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lyudmila [28]
3 years ago
11

34% of 149? Solve and explain. Thanks!

Mathematics
1 answer:
lilavasa [31]3 years ago
4 0
58.11 i got that answer by dividing 39 by 149
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Suppose a chemist combines a 25% acid solution and a 50% acid solution to make 40 L of 45% acid solution. How many liters of eac
lesantik [10]

Answer:

The number of liters for :

Acid solution a = x = 8 liters

Acid solution b = y = 32 liters

Step-by-step explanation:

Let us represent:

The number of liters for :

Acid solution a = x

Acid solution b = y

Suppose a chemist combines a 25% acid solution and a 50% acid solution to make 40 L of 45% acid solution.

x + y = 40 ...... Equation 1

x = 40 - y

25% × x + 50% × y = 45% × 40

0.25x + 0.5y = 18...... Equation 2

We substitute, 40 - y for x in Equation 2

0.25(40 - y)+ 0.5y = 18

10 - 0.25y + 0.5y = 18

- 0.25y + 0.5y = 18 - 10

0.25y = 8

y = 8/0.25

y = 32 Liters

Solving for x

x = 40 - y

x = 40 - 32

x = 8 Liters.

Hence:

The number of liters for :

Acid solution a = x = 8 liters

Acid solution b = y = 32 liters

5 0
3 years ago
7) f = c +32 (solve for c)<br> i need help it’s due tomorrow please
kvv77 [185]
F=c+32
this is a plug in formula, therefore to find fahrenheit you take the celsius and add 32 to get your fahrenheit answer.
8 0
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Which equation has exactly one solution?
ycow [4]
Your answer would be 4x-7=-3(3+4x) because it only has one solution which is x= -1/8
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PLS HELP ME
lianna [129]

Answer: Percentage increase: 57%

Percent increase if the airline charges an additional 50:  14.5% or 15%

Depends if your teacher wants more accurate results with the decimal, or rounded up with 15.

Step-by-step explanation:

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2 years ago
TanA+tan(60+A)+tan(120-A)=3tan3A​
Volgvan

Answer: not and identity

Step-by-step explanation:

3 0
2 years ago
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