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
horsena [70]
3 years ago
12

Write the following as an expression: How much water do I need to add to l liters of pure alcohol to obtain a solution of 45% al

cohol? The answer is an EXPRESSION, not an actual answer!! WILL MARK BRAINLIST!!!
Mathematics
1 answer:
vredina [299]3 years ago
3 0

Answer:

see below

Step-by-step explanation:

amount of water w

l liter of pure alcohol = 100% alcohol

solution is 45 % percent alcohol

total amount of fluid is w+l

(w+l)( .45) = l*.100

Distribute

.45w  + .45 l = 1l

.45 w = 1l - .45l

.45 w = .55l

w = .55l / .45

w =11/9 l

You might be interested in
Suppose it takes you 14 hour to drive to the movie theater at a rate of 40 mph. Your friend lives closer to the movie theater th
dezoksy [38]

Answer: (d)

Step-by-step explanation:

Given

It takes 14 hours with 40 mph to reach the theatre

so, the distance traveled is given by

\Rightarrow d_1=40\times 14\\\Rightarrow d_1=560\ \text{miles}

It is given that d is the distance from theatre to friend's house

So, d must be less than d_1 i.e.

d

So, the most appropriate option out of the given is option (d) as d must be less than 560 and it is possible that it maybe less than 160.

7 0
3 years ago
What % of 60 is 35?
STatiana [176]

Answer:

58.33%

Step-by-step explanation:

  is            %

--------  =  ---------

  of           100

Just plug in the numbers based on what it tells you.

What % = goes in the % spot

of 60 = goes in the of spot

is 35 = goes in the is spot

  35          x

--------- = ---------

  60         100

Cross multiply:

60 * x = 60x        35 * 100 = 3500

60x = 3500

Divide by 60 to get x by itself.

3500 / 60 = 58.33

Put the percent sign after it:

58.33%

I hope this helps.

8 0
3 years ago
Read 2 more answers
The package shown is shaped like a right rectangular prism. Every side of the package will be covered with gift wrap, except the
Alexxandr [17]
<span> three-dimensional figure has length, width, and height. A face is a flat </span>side<span>. A vertex is .... Describe the faces edges and vertices of </span>each<span> three dimensional ... Vera's closet is </span>in the shape of<span> a </span>rectangular prism<span>. ... You </span>can<span> draw different views of three-dimensional figures. .... How </span>many square<span> millimeters of</span>wrapping paper<span>.</span>he amount of wrapping paper needed<span> to </span>cover<span> the figure represents its surface area. To find the surface area, you calculate the area of </span>each<span> face or </span>side<span> ... where SA = surface area, </span>l<span> = length, </span>w<span> = width, and </span>h<span> = height. ... the surface area of this </span>prism<span> is 158 </span>square inches<span>.  

</span>
6 0
3 years ago
Please help me with this question!!
KonstantinChe [14]

Answer:

y=8(0.5)^x

Step-by-step explanation:

We can find the value of b, which is the rate. The rate is 0.5 because the y value is consistently going down by 2. A is the first value, which is 8. y=8(0.5)^x

3 0
3 years ago
A truck company charged $40 for one day truck rental +0.85 per mile formulate a linear equation to model the cost c(d) Of one da
liubo4ka [24]

For this case we have to:

d: Let the variable representing the number of miles traveled per day

Then, the cost will be given by the following equation:

C (d) = 0.85d + 40

If we have the cost C (d) = 91, then the number of miles traveled is:

91 = 0.85d + 40\\91-40 = 0.85d\\51 = 0.85d\\d = \frac {51} {0.85}\\d = 60

Thus, the number of miles traveled is 60.

Answer:

C (d) = 0.85d + 40

For a C (d) = 91, the number of miles traveled is 60

3 0
3 years ago
Read 2 more answers
Other questions:
  • The perimeter of the rectangle is 32 m One side is 11m space, m long. What is the length of the missing side?
    15·1 answer
  • What is 2tens 1one × 10 in a unit form
    6·1 answer
  • What is the regular price of a pair of socks paid $76.92 sale price 20% off
    12·2 answers
  • 67.901 + 4.2
    11·2 answers
  • The sum of a number and two times a smaller number is 62. Three times the bigger number exceeds the smaller number by 116. The b
    7·1 answer
  • Enter the number in scientific notation.<br> 4,470,000 =
    5·2 answers
  • What's the perimeter of the rectangle shown below
    8·1 answer
  • Jamaal is traveling 20 miles an hour slower than Micah. Micah is traveling n miles an hour. Write an expression to describe how
    11·2 answers
  • What is the product of the polynomials below?
    11·1 answer
  • Find the value of x. A = x B = x + 12 C = x - 9
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!