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KatRina [158]
3 years ago
6

For each pair of mathematical expressions, determine if the expressions have equal values. Select each pair of expressions that

came out to be equal.
Please note, not all pairs will come out to the same value. We want you to determine if the expressions in each answer option have the have the same value.

Question options:

36÷3+3 and 22+2
36
÷
3
+
3

a
n
d

2
2
+
2

−(23)2and 49
-
(
2
3
)
a
n
d

4
9

8(−9) and −12−60
8
(
-
9
)

a
n
d

-
12
-
60

1+24 and 1−14
Mathematics
1 answer:
barxatty [35]3 years ago
4 0
This doesn’t make sense you can really see the options
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Which of the following is(are) the solution(s( to |5x+2|=8?
larisa [96]

Answer:

Step-by-step explanation:

Given that

|5x+2|=8

Note that

|x|=x for ×>0

|x|=-x for ×<0.

So, for the first case

|5x+2|=8

5x+2=8

5x=8-2

5x=6

x=6/5

Also, the second aspect.

|5x+2|=8

-(5x+2)=8

Divide both side by -

5x+2=-8

5x=-8-2

5x=-10

x=-10/2

x=-5

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damaskus [11]

Answer:

Option C is correct

Step-by-step explanation:

8 + 8 + 8 + 8 + 8 + 8 = 48

6 \times 8 = 48

<h3>Hope it is helpful...</h3>
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Answer:

75

Step-by-step explanation:

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3 years ago
'Polonium-210 is a radioactive substance with a half-life of 138 days. If a nuclear
Tatiana [17]

Answer:

  • <u>59.0891 g (rounded to 4 decimal places)</u>

Explanation:

<em>Half-life time</em> of a radioactive substance is the time for half of the substance to decay.

Thus, the amount of the radioactive substance that remains after a number n of half-lives is given by:

  • A=A_0\cdot (1/2)^n

Where:

  • A is the amount that remains of the substance after n half-lives have elapses, and
  • A₀ is the starting amount of the substance.

In this problem, you have that the half-live for your sample (polonium-210) is 138 days and the number of days elapsed is 330 days. Thus, the number of half-lives elapsed is:

  • 330 days / 138 days = 2.3913

Therefore, the amount of polonium-210 that will be left in 330 days is:

  • A=310{g}\cdot (1/2)^{2.3913}=59.0891g
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3 years ago
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