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jeyben [28]
3 years ago
9

Which equation best represents the graph

Mathematics
1 answer:
stepan [7]3 years ago
5 0
It is the second one.

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$12 for 15 milliliters $8 for 10 milliliters yes or no
vichka [17]

Answer:

The correct answer is A. 167 milliliters of 7% solution and 333 milliliters of 4% solution and here is how:

If x is the number of milliliters of the 7% saline solution and y is the number of milliliters of the 4% saline solution then add up to 500 milliliters total, so x + y = 500.

and if we do

x + y = 500

x = 500 - y

0.07x + 0.04y = 25 (substitute 500 - y for x)

0.07(500 - y) + 0.04y = 25

35 - 0.07y + 0.04y = 25

-0.03y + 35 = 25

-0.03y = -10

y = 333.333...

y = about 333

x = 500 - y = 500 - 333 = 167

Then you know why the answer is A.

Step-by-step explanation:

8 0
3 years ago
20. Solve for x when 18x = 2/3 Provide your answer as a fraction. please do not do website​
serious [3.7K]
18x/18 = 2/3 • 18
Flip reciprocal of 18 which is 1/18 so it would be 2/3 • 1/18 the 2 and 18 can be simplified when cross multiples so it would then be 1/3 • 1/9 which is x=1/27
3 0
3 years ago
Is the formula s=(n-2)180
Phantasy [73]

Answer:

Number of sides of the polygon

Step-by-step explanation:

The formula S=(n-2)180 is the sum of the measures of interior angles. So that's what S stands for. The only other variable remaining is n which is the number of sides of the polygon.

There's nothing I can do to help you understand this, you just have to memorize it.

5 0
3 years ago
Find the missing number in the pattern below 14,21, ,35,42
earnstyle [38]

Answer:

28

Step-by-step explanation:

........

7×2

7×3

<em>7×4</em>

7×5

7×6

7 0
3 years ago
Read 2 more answers
If n = 3, what is 7n + 9?<br> simpify
natali 33 [55]
The answer would be 30
7 0
3 years ago
Read 2 more answers
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