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
Nostrana [21]
3 years ago
6

in the lab, Tammy has two solutions thta contain alcohol and is mixing them with each other. She use twice as much Solution A as

Solution B. Solution A is 19% alcohol and Solution B is 14% alcohol. How many milliliters of Solution B does she use, if the resulting mixture has 104 milliliters of pure alcohol?
Mathematics
1 answer:
Dmitry_Shevchenko [17]3 years ago
4 0

Answer:

She uses 200 milliliters of solution B

Step-by-step explanation:

Notice that there are two unknowns in this problem: 1) the amount of solution A that is being used, and 2) the amount of solution B being used. We can name such unknowns with letters to facilitate our work:

Amount of solution A to be used = A

Amount of solution B to be used = B

So, since we need to find two unknowns, we need to create a system of two equations to solve them.

Our first equation can be obtained from the sentence: "She uses twice as much Solution A as Solution B," which written in mathematical form is:

A = 2 B

The second equation we can build from the information of the amount of alcohol in each solution that combined will add up to 104 milliliters of alcohol in the mixture. Knowing the percent of alcohol in each solution, we can write an equation for the amount of alcohol:

0.19 A + 0.14 B = 104

Now we can use our first equation to substitute A in terms of B in the second equation:

0.19 (2 B) + 0.14 B = 104

0.38 B + 0.14 B = 104

0.52 B = 104

B = 104 / 0.52

B = 200 milliliters

You might be interested in
If veronica reed is paid a gross weekly salary of $1036.00, what is her gross annual salary?
Ber [7]
So, (weekly) she receives 1036.00.
The question is asking to find out the (annual) salary which is a year.
There are about 52 weeks in a year.
To find the amount being payed annually we multiply 1036 by 52
=53,872.
3 0
3 years ago
I NEED THE ANSWER QUICK (find the distance between the man and the top of the tree)
JulijaS [17]

Answer:

The distance would be about 32 (31.62) feet.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
The shape above is made up of 2cm cubes loosely stacked in a comer of a
joja [24]

Answer:

If you count the bottom layers that cant be seen, then it's 16 cubes.

5 0
3 years ago
Read 2 more answers
Select all of the rational numbers from the list.
topjm [15]

Step-by-step explanation:

Rational numbers

7/8, square root of 25

6 0
2 years ago
if you save three pennies on January 1, six pennies on January 2, nine pennies on January 3, and continue this pattern for one y
Katarina [22]

Answer:

2003.85

Step-by-step explanation:

I realize I'm a year late, but the math of the previous answer was so terrible I'm honestly too horrified to let this be.

You have save by an increasing amount of 3 pennies per day. You start with 3 and build from that, each day, for 365 days. First, you must figure out what amount of pennies you shoved into your account on the final 365th day.

An= a1+(n-1)d

An=term you want

a1= term you begin with

n= term you want

d= constant amount

A_365= 3 + (365-1)*3

A_365= 1095

Arithmetic Sum: Sn = N/2 (a1 + an)

365/2 * (3 + 1095) = 200385.

This means you've invested a total of 200385 PENNIES after 365 days.

The question asks for dollars, not your rusting lincoln's.

As (I hope) you know, 1 Dollar = 100 pennies

200385 pennies/100 = 2003.85.

This means you have $2003.85 in your account by the conclusion of the 365th day.

4 0
3 years ago
Other questions:
  • An arrow is shot vertically upward at a rate of 240 feet per second from ground level. Use the projectile formula to determine w
    6·1 answer
  • If a b and c d which pair of angles are congruent
    12·1 answer
  • The value of x for which the expressions 3x – 4 and 2x + 1 become
    14·2 answers
  • What numbers add to 33 and muliplies to 75
    5·1 answer
  • Find the value of c that makes the trinomial a perfect square.
    15·2 answers
  • 2. Mrs. Adams wants to buy bags of candy to pass
    12·1 answer
  • A fish tank is 2 metres long, 50 centimetres wide and 20 centimetres high. How many litres of water will it hold if it is filled
    10·1 answer
  • PLEASE HELP DUE TODAY‼️‼️
    14·2 answers
  • 8)<br> This cone and sphere have equal volumes. Find the radius<br> Cone:32 radius<br> Height:27
    15·1 answer
  • A student bikes 1/4 miles to school. After school, the student bikes 1/3 miles to a cousin’s house. Finally, the student bikes 7
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!