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Lunna [17]
3 years ago
5

K/4 -5 =23 what does k equal

Mathematics
1 answer:
baherus [9]3 years ago
5 0

Answer:

I think the answer 22.

Step-by-step explanation:

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Which graph represents the solution set of and ?
Anit [1.1K]

Answer:

<h2>GRAPH III</h2>

Step-by-step explanation:

Look at the picture.

We have

y = x² - 4 → move the graph of x² 4 units down (the vertex is (0, -4))

x + y + 2 = 0   <em>subtracy x and 2 from both sides</em>

y = -x - 2 → move the graph of -x 2 units down (the y-intercept os -2)

Only graph III and IV meets these conditions.

The solution is the points of intersection of the graphs.

Therefore your answer is GRAPH III

<em />

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3 years ago
Karl ran 4 blocks in 15 minutes. He then ran 1 more block. What is a reasonable value for the amount of time it took him to run
irakobra [83]
The reasonable amount of time it would take for him to run all five blocks is 19 minutes
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3 years ago
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A scientist need 10 L of a 20% acid solution for an experiment where she had only a 5% solution and a 40% solution to the neares
andrezito [222]

Answer:

Amount of 5% solution = 5.7 Litres

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Step-by-step explanation:

First, of all, let x be the amount of 5% solution used

Since, the scientist needs 10 L of solution, then;

Let 10 - x be the amount of 40% solution used

Now, we are told that she needs 10 L of a 20% acid solution.

This means that;

5%x + 40%(10 - x) = 20%(10).

Simplifying this gives;

0.05x + 0.40(10 - x) = 0.20 × 10

Expanding the bracket gives;

0.05x + 4 - 0.4x = 2

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0.35x = 2

x = 2/0.35

x ≈ 5.7 litres

Thus, she will need to mix 5.7 liters of the 5% solution.

Since 10 - x be the amount of 40% solution used , then;

the amount of 40% solution = 10 - 5.7 = 4.3 litres

4 0
4 years ago
I NEED help with this please!!
Yakvenalex [24]

Answer:Line E

Step-by-step explanation:

The equation is in the form of y=mx+b. M stands for slope and b is y-intercept. The y intercept is 4 and the only one with a positive y intercept is Line E. To check our answer we can see that the slope is positive which means the line is ascending(eliminating line t) and is greater than 1 which means that it is steeper than the line y=x(eliminating line p)

6 0
3 years ago
What is the value of 1x2 + 2, when x = 3?
diamong [38]
I got 8 for the answers
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