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Igoryamba
3 years ago
15

62. A chemist mixes 15 liters of 40 percent acid solution and 25 liters of 20 percent acid solution.

Mathematics
1 answer:
Rzqust [24]3 years ago
7 0

40% of 15 L = 6 L of acid

20% of 25 L = 5 L of acid

This means the mixture contains a total of 11 L of acid, and with a total volume of 15 L + 25 L = 40 L, that means the mixture is at a concentration of

(11 L acid) / (40 L solution) = 0.275 = 27.5%

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Determine if y=5/4x +1 and y=5/4x-7 are parallel, perpendicular, or neither
GalinKa [24]

Answer:

they are parallel

Step-by-step explanation:

they have the same slope

5 0
3 years ago
I need help with this please
Oksanka [162]

Answer:

Step-by-step explanation:

Ok so this is simple

6+7+0=13

3 will be in the ones column and the one would be carried over in the tens column so it would be

1+8+4+7=20

again 0 will be in the tens column and 2 would be carried over in the hundreds column so

2+5+0+6=12

2 in the hundreds column and 1 carried over in the thousands column

1+9+1+7=18

8 in the thousands column and over carried over in the ten thousands column

1+3+4+5=13

13 would be written in the ten thousands column as it is the last one

The total would be

138303

Hope this helps :)

8 0
4 years ago
One end of a ladder 32 feet long is placed 10 feet from the outer wall of a building that stands on the ground level. How far up
ladessa [460]

Answer:

30 ft

Step-by-step explanation:

This is a classic right triangle problem, where the length of the ladder represents the hypotenuse, where the ladder is lengthwise from the building is the base of the triangle, and what we are looking for is the height of the triangle.  Pythagorean's Theorem will help us find this length.

32^2-10^2=y^2 so

1024 - 100 = y^2 and

y = 30.4 so 30 feet

4 0
3 years ago
And our teacher has a box of 100 markers the teacher gives out silver markers to each student in the class and has 16 markers le
Elza [17]

Answer:

84 students

Step-by-step explanation:

100 - 16 = 84

4 0
3 years ago
The length of a car is √185 ft. Will this car fit in a garage that measure 10 ft long? If not that is the minimum length of a ga
Rina8888 [55]
10 is the square root of only 100, so I know that the square root of 185 must be longer.

The square root of 185 is about 13.6 , so the garage must be absolutely
not any shorter than 14-ft, and 15-ft or 16-ft would be even better.
4 0
3 years ago
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