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4 years ago

Please so your work! 20pts and bainlyist for best answer! an = 2n + 11

Mathematics

1 answer:

miv72 [106K]4 years ago

5 0

Step-by-step explanation:

What's the value for a? This cannot be solved unless 'a' or 'n' is given

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Two solutions of differently concentrations of acid are mixed creating 40 mL of a soul union that is 32% acid one-quarter of the

AleksAgata [21]

Answer: Three quarters (30 ml) is made up of a 36% acid solution.

Step-by-step explanation:

Since we have given that

Total amount of solution = 40 ml

One- quarter of the solution is given by

$\frac{1}{4}\times 40\ ml\\\\=10\ ml$

Three-quarter of the solution is given by

$\frac{3}{4}\times 40\\\\=30\ ml$

According to question, we have

10 ml of solution is made up of = 20% of acid solution

30 ml of solution is made up of = say<em> 'c </em>' of acid solution

40 ml of solution is made up of = 32 % of acid solution

So, our equation becomes,

$10\times 0.2+30\times c=40\times 0.32\\\\2+30c=12.8\\\\30c=12.8-2\\\\30c=10.8\\\\c=\frac{10.8}{30}\\\\c=0.36\\\\c=36\%$

Hence, three quarters (30 ml) is made up of a 36% acid solution.

5 0

3 years ago

A scale drawing of a school bus has a scale of 1/2 inch to 5 feet. If the length of the school bus is 4 1/2 inches on the scale

tester [92]

45 feet. 4 x 10 =40 then add the other half an inch to get the total of 45 feet or you could say 9 x 5= 45

6 0

3 years ago

How to answer a^3-216

marshall27 [118]

Are you asking to factor it? if so, the answer is (x-6)(x^2+6x+36)

8 0

3 years ago

It costs $50 to rent a car plus $3.00 per gallon of gas in the car. Sue can spend at most $86.00 total, so what's the most amoun

PilotLPTM [1.2K]

Answer:

i just know you can have 12 gallons of gas

Step-by-step explanation:

because it is 3x2=6

3x10=30 which means 10+2=12

4 0

4 years ago

Math: Recursive Formula

olga55 [171]

Answer:

-10+12=2;+2

Step-by-step explanation:

4 0

3 years ago