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Bond [772]
3 years ago
10

1) A chemist has 250 ml of a 5% acid solution. How much water should be added to this solution to reduce it to a 3% solution.

Mathematics
1 answer:
Firlakuza [10]3 years ago
3 0

Answer:

153.1ml

Step-by-step explanation:

We have 12.5ml of acid in the solution.

If we want this to be 3% then we can divide this value by 3 and times by 100 to get the total value.

416.6ml total solution amount

415.6-12.5-250=153.1

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Please help thank you asap
miss Akunina [59]
34 is the correct answer
3 0
3 years ago
What is the average rate of change of the function over the interval x = 0 to x = 8?
goblinko [34]

Answer:

-13/400

Step-by-step explanation:

The pertinent formula is

                             change in f(x) over [a, b]        f(8) - f(0)

a. r. of change = --------------------------------------- = ----------------

                              change in x over [a, b]               8 - 0

Continuing these calculations, we get:

                               2(8) - 2              2(0) - 2        14/8           -2/8

                     (1/8) -------------- - (1/8) ------------- = -----------  -  -----------

                                5(8) - 6              5(0) - 6       40 - 6           -6

                         

                                                                                7/4       1/4

This simplifies to    average rate of change =      ------- - --------

                                                                                  34         6

                                                                                    7                 1

                                                                          =   ------------- - ---------- = -13/400

                                                                                   136             24

8 0
3 years ago
What's slope Line<br> pass through( 14, 4)( 21, 6
Svet_ta [14]
What's slope Line
pass through( 14, 4)( 21, 6 Answer :m=2/7
5 0
3 years ago
In the figure below, KL=9 and JK=4. Find JL.
Drupady [299]

Answer:

JL → 13

Explanation:

JL → JK + KL

JL → 4 + 9

JL → 13

8 0
3 years ago
Read 2 more answers
Please look at the box
jenyasd209 [6]

Answer:

m = slope

(x_1, y_1) = coordinates of first point in the line

(x_2, y_2) = coordinates of second point in the line

6 0
3 years ago
Read 2 more answers
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