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inn [45]
3 years ago
12

If you study hard, then you can pass the tests.

Mathematics
1 answer:
galina1969 [7]3 years ago
3 0
I think we all know it's A XD
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Solve for x: 2(10-2x) = 4(3x + 1). Write your answer as a fraction.
qwelly [4]

Answer:

\boxed{x=1}

Step-by-step explanation:

2(10-2x) = 4(3x + 1)

\sf Expand \ brackets.

20 - 4x = 12x + 4

\sf Subtract \ 12x \ and \ 20 \ from \ both \ sides.

20 - 4x - 12x - 20 = 12x + 4 - 12x - 20

-16x = -16

\sf Divide \ both \ sides \ by \ -16.

\displaystyle \frac{-16x}{-16} =\frac{-16}{-16}

x=1

4 0
3 years ago
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In four years, 40% of a radioactive element decays. Find its half-life. Round to one decimal place.
White raven [17]

To find the answer, use k = \frac{2.303 }{ 4} (log\frac {100 }{ 40}) , and then use the equation t=\frac{.693}{k} To find it's half life.

5 0
3 years ago
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Pls help with this question
andre [41]

Answer:

x<56

Step-by-step explanation:

Since the dot over 56 isn't filled in, the inequality doesn't include 56 (so we'll use < or > not \leq or \geq)

Now, let's look at the direction of the shading: is it going to the left of 56 or to the right?

This shading is to the left of 56, which indicates that it's all of the numbers less than 56.

As said above, the inequality doesn't include 56

therefore, it will be x<56 (x is less than 56, and 56 is not included)

hope this helps!

3 0
3 years ago
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Do anybody know geometry?
choli [55]

Answer:

D. 29

Step-by-step explanation:

180 - 151 = 29

6 0
3 years ago
What are the median mode and range of the data set 16,17,17,17,19,21,23,24
Sav [38]
Mode 17,
Mean is 19.3
Median 18.
3 0
3 years ago
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