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Veronika [31]
3 years ago
13

A machine packs boxes at a constant rate of 3/2 a box every 2/1 minute what is the number of boxes per minute that the machine p

acks
Mathematics
1 answer:
Lisa [10]3 years ago
4 0

try dividing 2/3 by 1/2 idk if u can get any of those ansewrs

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Rajan needs 1 liter of 15% hydrochloric acid solution for an experiment. He checks his storage cabinet, but he only has a 5-lite
yarga [219]

Answer:

<em>Rajan must use </em><em>0.75</em><em> liters of 5% hydrochloric acid solution and </em><em>0.25</em><em> liters of 45% hydrochloric acid solution.</em>

Step-by-step explanation:

Let us assume that, x liters of the 5% hydrochloric acid and y liters of the 45% hydrochloric acid solutions are combined.

As Rajan need total of 1 liter of solution, so

x+y=1

i.e x=1-y --------------------1

As Rajan needs 5% hydrochloric acid and 45% hydrochloric acid to make a 1 liter batch of 15% hydrochloric acid, hence acid content of the mixture of two acids will be same as of the final one, so

0.05x+0.45y=1\times 0.15

i.e 5x+45y=15 -------------2

Putting value of x from equation 1 in equation 2,

\Rightarrow 5(1-y)+45y=15

\Rightarrow 5-5y+45y=15

\Rightarrow 5+40y=15

\Rightarrow 40y=15-5=10

\Rightarrow y=0.25

Putting the value of y in equation 1,

x=1-0.25=0.75

Therefore, Rajan must use 0.75 liters of 5% hydrochloric acid solution and 0.25 liters of 45% hydrochloric acid solution.

5 0
3 years ago
Maria had a beautiful baby last
iogann1982 [59]

Answer:

srry i need more points

Step-by-step explanation:

<h2>ok dont mean to bother u</h2>
7 0
3 years ago
HELP PLEASE
Alex Ar [27]
Answer: 1/5 x = 10 * 1/5. 1/5x = 2. x = 2*5 = 10

7 0
3 years ago
Read 2 more answers
Complete the table... plz help ​
ICE Princess25 [194]

Answer:

3=20

4=15

5=12

Step-by-step explanation:

4 0
3 years ago
If y=32, then 86y+25−78y =
FrozenT [24]

Answer:

281

Step-by-step explanation:

plug y value into expression

86(32) + 25 - 78(32)

pemdas says we must multiply first

2752 + 25 - 2496

2777 - 2496

281

4 0
3 years ago
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