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Rufina [12.5K]
3 years ago
6

The answer is B i took the test

Mathematics
2 answers:
marusya05 [52]3 years ago
8 0
Thanks for the points
KATRIN_1 [288]3 years ago
6 0

Ok

ur wasting ur points

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What is the answer and show your work plz
alexandr402 [8]

Answer:

C. Multiply both 2and 4 into it then you'll have the answer

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Which graph represents the inequality? 2x + y < 4
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I hope this helped you on your problem

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A chemist whishes to prepare 100 liters of 45% purity of sulphuric acid .He has two kinds of acid solutions in stock ,one is 55%
tester [92]

Answer:

the chemist should use 60 liters of 55% solution and 40  litres of 30% solution in order to prepare 100 liters of 45% purity of sulphuric acid.

Step-by-step explanation:

From the given information,

Let x be the litres of 55% pure solution

Let y be the litres of 30% pure solution

Also;

Given that our total volume of solution is  100 litres

x+y =100  ---- (1)

The total solution of pure by related by the sum of the individual pure concentrations to make up the concentration of final solution.

(0.55)(x)+(0.30)(y) = 0.45(100) ---- (2)

From equation (1)

Let ; y = 100 - x

Replacing the value for y = 100 - x into equation (2)

(0.55)(x)+(0.30)(100-x) = 0.45(100)

0.55x + 30 - 0.30x = 45

0.55x - 0.30x = 45 - 30

0.25x = 15

x = 15/0.25

x = 60 liters of 55% solution

From ; y = 100 - x

y = 100 - 60

y = 40  litres of 30% solution.

Therefore, the chemist should use 60 liters of 55% solution and 40  litres of 30% solution in order to prepare 100 liters of 45% purity of sulphuric acid.

7 0
3 years ago
Find the value of x.<br><br> A. 6.6<br><br> B. 5.5<br><br> C. 8.8<br><br> D. 1.1
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Answer:

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Step-by-step explanation:

the answer is D because the

5 0
2 years ago
3/5 + 7/8 + 3/10<br> please help
ElenaW [278]

Answer:

soln,

3/5+7/8+3/10

3×8/5×8+7×5/8×5+3×4/10×4

24/40+35/40+12/40

24+35+12/40

71/40

4 0
3 years ago
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