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elixir [45]
2 years ago
7

What amount of pure acid must be added to 600 mL of a 20% acid solution to produce a 75% acid solution?

Mathematics
1 answer:
jarptica [38.1K]2 years ago
6 0
You must add another 600ml acid. Good luck and pls mark as brainliest if I helped
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Bethany opened a store credit card to purchase a TV for $589. She put the entire purchase on the credit card. Her APR is 29.99%
7nadin3 [17]
Original debt = $589
APR = 29.99%
The monthly rate is 0.2999/12 = 0.02499

After 1 month:
Amount owed = 589*1.02499 = $603.72
5% payment = 0.05*603.72 = $30.187
New balance = $603.72 - 30.187 = $573.53

After 2 months:
Amount owed = 573.53*1.02499 = $587.87
5% payment = 0.05*587.87 = $29.39
New balance = 587.87 - 29.39 = $558.48

After 3 months:
Amount owed = 558.48*1.02499 = $572.44
5% payment = 0.05*572.44 = $28.62
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Answer: $543.82

4 0
3 years ago
The sim of five times a number and four is equal to negative seven what is the number
bonufazy [111]
5x+4=-7 so 5x=-7-4, 5x=-11, x=-11/5
8 0
3 years ago
How do i do this i'm really confused it's nothing i've done before
laila [671]
What is the question pls so I might be able to help
6 0
3 years ago
A scientist listed the volumes, in milliliters, of some liquids used in an experiment.
Aloiza [94]

Answer:

B) 1.078 < 1.23  (T)

Step-by-step explanation:

A) 1.23 < 1.203  (F)

B) 1.078 < 1.23  (T)

C) 1.17 > 1.203  (F)

D) 1.078 > 1.17 (F)

4 0
3 years ago
Read 2 more answers
I need fast help with step by step<br> <img src="https://tex.z-dn.net/?f=%5Cint%5Climits%5E2_1%20%7B%5Cfrac%7B3x-1%7D%7Bx%2B1%7D
Ganezh [65]

Answer:

1.38 to the nearest hundredth.

Step-by-step explanation:

Dividing:

x + 1 ) 3x - 1 ( 3            

          3x + 3

                -4

so (3x - 1) / (x + 1) =  3  - 4 / x+ 1

Integral  of (3  - 4 / x+1 )  = 3x - 4 ln(x + 1)

Between  limits of 1 and 2 we have:

(3(2) - 4 ln 3) - (3 - 4 ln2)

=  1.6056 - 0.2274

= 1.3782.

5 0
4 years ago
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