmile [24]3 years ago
6 0

Answer:

  • 75%
  • 36 days
  • 12 boards

Step-by-step explanation:

a) You're interested in the percentage represented by the ratio ...

  $3750/$5000

To convert any ratio or fraction to a percentage, multiply it by 100%:

  $3750/$5000 × 100% = 75%

__

b) This and the next are essentially division problems. To find the number of times a larger quantity can be made into smaller quantities, divide the larger quantity by the smaller. You can see this if you write and solve an equation:

  24 cups = n × (2/3 cup)

  24/(2/3) = n . . . . . . . . . . . . . divide by the coefficient of n; units of cups cancel

  24×(3/2) = n = 36

Jane will take 36 days to finish the cereal.

__

c) Same approach as the previous problem:

  21 in = n × (1 3/4 in)

  21/(7/4) = n . . . . . . . . divide by the coefficient of n; units of inches cancel

  21×(4/7) = n = 12

There are 12 boards in the stack.

_____

<em>Comment on units</em>

If you keep the units with the numbers, the units of the answer will come out right if you did the arithmetic properly. If the answer units don't make sense, you have probably formulated the problem incorrectly.

For the last two problems, we have cancelled the units, so have an answer that is a "pure number"--one with no units. Such an approach is suitable when the answer is a count of something. We could have used some additional units, such as ...

  (24 cups/box)/(2/3 cup/day) = 36 day/box

  (21 in/stack)/(7/4 in/board) = 12 board/stack

The "/" is read as "per": 36 days per box, or 12 boards per stack. If you use these "extended" units, there is almost no way to do the math wrong and have the units of the answer make sense. (Consideration of the units can help you figure out what math you need to do to end up with the proper units.)

Math with units is similar to math with any variable(s). They can be multiplied, divided, added, subtracted, raised to a power--just like variables are. As with variables, you can only add or subtract "like" units.

Using units is <em>helpful</em> with many math "word problems." It is <em>essential</em> for most physics and healthcare (dosage) problems.

You might be interested in
On a recent day, one U.S dollar was worth 0.81 euros. If you were to exchange 222 euros, how many U.S dollars would you receive?
Juli2301 [7.4K]

<em>Answer:</em>

<em>254.22</em>

<em>Step-by-step explanation:</em>

<em>222 euros equal 254.22</em>

7 0
3 years ago
A 748-N man stands in the middle of a frozen pond of radius 4.0 m. He is unable to get to the other side because of a lack of fr
Ber [7]

Answer:

The man will take 64 seconds to reach to the south shore of the frozen pond.

Step-by-step explanation:

Given:

Weight of the man = 748 N      Mass of the man,(m)= \frac{W}{g} = \frac{748}{9.8} = 76.32 kg

Radius of the pond (r) = 4 m

Mass of the textbook = 1.2 kg

Velocity at which the textbook is thrown = 4 ms^1

We have to find the velocity of the man after the throw.

Let the velocity is V_m .

Now using law of conservation of momentum we can find the V_m value.

m_(_b_)V_b_(_i_) +m_(_m_)V_m_(_i_) =m_(_b_)V_b_(_f_)+m_(_m_) V_m_(_f_)

Considering V_m_(_f_)=V_m

And initial velocity of both the man and book i.e V_b_(_i_)=0,\ V_m_(i_)=0

So,

⇒ 0 =m_(_b_)V_b_(_f_)+m_(_m_) V_m

⇒ Plugging the values.

⇒ V_m=-\frac{m_(_b_)V_b_(_f_)}{m_(_m_)}

⇒ V_m=-\frac{1.2\times 4}{76.32}

⇒ V_m=-0.062 ms^-1

Here the negative velocity is meant for opposite direction of the throw.

Numerically we will write, V_m = 0.062

With this velocity the man will move towards south.

We have to calculate the time taken by the man to move to its south shore.

And we know velocity(v)\times time(t) = distance(d)

Let the time taken be t and v\times t = d and d=r then, V_m\times t=r

Then

⇒ t=\frac{radius\ (r)}{V_m}

⇒ Plugging the values.

⇒ t=\frac{4}{0.062}

⇒ t =64 sec

The man will take 64 seconds to reach to the south shore of the frozen pond (circular).

5 0
3 years ago
How do u do this please help!!
aev [14]

Answer:

<h2>C. 3 gal. 3 qt. 1 pt.</h2>

Step-by-step explanation:

1 gallon = 4 quarts

5 gallons 2 quarts 1 pint = 4 gallons 6 quarts 1 pint

(5 gallons 2 quarts 1 pint) - (1 gallon 3 quarts)

= (4 gallons 6 quarts 1 pint) - (1 gallon 3 quarts)

= 3 gallons 3 quarts 1 pint

7 0
3 years ago
Consider this equation: –3x – 5 2x = 6which is an equivalent equation after combining like terms?
Alla [95]
-3x-5+2x=6
2x-3x-5=6
-1x-5=6
-x-5=6
-x=11
x=11
an equivilent equaiton is x=11
7 0
3 years ago
(PLEASE HELP/NO SPAM) Which equation shows the function y=2^x translated 4 units left and 2 units down?
lianna [129]

Answer:

The answer is (h).

Step-by-step explanation:

When y = 2^x is shifted 4 units left, the x shifts 4 units to the left and x becomes (x+4). When the graph is shifted to units down, y has to be subtracted by 2.

The function becomes

y = 2^(x+4) -2.

Finally, you shift -2 to the same side as y.

This becomes

y+2 = 2^(x+4) which is (h)

5 0
3 years ago
Other questions:
  • Complete the pattern 0.02 , 0.2
    15·1 answer
  • Solve the following system of equation using gaussion<br>elimination method<br>x + 3y - 2z= 0​
    5·1 answer
  • You are choosing between two mugs. One has a base that is 5.5 inches in diameter and a height of 3 inches. The other has a base
    7·1 answer
  • the train station clock runs too fast and gain 7 Minutes every 4 days how many minutes and seconds will it have gained at the en
    14·1 answer
  • Anybody knows this one
    8·2 answers
  • Need help on 6 please
    9·2 answers
  • Which statement could be used to explain why the function h(x) = x3 has an inverse relation that is also a function? The graph o
    7·1 answer
  • An ant can run an inch per second. How long will it take the same ant to run a foot?​
    15·2 answers
  • pls help Using the pattern learned for the square of a binomial, square (3x-5y^2) Explain the pattern.
    14·1 answer
  • A box has 11 marbles, 3 of which are white and 8 of which are red. A sample of 4 marbles are selected randomly from the box with
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!